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WO2001066311A1 - Hand tool with handles hinged by pivot joints - Google Patents

Hand tool with handles hinged by pivot joints Download PDF

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Publication number
WO2001066311A1
WO2001066311A1 PCT/MX2001/000005 MX0100005W WO0166311A1 WO 2001066311 A1 WO2001066311 A1 WO 2001066311A1 MX 0100005 W MX0100005 W MX 0100005W WO 0166311 A1 WO0166311 A1 WO 0166311A1
Authority
WO
WIPO (PCT)
Prior art keywords
hand tool
jaw
workpiece
lever
members
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/MX2001/000005
Other languages
Spanish (es)
French (fr)
Inventor
Alberto Domenge Murua
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AU2001236173A priority Critical patent/AU2001236173A1/en
Publication of WO2001066311A1 publication Critical patent/WO2001066311A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/22—Pliers provided with auxiliary tool elements, e.g. cutting edges, nail extractors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/02—Jaws
    • B25B7/04—Jaws adjustable
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/06—Joints
    • B25B7/10—Joints with adjustable fulcrum
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears

Definitions

  • the invention relates to hand tools articulated with pivots, for holding, holding or cutting work pieces that have 10. various configurations.
  • an articulated pivot work tool that has at least one pivotable jaw to engage with any work piece within a range of different sizes, for example nuts or bolts.
  • Pivoting jaws have surfaces
  • the handles include a pivotable and adjustable connection to allow the hand tool to be coupled to a plurality of fasteners of different sizes.
  • the flat surfaces of the jaws do not allow a
  • the jaws are coupled only to square or rectangular work pieces and that cover everything • to the perimeter of these pieces or the entire perimeter of the arrangement of a plurality of rectangular pieces that one wishes to hold together. It is clear that the usable self-adjusting jaws of Kalkbrenner et al. They are not designed to engage with threaded fastener heads to apply a rotational force or torque on them.
  • This invention resolves the shortcomings of the prior art in relation to the jaw capacity of a hand tool having pivoted handles to maintain sufficient contact with a multi-sided workpiece, for example a hexagonal fastener, such as a nut. or a bolt, when a rotational force or torque is applied.
  • a multi-sided workpiece for example a hexagonal fastener, such as a nut. or a bolt
  • a hand tool incorporating the pivotable jaws and self-adjusting jaws of this invention produces a better coupling to workpieces with multiple sides, such as hexagonal fasteners, providing couplings on four sides of the fastener with the jaw surfaces.
  • this invention resolves the shortcomings of the typical prior art hand tools that use lever linkage action, providing the jaws that are interconnected by pivots, cutting surfaces that facilitate the clamping and cutting of the work pieces and providing a pair of jaw members interconnected pivotally on elongated members to increase the efficiency of the drive made of them.
  • the hand tool is provided with at least two elongated members interconnected by means of pivots, in a pivot joint, to provide a pair of handles and a pair of jaw support members .
  • Each jaw support member includes a usable self-adjusting jaw pivotally connected thereto and each usable self-adjusting jaw is configured to have an angular shape, whereby the operation of the handle causes the coupling to a multi-sided workpiece by means of the angularly shaped jaws, which allows the firm coupling of a workpiece, to impart a rotational force or torque to it.
  • Each angle-shaped jaw can be configured to fit on two sides of a hexagonal fastener and the pivot joint can be configured as a joint with mobile joint.
  • the movable joint may include a groove formed in at least one of the elongated members and the groove includes at least two adjustment notches.
  • the pin On the other side of the elongated members is a pin to pivotally interconnect the elongated members, the pin is movable within the groove and can pass from one adjustment notch to the other, thus allowing adjustment of the jaw spacing for adapt it to different sizes of bras.
  • the groove is provided with more than two adjustment notches to allow greater adjustment capacity in the hand tool.
  • the hand tool is configured to have a second 'slot on the other of the elongate members, the second groove has at least two notches adjustment.
  • the pin for interconnecting the elongated members is rotatably mounted and is configured to have a D-shaped cross section, whereby the pin can rotate to align the flat side of the D-shape with a longitudinal dimension of each of the grooves, in order to allow sliding movement between the two elongated members and provide adjustment and location of the curved side of the pin within the respective notches, in order to avoid the relative pivoting movement of the elongated handles and allow the operation of the hand tool.
  • a head can be provided and at the other end a knurled knob to facilitate rotation of the pin to a desired position.
  • more than two adjustment notches can be provided in each of the slots to allow greater adjustment of the hand tool.
  • the pivot articulated hand tool can also include a self-adjusting jaw, angled, pivotally mounted to each of the elongate members, for coupling with a multi-sided workpiece and, in particular, Each self-adjusting and angled jaw can be configured to couple two adjacent sides of a hexagonal fastener.
  • a hand tool of the lever linkage type, which includes: interconnected elements by pivots, which have coupling members to the workpiece and a pair of handles, each of them functionally connected to one of the respective elements interconnected by pivots, and a lever linkage connected functionally between the handles.
  • each of the coupling members to the workpiece includes a usable self-locking jaw that is pivotally connected thereto and each jaw is configured to have an angled shape and be able to engage with the two adjacent sides of a hexagonal fastener.
  • a hand tool, lever linkage type which includes :: elements interconnected by pivots, having coupling members to the workpiece, a pair of handles, each of them functionally connected to the respective interconnected elements, and a lever linkage functionally connected between the handles.
  • each of the workpiece coupling members is configured to have a cutting surface and the cutting surfaces can be configured as straight knives or can be configured as cutting surfaces curved to facilitate the cutting of circular members.
  • a hand tool of the lever linkage type, which includes: first and second elongate elements, a pair of coupling members to the workpiece connected by pivots to the first elongated member, while the second elongate member forms a handle pivotally connected to one of the coupling members of the workpiece.
  • a first lever linkage is functionally interconnected between the first and second elongate elements and a drive mechanism for the other of the coupling members to the workpiece. Therefore, the manipulation of the handle and the operation of the drive mechanism cause the coupling members to the workpiece to move forward and away from each other, to facilitate coupling with the workpiece.
  • the drive mechanism can
  • Each Workpiece coupling member may include a self-adjusting jaw connected by pivots thereto, and each of the jaws may be configured to have an angular shape and be able to engage with two adjacent sides of a hexagonal fastener.
  • the workpiece coupling members may have serrated segments to provide a firm hold of the workpieces with which it is coupled.
  • the drive mechanism may include a third elongate element that forms a second handle pivotally connected to the other coupling member to the workpiece, and a second lever rod may be functionally connected between the first and second elongate elements.
  • the first and second lever rods can each be connected to a first end of the respective second and third elongate elements and each can be connected to a second end of the first elongated member for movement longitudinal and pivot with respect to it.
  • the first elongate element can be formed with a pair of complementary, separate curved plates, which form an elongated passage where the second ends of the lever rods move pivotally and longitudinally.
  • the second ends of the lever rods may each be provided, with two hemispherical members on opposite sides thereof, to allow pivotal and longitudinal movement within the passage.
  • the lever linkage hand tool can also include an adjustment member in the first elongate element to provide the coupling of the second ends of the lever rods, thus providing adjustment capacity to the coupling members to the work piece.
  • the adjusting member may be formed as a screw thread member, threadedly coupled with an outer end of the first elongate member and an end of the screw thread member may be coupled to the second ends of the lever rods, to provide adjustability.
  • the second ends of the lever rods may be interconnected by pivots and the two hemispherical members may be provided. on opposite sides of the second ends of the lever rods, to allow pivotal and longitudinal movement within the passage.
  • an adjustment member can be provided in the first element, so that it is coupled by the second ends of the lever rods and provides adjustment capacity to the coupling members of the workpiece;
  • the adjusting member may be formed as a screw thread member and threadedly engage with an outer end of the first element and one end of the screw thread member engages with the second ends of the lever rods.
  • a hand tool of the lever linkage type can be formed, so that the second and third elongated elements are longer than an outer end of the first elongate element and extend beyond it, in order to increase the leverage of the work tool and allow its operation with two hands, in order to eliminate the need for a release lever for the locking mechanism.
  • Each coupling member of the workpiece may include a self-adjusting jaw that is pivotally connected thereto, each jaw may be configured to have an angular shape that engages with two sides of a hexagonal bra.
  • each of the coupling members to the workpiece may be configured with a cutting surface. The cutting surfaces may be configured as straight blades or as curved cutting surfaces.
  • each coupling member to the workpiece can have an arcuate configuration and several teeth oriented towards the internal arcuate surfaces of the coupling members to the workpiece can be provided, in order to facilitate the clamping of a work piece that has a generally circular outer surface.
  • Figure 1 is a perspective view of a self-adjusting jaw used in accordance with the present invention
  • Figure 2 is a side elevation view of a first embodiment of the tool hand according to the present invention, which has a mobile joint
  • Figure 3 is a side elevation view of a second embodiment of the hand tool according to the present invention, which has a movable joint
  • Figure 4 shows the hand tool of the embodiment of Figure 3, with the handles separated for clarity
  • Figures 5 and 6 show a side elevation view and a cross-sectional view, respectively, of the connecting pin used in the modes of Figures 3 and 4
  • Figure 7 is a side elevation view of the embodiment of Figure 4 showing an adjusted position of the pivotally moved handles
  • Figure 8 is a side elevation view of the embodiment of Figure 3, showing a different adjusted arrangement of the pivotally moved handles
  • Figure 9 is a side elevation view of a lever linkage type hand tool according
  • a first embodiment of the hand tool according to the present invention is illustrated, in the form of movable clamps 8.
  • the clamps 8 are formed with a first elongated member that includes a right handle 9, a plate-like body 10 and a left jaw 12.
  • a second elongated member includes a left handle 17, a plate-like body (no number) and a right jaw 18.
  • the left and right jaws 12, 18 are displaced with with respect to the plate-shaped bodies, to which they are connected in portions 14, 19 respectively, in order to allow the outer ends of the jaws to be directly opposite each other.
  • the plate-shaped body portions are pivotally interconnected by a movable joint that is provided by adjusting the notches 11 formed in the plate body 10 and a pin or bolt 23, connected to the plate body of the other elongate member, and the pin or bolt 23 se extends through the adjustment notches 11 in a conventional manner, to allow adjustment in two positions of the movable clamps.
  • a self-adjusting jaw 16 on the left side is pivotally mounted by an articulation pin 15 to the outer end of the left jaw 12, and a self-adjusting jaw on the right side 21 is pivotally mounted by the articulation bolt 22 to the right jaw 18.
  • the left jaw 12 is configured to provide a recess 13 to accommodate the pivotal movement of the adjustment jaw 16 on the left side and the right jaw 18 is configured to provide a recess 20 to accommodate the pivotal movement of the self-adjusting jaw 21 on the right side.
  • a self-adjusting jaw 1 which is representative of the self-adjusting jaws used in this exposure, is illustrated in Figure 1.
  • Each self-adjusting jaw 1 includes two angularly divergent side portions 2, 3 extending at an angle of approximately 120 ° and intersecting at a vertex 4.
  • the angular relationship of the lateral portions 2, 3 is configured so that the two lateral portions 2, 3 fully engage along two adjacent sides of a bolt or nut head hexagonal 24, as seen in Figure 2.
  • the opposing self-adjusting jaws, on the right side and on the left side, 16, 21 are essentially opposite each other and are self-adjusting around the respective pivot pins 15, 22, to closely engage opposite sides of the nut or bolt head 24 as shown in Figure 2, to allow a firm clamping force to be applied to the fastener and reduce the likelihood that the corners of the fastener will be swept.
  • the positive coupling of the self-adjusting jaws along the opposite sides of the fastener will allow sufficient torque to be applied to effect the rotation of the fastener.
  • the self-adjusting jaw 1 illustrated in Figure 1 includes articulating portions 5, 6 that extend outwardly, each having an opening 7 to receive a respective articulation pin 15, 22 for pivotal mounting of the jaw self-adjusting associated jaw member.
  • Self-adjusting jaws and articulation pins can be formed of any suitable material, including: metals such as steel and, preferably, can be formed from spring steel alloy having a hardness range of approximately 59 to 61 Rockwell C.
  • Figure 3 of the drawings illustrates another embodiment of the hand tool according to the present invention, which is formed with a pair of movable clamps 25.
  • the reference numbers are used in a manner consistent with those of In the embodiment illustrated in Figure 2, the essential differences are that the plate body 26 is formed to have a greater lateral expansion than in Figure 2 in order to
  • the pin 23 may be placed in a desired notch to allow the self-adjusting jaws 16, 21 to fit the fasteners having a variety of sizes, while maintaining the distance (D) between the handles 17, 9
  • FIG. 4 illustrate mobile articulation pliers 29.
  • This embodiment includes larger plate bodies 26, 33, respectively on the right sides. and left of the members elongated, each plate body has an elongated series of adjacent notches 35, 36 which, in the assembled and functional position, overlap and interconnect with a loose pin 37.
  • Loose pin 37 is illustrated in Figures 5 and 6 and is configured as a rod member 40 that has a D-shaped cross section ( Figure 6) and includes a stop end 41 at one end of the rod and a knob knurled 39 on the other end of the rod.
  • the pin 37 may be provided with a pair of muted knobs, each placed at each end of the rod 40 (not shown).
  • the circle 38 shown in Figure 4 illustrates a position of the rod 40 in the series of notches, in order to provide a pivotal connection between the respective elongate members that form the tool 29.
  • the loose pin 37 moves to the appropriate notch of the series of notches.
  • FIG. 7 is a side elevation view of the hand tool of this embodiment, wherein the series of elongated and overlapping notches 35, 36 are shown coupled by the adjustment pin 37, loose, at the ends thereof, which - It provides the greatest opening distance between the jaws.
  • Figure 8 illustrates an embodiment alternative of the mobile articulation clamps 42, similar to that shown in Figures 4 to 7.
  • this embodiment includes larger plate bodies 45, 46 and left and right jaws 47, 48 more robust, which are displaced in 53 , 54, respectively, so that the jaws 47, 48 are essentially opposite each other.
  • the self-adjusting jaws 32, 34 are pivotally connected to the respective jaw members 47, 48 by pins 55, 56.
  • the self-adjusting jaws and the articulation pins can be formed of any suitable material, including metal, for example steel, and preferably they can be formed of spring steel alloy having a hardness range of about 59 to 61 Rockwell C.
  • the plate body 45 is provided with a series of elongated notches 51 and the plate body 46 has a series of elongated faces 52, which overlap each other in the operating position, the elongate members are pivotally interconnected by a loose pin 37 in the same manner as described in relation to Figures 4 to 7. Therefore, the hand tool according to this modality can adapt to a head 57 of a large fastener, self-adjusting, due to the adjustment capacity that provides the loose pin 37 and to the series of overlapping elongated notches, the spacing d2 between the handles 17, 9 can be kept to a minimum to provide the greatest possible leverage, as well as to ensure the coupling of the fastener 57 by means of self-adjusting jaws.
  • Figure 9 illustrates a hand tool according to the present invention, configured as a hand tool of the lever rod type, which is generally referred to as pressure clamps, well known in this field. Therefore, it is not considered necessary to explain in detail the operation of the lever rod arrangements already known and reference is made only to the relevant portions incorporating novel features according to the present invention.
  • the pressure pliers 60 include a first handle 66 having a fixed jaw 61 rigidly connected thereto and a movable jaw 62 pivotally connected to the handle 66 by the pivot pin 63.
  • the fixed jaw 61 and the movable jaw 62 have , each, self-adjusting jaws 43, 44 respectively, pivotally connected thereto by means of articulation pins 64, 65.
  • the self-adjusting jaws and articulation pins can be of any suitable material, including: metals, such as steel, and preferably spring steel alloy having a hardness range of 59 to 61 Rockwell C.
  • a movable handle 69 is pivotally connected to one end of the movable jaw 62 by a pivot pin 71, a rod
  • the lever 68 is pivotally connected at one end of the articulation pin 70 intermediate to the ends of the movable handle 69 and is functionally connected to the handle 66 at its other end, in a conventional manner.
  • the other end of the handle 66 is provided with an adjusting screw 67 to engage with the lever rod 68 and provide the adjustable placement between the fixed jaw and the movable jaw, and the mobile handle 69 includes a release lever 72 pivotally connected to the same by a pivot pin 73 to operate in the conventional manner. Accordingly, the self-adjusting jaws 43, 44 are configured to automatically align with opposite pairs of the sides of a hexagonal workpiece, in the manner shown for the fastener 74 of Figure 9.
  • This arrangement provides a more secure coupling by part of the jaws of the pressure pliers in order to allow a firmer clamping force to be applied to the fastener and allow a more effective application of the force or torque to a fastener or a piece of work, which reduces the probability that the corners of the fasteners are swept during the application of the torque.
  • the self-adjusting pliers can be properly positioned to provide adequate distance between the jaws 61, 62, in order to apply a clamping force and a torque force of torsion more effective.
  • the fixed jaw member 61 of the pressure pliers 60 may be provided with a groove 75 that extends longitudinally, which receives the articulation pin 64 of the self-adjusting jaw 43.
  • the articulation pin 64 can move linearly within the longitudinal groove 75, to provide better alignment of the self-adjusting jaw members 43, 44, to more accurately and completely engage with the opposite pairs of the sides of the hexagonal fastener to be fastened.
  • Figure 11 is an illustration of the self-adjusting jaw 43 removed from its application to the fixed jaw 61.
  • Figure 12 illustrates another embodiment of the pressure clamps 75, wherein the elements to be they appear in Figure 12 are represented with the same corresponding reference numbers as mentioned in Figure 9.
  • the fixed jaw 61 and the movable jaw 62 each have respective cutting edges 76, 77 to cut a workpiece, for example a cable 78.
  • the plane of the pivotal movement of the movable jaw 62 is slightly offset from the plane of the fixed jaw 61.
  • the cutting operation is carried out in successive stages during which the movable jaws are closed to couple and cut a portion of the cable 78, operating the handle 69, after which the movable jaw is released and the screw Adjustable 67 is tightened progressively after each cutting movement, so that jaws 61 and 62 move progressively closer to each other, until the workpiece is completely cut .
  • the pressure pliers 75 can be used to cut through the insulating sheath of the various types of electric wires and cables, or the like, in order to strip or remove the insulating sheath.
  • FIG. 13 Another embodiment of the pressure clamps is illustrated in Figure 13, where a pair of pressure clamps 78 is configured to operate with both hands.
  • the pressure pliers 78 include a fixed handle 82 having a fixed jaw 79 connected thereto.
  • a lower fixed handle portion 88 receives an adjustment screw 89.
  • the adjustment screw 89 has an extended length and includes a threaded portion 90 and an unthreaded portion 91.
  • the movable jaw 80 is pivotally connected to the fixed handle 82 by a pin of articulation 83, a movable handle 84 is pivotally connected to both the movable jaw 80 and the lever rod, in a conventional manner.
  • the movable handle 84 is displaced at 85 to provide a handle portion 86 that can be moved up and a handle portion 87 that can be moved down, which extends at an angle to the portion 86.
  • the operator holds with one hand the lower portion of the fixed handle 88 and with the other the lower portion of the mobile handle 87, to move both options forward and away, causing the movable jaw 80 to move forward and away from the fixed jaw 79.
  • the fixed and mobile jaws 79 and 80 are each provided with straight blades, like scissors, and only one of them is shown in the mobile jaw 80 at number 81.
  • Pressure clamps 78 are used to cut very thick and relatively hard material, for example metal sheets and the like. The cutting operation of this type of material can be carried out by successive cutting movements, with or without changing the position of the adjusting screw 89.
  • FIG. 14 An additional embodiment of the pressure clamps is used in Figure 14, where additional features of this invention are incorporated.
  • a pair of movable jaws 93, 94 are pivotally connected to a fixed handle 66 by the respective articulation pins 101, 103.
  • the movable jaw 93 includes a gear segment 102 that engages with a gear segment 104 provided in the movable jaw 94.
  • a movable handle 69 is pivotally connected to the movable jaw 94 and also to a lever rod 68 which is pivotally connected to the movable handle 69, at one end, and is functionally connected to the fixed handle 66, by the another, so that the movement of the mobile handle 69 produces the movement of the mobile handle 94 and, the engagement of the gear segments 102, 104 produces the joint movement of the mobile jaw 93.
  • the operation of the mobile handle 69 towards and away from the original fixed handle 66 the movement of the two jaws 93, 94 forward and away from each other.
  • the movable jaws 93, 94 are provided with displaced portions 95, 96, respectively at the outer ends of the movable jaws are, respectively, a self-adjusting jaw 16, 21.
  • the displaced portions 95, 96 allow the pivotal movement of the jaws of self-adjustment without the coupling of the outer lower edges 97, 98 of the self-adjusting jaws with the edges 99, 100 directed inwards of the movable jaws.
  • the pressure clamps of this modality due to the joint movement of the movable jaws 93 and 94 and the pivotal movement of the self-adjusting jaws 16, 21, allow the precise adjustment of the locking tool and the complete coupling of the self-adjusting jaws with a hexagonal workpiece, for example ' a fastener 105, to allow efficient application of a clamping force and a rotational force or torque on said fastener.
  • This construction causes an effective application of the clamping force and a torque to the fastener, without the edges of the clamp being swept and also allowing the application of a torque to a fastener that already has the swept edges, due to the coupling of the pair of flat jaw surfaces with opposite adjacent sides of the fastener.
  • Figure 15 illustrates a modification of the pressure clamps illustrated in Figure 14, where the corresponding elements have retained their same reference number.
  • the movable jaws 106, 107 are pivotally connected to a fixed handle member for joint movement in the same manner as set forth in the mode of Figure 14.
  • the movable jaws include displaced portions 108, 109, respectively and , in general, straight upper portions 110, 111.
  • the movable jaw 106 is provided with a serrated portion 112 and the movable jaw 107 is provided with a serrated portion 113.
  • the serrated portions may have an inverse or any other tooth shape. conventional.
  • the pressure clamps of this modality have serrated jaw portions that can be advantageously used for holding small subjects between them.
  • Figure 16 illustrates yet another embodiment of the hand tool according to the invention and in particular of pressure pliers 114 having symmetrical left and right jaws 115, 116, which are pivotally connected to a central handle 119 by a pivot pin 127.
  • the left handle 117 is pivotally connected to the left jaw 115 and a lever rod 120 is pivotally connected to one end of the left handle 117 and is operatively connected to the other end of the central handle 119.
  • a right handle 118 is pivotally connected to the right jaw 116 and a lever rod 121 is pivotally connected, at one end, to the right handle 118 and is functionally connected, at the other end, to the central handle 119.
  • the side springs 124, 125 are connected respectively, at the first ends, to the respective left and right jaws 115, 116 and their opposite ends to a pin 126.
  • the left and right jaws 115, 116 are each provided with offset portions 128, 129, respectively, of so that the outer ends of the respective jaws are diametrically opposed.
  • the left jaw 115 has at its upper end a self-adjusting jaw 16 which is pivotally connected thereto by a pivot pin 15, and the upper end of the right jaw 116 has a self-adjusting jaw 2.1 pivotally connected thereto by a pin 22
  • the displaced portions 128 and 129 allow the self-adjusting jaws 16, 21 to move essentially in the same plane of movement.
  • An adjusting screw 49 is provided at the outer end of the central handle 119 to adjust the lever rods in the normal manner, and the outer ends of the handles 117, 118 respectively have release levers 122, 123 that function in the typical manner. .
  • This pressure clamp configuration provides a uniform and uniform movement of the jaws 15, 16 during the operation of the handles 117, 118 and the self-adjusting jaws 16, 21 are placed symmetrically around the workpiece or the hexagonal fastener 17 to allow a clamping force or a rotational force or torque to be applied effectively.
  • the details of the connection of the lever rods 120, 121 with the central handle 119 are shown in Figures 17 and 18.
  • central handle 119 is formed with a pair of separate plates 119a, 119b, which are curved outwardly and are opposite in the central region thereof, to provide a longitudinal guide for the ends of the lever rods 120, 121.
  • the lever rod 120 is provided, at one of its ends, with a pair of hemispherical pieces 130 placed on opposite sides, and the lever rod 121 has, at one of its ends, a pair of hemispherical pieces 131, also placed on opposite sides thereof, as can be seen in Figure 17.
  • the pair of curved plates 119a; 119b forming the central handle 119 provide a pair of open sides 132, 133, through which the lever rods 120, 121 and the semi-spherical parts 130, 131 extend to the lever rods so that they only move longitudinally within the central handle and pivot with respect thereto, however preventing the ends of the lever rods from being . move laterally through the open sides 132, 133 of the central handle.
  • the lower end of the central handle 119 is formed with a female threaded portion that receives the adjustment screw 49.
  • the ends of the lever rods 120, 121 run into the flat top of the screw adjustment 49 and are pushed to this position by the springs 124, 125.
  • the adjustment of the adjustment screws 49 allows the clamps to be adapted to the heads of the fasteners having various sizes, in order to effect the desired clamp force on the head of the fastener.
  • Figures 19 and 20 illustrate a modification of the connection of the lever rods within the central handle 119.
  • the ends of the lever rods 120, 121 are pivotally interconnected by a pivot pin 134, which is formed with the hemispherical heads 135, 136 at the opposite ends thereof.
  • the hemispherical heads restrict the ends of the lever rods only to a longitudinal and pivotal movement with respect to the central handle 119, while preventing lateral movement of the lever rod ends outside the open sides.
  • the pivotally interconnected ends of the lever rods 120, 121 run into the flat upper surface of the adjustment screw 49 and are pushed to engage the springs 124, 125 ( Figure 16).
  • FIG 21 illustrates an alternative embodiment of the pressure clamps shown in Figure 16.
  • This pair of pressure clamps 139 is similar to that illustrated in Figure 16, except that the left and right handles 140, 141 are longer and they extend outward, beyond the outer end of the central handle 119.
  • the lower ends 142, 143 of the respective left and right handles diverge outward in a obtuse angle with respect to the upper portions 144, 145.
  • the greater length of the handles 140, 141 allows the operation of the pressure clamps 139 with both hands, and provides a greater mechanical advantage.
  • the lower holding portion 142 can be held with one hand and the lower holding portion 143 with the other, to provide movement of the handles in opposite directions and to operate the self-adjusting jaws 16, 21 to engage a piece of work, for example the head of a fastener 17. Therefore, the greater length of the handles not only provides a significant increase in the mechanical advantage of the pressure tongs 139, but also eliminates the need for release levers.
  • Pressure pliers 139 also include self-adjusting jaws 16, 21 as described in relation to Figure 16.
  • FIG 22 shows a further alternative arrangement of the pressure pliers illustrated in Figure 16.
  • the pressure pliers 146 have a central handle and left and right handles as described in Figure 16.
  • Pressure pliers 146 They are also provided with a pair of jaws 147, 148, each including linear blade portions.
  • the jaws 147, 148 are pivotally interconnected to the central handle by a common pivot, at 149, for movement forward and away from each other.
  • the linear blade portions of the jaws 147, 148 are used to cut wires, cables and the like, for example cable 150.
  • Figure 23 shows a pair of pressure pliers 151 similar to those illustrated in Figure 16, but in this case is provided with a pair of arcuately curved jaws 152, 153.
  • the internal surfaces of the curved jaws are provided with serrated portions to allow a firm hold of the work pieces having generally circular cross sections, such as tube 154 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gripping Jigs, Holding Jigs, And Positioning Jigs (AREA)

Abstract

Hand tool provided with at least two elongated members (9, 10, 12, 17, 18) pivotally interconnected by a pivot joint (11, 23) to provide a pair of handles and a pair of jaw carrying members. Each jaw carrying members includes a self-adjusting jaw (16, 22) pivotally connected thereto, and each self-adjusting jaw is configured to have an angle-shape whereby operation of the handle causes engagement of a multi-sided workpiece by the angle-shaped jaws. The joint allows adjustment of the jaw spacing to accommodate different size fasteners.

Description

HERRAMIENTA MANUAL QUE TIENE MANGOS ARTICULADOS MEDIANTE PIVOTES MANUAL TOOL THAT HAS ARTICULATED HANDS BY PIVOTS

ANTECEDENTES DE LA INVENCIÓN 5BACKGROUND OF THE INVENTION 5

1. Campo de la invención1. Field of the invention

La invención se relaciona con herramientas manuales articuladas con pivotes, para sujetar, sostener o cortar piezas de trabajo que tienen 10. diversas configuraciones.The invention relates to hand tools articulated with pivots, for holding, holding or cutting work pieces that have 10. various configurations.

2. Descripción de los Antecedentes2. Description of the Background

De la patente de los Estados Unidos No. 5,022,291 de MacBain, ya se sabe cómo proporcionarFrom United States Patent No. 5,022,291 to MacBain, it is already known how to provide

15 una herramienta de trabajo articulada con pivotes que tenga por lo menos una mordaza pivotable para acoplarse con cualquier pieza de trabajo dentro de una gama de tamaños diferentes, por ejemplo tuercas o pernos. Las mordazas pivotables tienen superficies15 an articulated pivot work tool that has at least one pivotable jaw to engage with any work piece within a range of different sizes, for example nuts or bolts. Pivoting jaws have surfaces

20 aplanadas opuestas entre si y los mangos incluyen una conexión pivotable y ajustable para permitir que la herramienta de mano se acople a una pluralidad de sujetadores de diferentes tamaños. Sin embargo, las superficies planas de las mordazas no permiten un20 flattened opposite each other and the handles include a pivotable and adjustable connection to allow the hand tool to be coupled to a plurality of fasteners of different sizes. However, the flat surfaces of the jaws do not allow a

25 acoplamiento suficiente con las superficies externas de la tuerca, de manera que cuando se aplica una fuerza de giro con la herramienta manual de McBain, la herramienta fácilmente se desliza del sujetador o hace que las superficies externas se barran, dificultando o imposibilitando el retiro o instalación del sujetador. Otra herramienta de mano convencional que tiene mangos articulados mediante pivotes y que incluye una característica de traba se muestra en la Patente de los Estados Unidos No. 4,601,221 de Kal brenner et al., que expone un dispositivo de pinza de configuración rectangular que incluye dos mordazas opuestas, cada una tiene una porción de mordaza en ángulo recto, montada por pivotes, que forma una abertura rectangular autoaj ustable para acoplar y sostener una pieza de trabajo rectangular. Se expone que las mordazas se acoplan únicamente a piezas de trabajo cuadradas o rectangulares y que abarcan todo • al perímetro de estas piezas o todo el perímetro del arreglo de una pluralidad de piezas rectangulares que se desea sujetar entre si. Es claro que las mordazas autoaj ustables de Kalkbrenner et al. no están diseñadas para acoplarse con cabezas de sujetadores roscados para aplicar una fuerza de rotación o un par de torsión sobre las mismas.25 sufficient coupling with the outer surfaces of the nut, so that when a turning force is applied with the McBain hand tool, The tool easily slips off the fastener or causes external surfaces to be swept, making it difficult or impossible to remove or install the fastener. Another conventional hand tool that has pivot articulated handles and that includes a locking feature is shown in US Patent No. 4,601,221 to Kal brenner et al., Which discloses a clamp device of rectangular configuration that includes two jaws Opposite, each has a jaw portion at right angles, mounted by pivots, which forms a self-adjusting rectangular opening usable to attach and hold a rectangular workpiece. It is stated that the jaws are coupled only to square or rectangular work pieces and that cover everything • to the perimeter of these pieces or the entire perimeter of the arrangement of a plurality of rectangular pieces that one wishes to hold together. It is clear that the usable self-adjusting jaws of Kalkbrenner et al. They are not designed to engage with threaded fastener heads to apply a rotational force or torque on them.

Las pinzas de presión convencionales se exponen en la Patente de los Estados Unidos No. 3,635,107 de Schmidt . Las pinzas de presión que se describen ahi incluyen porciones de mordaza planas y fijas, con o sin segmentos dentados, porciones de mordaza curvadas fijas que incluyen segmentos dentados y combinaciones de segmentos dentados y planos fijos. Sin embargo, no se hace una revelación de mordazas autoaj ustables y articuladas por pivotes, para acoplar una pieza de trabajo de múltiples lados y aplicar una fuerza de rotación o par de torsión a la misma, tampoco se exponen mordazas pivotables que se formen con segmentos de corte, ni pinzas de presión que tienen dos miembros de mordaza unidos por pivotes a un miembro alargado para proporcionar una amplia gama de movimientos.Conventional pressure clamps are set forth in U.S. Patent No. 3,635,107 to Schmidt. The pressure tongs described there include flat jaw portions and fixed, with or without toothed segments, fixed curved jaw portions that include toothed segments and combinations of toothed segments and fixed planes. However, a revelation of usable and articulated pivot jaws is not disclosed, to couple a multi-sided workpiece and apply a rotational force or torque to it, nor are pivotal jaws that are formed with segments exposed. cutting, or pressure clamps that have two jaw members pivotally attached to an elongated member to provide a wide range of movements.

Además se tiene la Patente de los Estados Unidos No. 2,464,145 de Mead y la Patente de los Estados Unidos No. 2,558,440 de Johnson, que exponen herramientas de mano que tienen mangos articulados con pivotes e incluyen una ranura formada en uno de los mangos en la conexión del pivote, para permitir que la herramienta de mano se adapte a piezas de trabajo de diferentes tamaños. Sin embargo, ninguna de estas herramientas de mano articuladas por pivote, de tipo convencional, proporcionan una ranura de ajuste en los dos miembros pivotados, para permitir mayor capacidad de ajuste y de adaptación a las piezas de trabajo que tienen grandes tamaños.In addition there is the United States Patent No. 2,464,145 of Mead and the United States Patent No. 2,558,440 of Johnson, which expose hand tools that have pivoted articulated handles and include a groove formed in one of the handles in the Pivot connection, to allow the hand tool to adapt to work pieces of different sizes. However, none of these conventional articulated pivot hand tools provide an adjustment slot in the two pivoted members, to allow greater capacity for adjustment and adaptation to workpieces that have large sizes.

SUMARIO DE LA INVENCIÓN Esta invención resuelve las deficiencias de la técnica anterior con relación a la capacidad de las mordazas de una herramienta de mano que tiene mangos pivotados para mantener suficiente contacto con una pieza de trabajo de múltiples lados, por ejemplo un sujetador hexagonal, como puede ser una tuerca o un perno, cuando se aplica una fuerza de rotación o par de torsión. Esto hace que la herramienta de mano con mangos articulados por pivotes aumente su capacidad de aplicar una fuerza de rotación o par de torsión suficiente en la pieza de trabajo y de proporcionar acoplamiento adecuado con la misma, para evitar el barrido o daño a los suj etadores . Además, una herramienta de mano que incorpora las mordazas pivotables y autoaj ustables de esta invención produce un mejor acoplamiento a piezas de trabajo con múltiples lados, como son los sujetadores hexagonales, proporcionando acoplamientos en cuatro de los lados del sujetador con las superficies de mordaza. En consecuencia, se aumenta la capacidad de la herramienta de mano para aplicar un par de torsión, asi como la capacidad para acoplarse efectivamente al elemento sujetador hexagonal y hacerlo girar, cuando éstos tienen sus superficies desgastadas o barridas al igual que cuando el sujetador hexagonal no está dañado. Adicionalmente, esta invención resuelve las deficiencias de las herramientas de mano típicas de la técnica anterior que utilizan acción de varillaje de palanca, proporcionando a las mordazas que están interconectadas por pivotes, superficies de corte que facilitan la sujeción y el corte de las piezas de trabajo y proporcionando un par de miembros de mordaza interconectados pivotalmente sobre miembros alargados para aumentar la eficacia del accionamiento que se hace de éstos.SUMMARY OF THE INVENTION This invention resolves the shortcomings of the prior art in relation to the jaw capacity of a hand tool having pivoted handles to maintain sufficient contact with a multi-sided workpiece, for example a hexagonal fastener, such as a nut. or a bolt, when a rotational force or torque is applied. This causes the hand tool with pivot articulated handles to increase its ability to apply a sufficient rotational force or torque on the workpiece and to provide adequate coupling with it, to avoid sweeping or damaging the fasteners. . In addition, a hand tool incorporating the pivotable jaws and self-adjusting jaws of this invention produces a better coupling to workpieces with multiple sides, such as hexagonal fasteners, providing couplings on four sides of the fastener with the jaw surfaces. Consequently, the ability of the hand tool to apply a torque is increased, as well as the ability to effectively engage the hexagonal fastener element and rotate it, when they have their worn or swept surfaces just like when the hexagonal fastener does not is damaged. Additionally, this invention resolves the shortcomings of the typical prior art hand tools that use lever linkage action, providing the jaws that are interconnected by pivots, cutting surfaces that facilitate the clamping and cutting of the work pieces and providing a pair of jaw members interconnected pivotally on elongated members to increase the efficiency of the drive made of them.

De acuerdo a una primera modalidad de la invención, la herramienta de mano está provista con por lo menos dos miembros alargados interconectados por medio de pivotes, en una junta de pivote, para proporcionar un par de mangos y un par de miembros de soporte de mordaza. Cada miembro de soporte de mordaza incluye una mordaza autoaj ustable conectada pivotalmente al mismo y cada mordaza autoaj ustable está configurada para tener una forma angular, con lo cual la operación del mango produce el acoplamiento a una pieza de trabajo de múltiples lados por medio de las mordazas con forma angular, lo que permite el acoplamiento firme de una pieza de trabajo, para impartir una fuerza de rotación o par de torsión a la misma. Cada mordaza de forma angular puede estar configurada para acoplarse a dos lados de un sujetador hexagonal y la junta de pivote puede configurarse como una junta con articulación móvil.According to a first embodiment of the invention, the hand tool is provided with at least two elongated members interconnected by means of pivots, in a pivot joint, to provide a pair of handles and a pair of jaw support members . Each jaw support member includes a usable self-adjusting jaw pivotally connected thereto and each usable self-adjusting jaw is configured to have an angular shape, whereby the operation of the handle causes the coupling to a multi-sided workpiece by means of the angularly shaped jaws, which allows the firm coupling of a workpiece, to impart a rotational force or torque to it. Each angle-shaped jaw can be configured to fit on two sides of a hexagonal fastener and the pivot joint can be configured as a joint with mobile joint.

De acuerdo a otra modalidad de la invención, la articulación móvil puede incluir una ranura formada en por lo menos uno de los miembros alargados y la ranura incluye por lo menos dos muescas de ajuste. En el otro lado de los miembros alargados se encuentra un pasador para interconectar pivotalmente los miembros alargados, el pasador es móvil dentro de la ranura y puede pasar de una muesca de ajuste a la otra, permitiendo asi el ajuste de la separación de la mordaza para adaptarla a diferentes tamaños de sujetadores. Adicionalmente, la ranura se proporciona con más de dos muescas de ajuste para permitir mayor capacidad de ajuste en la herramienta de mano.According to another embodiment of the invention, the movable joint may include a groove formed in at least one of the elongated members and the groove includes at least two adjustment notches. On the other side of the elongated members is a pin to pivotally interconnect the elongated members, the pin is movable within the groove and can pass from one adjustment notch to the other, thus allowing adjustment of the jaw spacing for adapt it to different sizes of bras. Additionally, the groove is provided with more than two adjustment notches to allow greater adjustment capacity in the hand tool.

De acuerdo a otra modalidad de la invención, la herramienta de mano está configurada para tener una segunda' ranura en el otro de los miembros alargados, la segunda ranura tiene por lo menos dos muescas de ajuste. Adicionalmente, el pasador para interconectar los miembros alargados está montado giratoriamente y está configurado para tener una sección transversal en forma de D, con lo cual el pasador puede girar para alinear el lado plano de la forma D con una dimensión longitudinal de cada una de las ranuras, a fin de permitir el movimiento deslizante entre los dos miembros alargados y proporcionar ajuste y ubicación del lado curvado del pasador dentro de las muescas respectivas, con el fin de evitar el movimiento pivotante relativo de los mangos alargados y permitir la operación de la herramienta de mano.According to another embodiment of the invention, the hand tool is configured to have a second 'slot on the other of the elongate members, the second groove has at least two notches adjustment. Additionally, the pin for interconnecting the elongated members is rotatably mounted and is configured to have a D-shaped cross section, whereby the pin can rotate to align the flat side of the D-shape with a longitudinal dimension of each of the grooves, in order to allow sliding movement between the two elongated members and provide adjustment and location of the curved side of the pin within the respective notches, in order to avoid the relative pivoting movement of the elongated handles and allow the operation of the hand tool.

Adicionalmente, en un extremo del pasador giratorio puede proporcionarse una cabeza y en el otro extremo una perilla moleteada para facilitar la rotación del pasador a una posición deseada. Además, en cada una de las ranuras pueden proporcionarse más de dos muescas de ajuste para permitir mayor capacidad de ajuste de la herramienta de mano.Additionally, at one end of the rotating pin a head can be provided and at the other end a knurled knob to facilitate rotation of the pin to a desired position. In addition, more than two adjustment notches can be provided in each of the slots to allow greater adjustment of the hand tool.

Por otra parte, la herramienta de mano articulada por pivotes puede también incluir una mordaza de autoajuste, de forma angulada, montada por pivotes a cada uno de los miembros alargados, para el acoplamiento con una pieza de trabajo de múltiples lados y, en particular, cada mordaza de autoajuste y de forma angulada puede configurarse para acoplar dos lados adyacentes de un sujetador hexagonal.On the other hand, the pivot articulated hand tool can also include a self-adjusting jaw, angled, pivotally mounted to each of the elongate members, for coupling with a multi-sided workpiece and, in particular, Each self-adjusting and angled jaw can be configured to couple two adjacent sides of a hexagonal fastener.

De acuerdo a otra modalidad de la invención, se proporciona una herramienta de mano, del tipo varillaje de palanca, que incluye: elementos interconectados por pivotes, que tienen miembros de acoplamiento a la pieza de trabajo y un par de mangos, cada uno de ellos conectado funcionalmente a uno de los respectivos elementos interconectados por pivotes, y un varillaje de palanca conectado funcional ente entre los mangos. Además, cada uno de los miembros de acoplamiento a la pieza de trabajo incluye una mordaza autoaj ustable que está conectada por pivotes al mismo y cada mordaza está configurada para tener una forma angulada y poder acoplarse con los dos lados adyacentes de un sujetador hexagonal. Por otra parte, la conexión pivotable de por lo menos una de las mordazas ajustables con un respectivo miembro de acoplamiento a la pieza de trabajo puede proporcionarse mediante una ranura formada en una de las mordazas, quedando el miembro y un pasador fijo a la otra mordaza y al miembro, para proporcionar mayor capacidad de ajuste de las mordazas. De acuerdo a otra modalidad de la invención, se proporciona una herramienta de mano, tipo varillaje de palanca, que incluye:: elementos interconectados mediante pivotes, que tienen miembros de acoplamiento a la pieza de trabajo, un par de mangos, cada uno de ellos conectado f ncionalmente a los respectivos • elementos interconectados, y un varillaje de palanca conectado funcionalmente entre los mangos. Además, cada uno de los miembros de acoplamiento a la pieza de trabajo está configurado para tener una superficie de corte y las superficies de corte pueden configurarse como navajas rectas o pueden configurarse como superficies de corte curvadas para facilitar el corte de miembros circulares .According to another embodiment of the invention, there is provided a hand tool, of the lever linkage type, which includes: interconnected elements by pivots, which have coupling members to the workpiece and a pair of handles, each of them functionally connected to one of the respective elements interconnected by pivots, and a lever linkage connected functionally between the handles. In addition, each of the coupling members to the workpiece includes a usable self-locking jaw that is pivotally connected thereto and each jaw is configured to have an angled shape and be able to engage with the two adjacent sides of a hexagonal fastener. On the other hand, the pivotable connection of at least one of the adjustable jaws with a respective coupling member to the workpiece can be provided by a groove formed in one of the jaws, the member and a pin being fixed to the other jaw. and to the member, to provide greater ability to adjust the jaws. According to another embodiment of the invention, there is provided a hand tool, lever linkage type, which includes :: elements interconnected by pivots, having coupling members to the workpiece, a pair of handles, each of them functionally connected to the respective interconnected elements, and a lever linkage functionally connected between the handles. In addition, each of the workpiece coupling members is configured to have a cutting surface and the cutting surfaces can be configured as straight knives or can be configured as cutting surfaces curved to facilitate the cutting of circular members.

De acuerdo con otra modalidad de la invención, se proporciona una herramienta de mano, del tipo varillaje de palanca, que incluye: primero y segundo elementos alargados, un par de miembros de acoplamiento a la pieza de trabajo conectados mediante pivotes al primer miembro alargado, mientras que el segundo miembro alargado forma un mango conectado por pivotes a uno de los miembros de acoplamiento de la pieza de trabajo. También, un primer varillaje de palanca está interconectado funcionalmente entre el primero y segundo elementos alargados y un mecanismo de accionamiento para el otro de los miembros de acoplamiento a la pieza de trabajo. Por lo tanto, la manipulación del mango y la operación del mecanismo de accionamiento ocasionan que los miembros de acoplamiento a la pieza de trabajo se muevan hacia delante y en alejamiento uno de otro, para facilitar el acoplamiento con la pieza de trabajo. El mecanismo de accionamiento puedeAccording to another embodiment of the invention, a hand tool is provided, of the lever linkage type, which includes: first and second elongate elements, a pair of coupling members to the workpiece connected by pivots to the first elongated member, while the second elongate member forms a handle pivotally connected to one of the coupling members of the workpiece. Also, a first lever linkage is functionally interconnected between the first and second elongate elements and a drive mechanism for the other of the coupling members to the workpiece. Therefore, the manipulation of the handle and the operation of the drive mechanism cause the coupling members to the workpiece to move forward and away from each other, to facilitate coupling with the workpiece. The drive mechanism can

> incluir un mecanismo de operación que interconecta funcionalmente al par de miembros de acoplamiento a la pieza de trabajo para un movimiento conjunto. Además, el mecanismo de operación puede incluir un segmento de engrane formado en cada uno de los miembros de acoplamiento a la pieza de trabajo, los segmentos de engrane engranan entre sí, de manera que el movimiento de uno de los miembros de acoplamiento a la pieza de trabajo por operación del mango, transmite el movimiento al otro miembro de acoplamiento a la pieza de trabajo para el accionamiento del mismo.- Cada miembro de acoplamiento a la pieza de trabajo puede incluir una mordaza autoajustable conectada mediante pivotes al mismo, y cada una de las mordazas puede estar configurada para tener una forma angular y poder acoplarse con dos lados adyacentes de un sujetador hexagonal .> include an operating mechanism that functionally interconnects the pair of coupling members to the workpiece for a joint movement. In addition, the operating mechanism may include a gear segment formed in each of the coupling members to the workpiece, the Gear segments engage each other, so that the movement of one of the coupling members to the workpiece by operation of the handle, transmits the movement to the other coupling member to the workpiece for actuation thereof.- Each Workpiece coupling member may include a self-adjusting jaw connected by pivots thereto, and each of the jaws may be configured to have an angular shape and be able to engage with two adjacent sides of a hexagonal fastener.

Además, los miembros de acoplamiento a la pieza de trabajo pueden tener segmentos dentados para proporcionar una sujeción firme de las piezas de trabajo con las que se acopla. Además, el mecanismo de accionamiento puede incluir un tercer elemento alargado que forma un segundo mango conectado pivotalmente al otro miembro de acoplamiento a la pieza de trabajo, y una segunda varilla de palanca puede estar conectada funcionalmente entre el primero y el segundo elementos alargados. Además, la primera y la segunda varillas de palanca pueden estar conectadas, cada una, a un primer extremo de los respectivos segundo y tercero elementos alargados y cada una puede conectarse a un segundo extremo del primer miembro alargado para un movimiento longitudinal y a pivote con respecto al mismo.In addition, the workpiece coupling members may have serrated segments to provide a firm hold of the workpieces with which it is coupled. In addition, the drive mechanism may include a third elongate element that forms a second handle pivotally connected to the other coupling member to the workpiece, and a second lever rod may be functionally connected between the first and second elongate elements. In addition, the first and second lever rods can each be connected to a first end of the respective second and third elongate elements and each can be connected to a second end of the first elongated member for movement longitudinal and pivot with respect to it.

El primer elemento alargado puede formarse con un par de placas curvadas complementarias, separadas, que forman un pasaje alargado en donde los segundos extremos de las varillas de palanca se mueven de manera pivotal y longitudinal. Los segundos extremos de las varillas de palanca pueden estar provistos, cada uno, con dos miembros semiesféricos en lados opuestos de los mismos, para permitir el movimiento pivotable y longitudinal dentro del pasaje.The first elongate element can be formed with a pair of complementary, separate curved plates, which form an elongated passage where the second ends of the lever rods move pivotally and longitudinally. The second ends of the lever rods may each be provided, with two hemispherical members on opposite sides thereof, to allow pivotal and longitudinal movement within the passage.

De acuerdo a otra modalidad de la invención, la herramienta de mano de varillaje de palanca puede también incluir un miembro de ajuste en el primer elemento alargado para proporcionar el acoplamiento de los segundos extremos de las varillas de palanca, proporcionando así capacidad de ajuste a los miembros de acoplamiento a la pieza de trabajo. Además, el miembro de ajuste puede estar formado a manera de miembro de rosca de tornillo, acoplado por roscado con un extremo externo de primer elemento alargado y un extremo del miembro de rosca de tornillo puede acoplarse a los segundos extremos de las varillas de palanca, para proporcionar capacidad de ajuste. Además, los segundos extremos de las varillas de palanca pueden estar interconectados por pivotes y los dos miembros semiesféricos puede proporcionarse en los lados opuestos de los segundos extremos de las varillas de palanca, para permitir el movimiento pivotal y longitudinal dentro del pasaje. Además, puede proporcionarse un miembro de ajuste en el primero elemento, para que se acople mediante los segundos extremos de las varillas de palanca y proporcione capacidad de ajuste a los miembros de acoplamiento de la pieza de trabajo; el miembro de ajuste puede formarse como un miembro de rosca de tornillo y acoplarse roscadamente con un extremo externo del primer elemento y un extremo del miembro de rosca de tornillo se acopla con los segundos extremos de las varillas de palanca.According to another embodiment of the invention, the lever linkage hand tool can also include an adjustment member in the first elongate element to provide the coupling of the second ends of the lever rods, thus providing adjustment capacity to the coupling members to the work piece. In addition, the adjusting member may be formed as a screw thread member, threadedly coupled with an outer end of the first elongate member and an end of the screw thread member may be coupled to the second ends of the lever rods, to provide adjustability. In addition, the second ends of the lever rods may be interconnected by pivots and the two hemispherical members may be provided. on opposite sides of the second ends of the lever rods, to allow pivotal and longitudinal movement within the passage. In addition, an adjustment member can be provided in the first element, so that it is coupled by the second ends of the lever rods and provides adjustment capacity to the coupling members of the workpiece; The adjusting member may be formed as a screw thread member and threadedly engage with an outer end of the first element and one end of the screw thread member engages with the second ends of the lever rods.

De acuerdo a otra modalidad de la invención, puede formarse una herramienta de mano del tipo varillaje de palanca, de manera que el segundo y el tercer elementos alargados sean más largos que un extremo externo del primer elemento alargado y se extiendan más allá de éste, con el fin de aumentar el apalancamiento de la herramienta de trabajo y permitir la operación de ésta con dos manos, a fin de eliminar la necesidad de una palanca de liberación para el mecanismo de trabado. Cada miembro de acoplamiento de la pieza de trabajo puede incluir una mordaza autoajustable que está conectada por pivotes al mismo, cada mordaza puede estar configurada para tener una forma angular que se acople con dos lados de un sujetador hexagonal. Alternativamente, cada uno de los miembros de acoplamiento a la pieza de trabajo puede estar configurado con una superficie de corte, Las superficies de corte pueden estar configuradas como cuchillas rectas o como superficies de corte curvadas.According to another embodiment of the invention, a hand tool of the lever linkage type can be formed, so that the second and third elongated elements are longer than an outer end of the first elongate element and extend beyond it, in order to increase the leverage of the work tool and allow its operation with two hands, in order to eliminate the need for a release lever for the locking mechanism. Each coupling member of the workpiece may include a self-adjusting jaw that is pivotally connected thereto, each jaw may be configured to have an angular shape that engages with two sides of a hexagonal bra. Alternatively, each of the coupling members to the workpiece may be configured with a cutting surface. The cutting surfaces may be configured as straight blades or as curved cutting surfaces.

De acuerdo a otra modalidad de la invención, cada miembro de acoplamiento a la pieza de trabajo puede tener una configuración arqueada y pueden proporcionarse varios dientes orientados hacia las superficies arqueadas internas de los miembros de acoplamiento a la pieza de trabajo, con el fin de facilitar la sujeción de una pieza de trabajo que tenga una superficie externa generalmente circular.According to another embodiment of the invention, each coupling member to the workpiece can have an arcuate configuration and several teeth oriented towards the internal arcuate surfaces of the coupling members to the workpiece can be provided, in order to facilitate the clamping of a work piece that has a generally circular outer surface.

BREVE DESCRIPCIÓN DE LOS DIBUJOSBRIEF DESCRIPTION OF THE DRAWINGS

Las características y ventajas anteriores al igual que otras más de esta invención serán evidentes a partir de la siguiente descripción de las modalidades preferidas, que se proporcionan como ejemplos no limitativos, con referencia a los dibujos que se acompañan, en donde: la Figura 1 es una vista en perspectiva de una mordaza autoajustable utilizada de acuerdo a la presente invención; la Figura 2 es una vista en elevación lateral de una primera modalidad de la herramienta de mano de acuerdo a la presente invención, que tiene una articulación móvil; la Figura 3 es una vista en elevación lateral de una segunda modalidad de la herramienta de mano de acuerdo a la presente invención, que tiene una articulación móvil; la Figura 4 muestra la herramienta de mano de la modalidad de la Figura 3, con los mangos separados para dar mayor claridad; las Figuras 5 y 6 muestran una vista en elevación lateral y una vista en sección transversal, respectivamente, del pasador de conexión utilizado en las modalidades de las Figuras 3 y 4; la Figura 7 es una vista en elevación lateral de la modalidad de la Figura 4 que muestra una posición ajustada de los mangos movidos pivotalmente; la Figura 8 es una vista en elevación lateral de la modalidad de la Figura 3, que muestra un arreglo ajustado diferente de los mangos movidos pivotalmente; la Figura 9 es una vista en elevación lateral de una herramienta de mano tipo varillaje de palanca de acuerdo a la presente invención y que incluye un par de miembros de mordaza autoaj ustables ; las Figuras 10 y 11 son vistas en elevación lateral de los elementos de la conexión entre el miembro de mordaza autoajustable y la herramienta de mano tipo varillaje de palanca; las Figuras 12 y 13 ilustran las herramientas de mano tipo varillaje de palanca de la presente invención cuyas porciones de mordaza de corte son, respectivamente, curvada y recta; la Figura 14 ilustra otra modalidad de la herramienta de mano tipo varillaje de palanca de acuerdo a la presente invención, que tiene segmentos de engrane interconectados funcionalmente con los miembros de mordaza para un movimiento conjunto, la Figura 15 ilustra otra modalidad de la herramienta de mano tipo varillaje de palanca de la presente invención, similar a la Figura 14 y que tiene segmentos de mordaza dentados; la Figura 16 ilustra una vista en elevación lateral de otra modalidad de la herramienta de mano tipo varillaje de palanca de acuerdo a la presente invención, que utiliza un par de miembros de mango; las Figuras 17 a 20 ilustran dos variaciones de las interconexiones de los varillajes de palanca de la herramienta de mano tipo varilla de palanca de acuerdo a la presente invención; la Figura 21 es una vista en elevación lateral de otra herramienta de mano tipo varillaje de palanca de acuerdo a la presente invención, que tiene un par de mangos alargados; y la Figura 22 y la Figura 23 ilustran otras modalidades de la herramienta de mano tipo varillaje de palanca de acuerdo a la presente invención, que incluye mordazas formadas con superficies de corte y superficies de sujeción arqueadas, respectivamente.The above features and advantages as well as others of this invention will be apparent from the following description of the preferred embodiments, which are provided as non-limiting examples, with reference to the accompanying drawings, where: Figure 1 is a perspective view of a self-adjusting jaw used in accordance with the present invention; Figure 2 is a side elevation view of a first embodiment of the tool hand according to the present invention, which has a mobile joint; Figure 3 is a side elevation view of a second embodiment of the hand tool according to the present invention, which has a movable joint; Figure 4 shows the hand tool of the embodiment of Figure 3, with the handles separated for clarity; Figures 5 and 6 show a side elevation view and a cross-sectional view, respectively, of the connecting pin used in the modes of Figures 3 and 4; Figure 7 is a side elevation view of the embodiment of Figure 4 showing an adjusted position of the pivotally moved handles; Figure 8 is a side elevation view of the embodiment of Figure 3, showing a different adjusted arrangement of the pivotally moved handles; Figure 9 is a side elevation view of a lever linkage type hand tool according to the present invention and including a pair of usable jaw members; Figures 10 and 11 are side elevation views of the connection elements between the self-adjusting jaw member and lever linkage type hand tool; Figures 12 and 13 illustrate the lever linkage type hand tools of the present invention whose cutting jaw portions are, respectively, curved and straight; Figure 14 illustrates another embodiment of the lever linkage type hand tool according to the present invention, which has gear segments functionally interconnected with the jaw members for a joint movement, Figure 15 illustrates another embodiment of the hand tool lever linkage type of the present invention, similar to Figure 14 and having serrated jaw segments; Figure 16 illustrates a side elevation view of another embodiment of the lever linkage type hand tool according to the present invention, which uses a pair of handle members; Figures 17 to 20 illustrate two variations of the interconnections of the lever rods of the lever rod type hand tool according to the present invention; Figure 21 is a side elevation view of another lever linkage type hand tool according to the present invention, which has a pair of elongated handles; Y Figure 22 and Figure 23 illustrate other embodiments of the lever linkage type hand tool according to the present invention, which includes jaws formed with cutting surfaces and arcuate clamping surfaces, respectively.

DESCRIPCIÓN DETALLADA DE LAS MODALIDADES PREFERIDASDETAILED DESCRIPTION OF THE PREFERRED MODES

Con referencia a la Figura 2, se ilustra una primera modalidad de la herramienta de mano de acuerdo a la presente invención, en forma de pinzas de articulación móvil 8. Las pinzas 8 se forman con un primer miembro alargado que incluye un mango derecho 9, un cuerpo semejante a una placa 10 y una mordaza izquierda 12. Un segundo miembro alargado incluye un mango izquierdo 17, un cuerpo semejante a una placa (sin número) y una mordaza derecha 18. Las mordazas izquierda y derecha 12, 18 están desplazadas con respecto a los cuerpos en forma de placa, a los cuales se conectan en las porciones 14, 19 respectivamente, con el fin de permitir que los extremos externos de las mordazas estén directamente opuestos entre sí. Las porciones de cuerpo en forma de placa están interconectadas pivotalmente mediante una articulación móvil que se proporciona al ajusfar las muescas 11 formadas en el cuerpo de placa 10 y un pasador o perno 23, conectado al cuerpo de placa del otro miembro alargado, y el pasador o perno 23 se extiende a través de las muescas de ajuste 11 en forma convencional, para permitir el ajuste en dos posiciones de las pinzas de articulación móvil. Como puede observarse de la Figura 2, una mordaza autoajustable 16 del lado izquierdo está montada pivotalmente mediante un pasador de articulación 15 al extremo exterior de la mordaza izquierda 12, y una mordaza autoajustable del lado derecho 21 está montada pivotalmente mediante el perno de articulación 22 a la mordaza derecha 18. La mordaza izquierda 12 está configurada para proporcionar un rebaje 13 para adaptarse al movimiento pivotal de la mordaza de ajuste 16 del lado izquierdo y la mordaza derecha 18 está configurada para proporcionar un rebaje 20 para adaptarse al movimiento pivotante de la mordaza autoajustable 21 del lado derecho.With reference to Figure 2, a first embodiment of the hand tool according to the present invention is illustrated, in the form of movable clamps 8. The clamps 8 are formed with a first elongated member that includes a right handle 9, a plate-like body 10 and a left jaw 12. A second elongated member includes a left handle 17, a plate-like body (no number) and a right jaw 18. The left and right jaws 12, 18 are displaced with with respect to the plate-shaped bodies, to which they are connected in portions 14, 19 respectively, in order to allow the outer ends of the jaws to be directly opposite each other. The plate-shaped body portions are pivotally interconnected by a movable joint that is provided by adjusting the notches 11 formed in the plate body 10 and a pin or bolt 23, connected to the plate body of the other elongate member, and the pin or bolt 23 se extends through the adjustment notches 11 in a conventional manner, to allow adjustment in two positions of the movable clamps. As can be seen from Figure 2, a self-adjusting jaw 16 on the left side is pivotally mounted by an articulation pin 15 to the outer end of the left jaw 12, and a self-adjusting jaw on the right side 21 is pivotally mounted by the articulation bolt 22 to the right jaw 18. The left jaw 12 is configured to provide a recess 13 to accommodate the pivotal movement of the adjustment jaw 16 on the left side and the right jaw 18 is configured to provide a recess 20 to accommodate the pivotal movement of the self-adjusting jaw 21 on the right side.

Una mordaza autoajustable 1, que es representativa de las mordazas autoajustables que se utilizan en esta exposición, se ilustra en la Figura 1. Cada mordaza autoajustable 1 incluye dos porciones laterales 2, 3, angularmente divergentes que se extienden a un -ángulo de aproximadamente 120° y que se intersectan en un vértice 4. La relación angular de las porciones laterales 2, 3 está configurada para que las dos porciones laterales 2, 3 se acoplen plenamente a lo largo de dos lados adyacentes de una cabeza de perno o tuerca hexagonales 24, como se observa en la Figura 2. De esta manera, las mordazas autoajustables opuestas, del lado derecho y del lado izquierdo, 16, 21 están esencialmente opuestas entre sí y se autoajustan alrededor de los pasadores de pivote respectivos 15, 22, para acoplar estrechamente los lados opuestos de la tuerca o cabeza de perno 24 como se muestra en la Figura 2, para permitir que se aplique una firme fuerza de sujeción al sujetador y reducir la probabilidad de que las esquinas de éste se barran. Además si las esquinas del sujetador estuvieran previamente barridas o dañadas, el acoplamiento positivo de las mordazas autoajustables a lo largo de los lados opuestos del sujetador permitirá que se aplique un par de torsión suficiente para efectuar la rotación del sujetador. También, la mordaza autoajustable 1 que se ilustra en la Figura 1 incluye porciones de articulación 5, 6 que se extienden hacia fuera, cada una tiene una abertura 7 para recibir un pasador de articulación respectivo 15, 22 para el montaje a pivote de la mordaza autoajustable del miembro de mordaza asociado. Las mordazas autoajustables y los pasadores de articulación pueden formarse de cualquier material adecuado, entre los que se incluyen: metales como el acero y, de preferencia pueden formarse de aleación de acero de resorte que tiene un intervalo de dureza de aproximadamente 59 a 61 Rockwell C.A self-adjusting jaw 1, which is representative of the self-adjusting jaws used in this exposure, is illustrated in Figure 1. Each self-adjusting jaw 1 includes two angularly divergent side portions 2, 3 extending at an angle of approximately 120 ° and intersecting at a vertex 4. The angular relationship of the lateral portions 2, 3 is configured so that the two lateral portions 2, 3 fully engage along two adjacent sides of a bolt or nut head hexagonal 24, as seen in Figure 2. In this way, the opposing self-adjusting jaws, on the right side and on the left side, 16, 21 are essentially opposite each other and are self-adjusting around the respective pivot pins 15, 22, to closely engage opposite sides of the nut or bolt head 24 as shown in Figure 2, to allow a firm clamping force to be applied to the fastener and reduce the likelihood that the corners of the fastener will be swept. In addition, if the corners of the fastener were previously swept or damaged, the positive coupling of the self-adjusting jaws along the opposite sides of the fastener will allow sufficient torque to be applied to effect the rotation of the fastener. Also, the self-adjusting jaw 1 illustrated in Figure 1 includes articulating portions 5, 6 that extend outwardly, each having an opening 7 to receive a respective articulation pin 15, 22 for pivotal mounting of the jaw self-adjusting associated jaw member. Self-adjusting jaws and articulation pins can be formed of any suitable material, including: metals such as steel and, preferably, can be formed from spring steel alloy having a hardness range of approximately 59 to 61 Rockwell C.

La Figura 3 de los dibujos ilustra otra modalidad de la herramienta de mano de acuerdo a la presente invención, que se forma con un par de pinzas de articulación móvil 25. En esta figura, los números de referencia se utilizan de manera consistente con los de la modalidad ilustrada en la Figura 2, las diferencias esenciales son que el cuerpo 26 de placa se forma para que tenga una expansión lateral mayor que en la Figura 2 a fin deFigure 3 of the drawings illustrates another embodiment of the hand tool according to the present invention, which is formed with a pair of movable clamps 25. In this figure, the reference numbers are used in a manner consistent with those of In the embodiment illustrated in Figure 2, the essential differences are that the plate body 26 is formed to have a greater lateral expansion than in Figure 2 in order to

"adaptar una serie extendida de muescas adyacentes 27."adapt an extended series of adjacent notches 27.

Por lo tanto, el pasador 23 puede colocarse en una muesca deseada para permitir que las mordazas autoajustables 16, 21 se adapten a los sujetadores que tienen una variedad de tamaños, mientras que se mantiene la distancia (D) entre los mangos 17, 9Therefore, the pin 23 may be placed in a desired notch to allow the self-adjusting jaws 16, 21 to fit the fasteners having a variety of sizes, while maintaining the distance (D) between the handles 17, 9

(como se muestra en la Figura 3) a un mínimo. Con este arreglo, la serie de muescas 27 permite que la herramienta 25 de articulación móvil se adapte a piezas de trabajo de mayor tamaño, como por ejemplo el perno 28 que se ilustra en la Figura 3.(as shown in Figure 3) to a minimum. With this arrangement, the series of notches 27 allows the mobile articulation tool 25 to be adapted to larger workpieces, such as the bolt 28 illustrated in Figure 3.

Otra modalidad de la herramienta de mano de cuerdo a esta invención se describirá a continuación con relación a las Figuras 4 a 7, que ilustran pinzas de articulación móvil 29. Esta modalidad incluye cuerpos de placa más grandes 26, 33, respectivamente en los lados derecho e izquierdo de los miembros alargados, cada cuerpo de placa tiene una serie alargada de muescas adyacentes 35, 36 que, en la posición ensamblada y funcional, se sobreponen e interconectan con un pasador suelto 37. Los extremos externos de los miembros alargados que forman las pinzas 29 de articulación móvil se proporcionan con miembros de mordaza convencionales 32, 34.Another embodiment of the hand tool according to this invention will be described below in relation to Figures 4 to 7, which illustrate mobile articulation pliers 29. This embodiment includes larger plate bodies 26, 33, respectively on the right sides. and left of the members elongated, each plate body has an elongated series of adjacent notches 35, 36 which, in the assembled and functional position, overlap and interconnect with a loose pin 37. The outer ends of the elongate members that form the movable joint clamps 29 they are provided with conventional jaw members 32, 34.

El pasador suelto 37 está ilustrado en las Figuras 5 y 6 y está configurado como un miembro de varilla 40 que tiene una sección transversal en forma de D (Figura 6) e incluye un extremo de tope 41 en un extremo de la varilla y una perilla moleteada 39 en el otro extremo de la varilla. Alternativamente, el pasador 37 puede estar provisto con un par de perillas muleteadas, cada una colocada en cada extremo de la varilla 40 (no se muestra) .Loose pin 37 is illustrated in Figures 5 and 6 and is configured as a rod member 40 that has a D-shaped cross section (Figure 6) and includes a stop end 41 at one end of the rod and a knob knurled 39 on the other end of the rod. Alternatively, the pin 37 may be provided with a pair of muted knobs, each placed at each end of the rod 40 (not shown).

El círculo 38 que se muestra en la Figura 4 ilustra una posición de la varilla 40 en la serie de muescas, a fin de proporcionar una conexión pivotal entre los miembros alargados respectivos que forman la herramienta 29. Con objeto de ajusfar la posición del mango 17, 9 y las respectivas mordazas 32, 34, el pasador suelto 37 se mueve a la muesca adecuada de la serie de muescas. Esto se logra sujetando manualmente la perilla moleteada 39 y haciendo girar el pasador 40, de manera que el lado plano de la varilla en forma de D quede alineado con la extensión longitudinal de la serie de muescas 36, para permitir el movimiento de la varilla 40 desde una muesca a otra, en la serie de muescas 35 o la serie de muescas 36 o en ambas series de muescas 35 y 36, en forma ya bien alternada o simultánea. Una vez que la varilla 40 está colocada en la muesca o muescas adecuadas, el perno moleteado 39 se hace girar a una posición que evita que éste salga de las muescas seleccionadas pero que permite el movimiento pivotal entre los miembros alargados. Es evidente que la serie de muescas alargadas 35, 36 y el pasador de cooperación ajustable 37, suelto, proporciona una mayor capacidad de ajuste a la abertura de la mordaza y permite que los mangos 9, 17 se conserven a una distancia mínima de separación entre ellos, mientras que se hace la adaptación de las piezas de trabajo o sujetadores de diversos tamaños entre las mordazas 32, 34. Esto permite que el usuario sujete y oprima fácilmente los mangos para aplicar la máxima fuerza de sujeción a la pieza de trabajo o sujetador. La Figura 7 es una vista en elevación lateral de la herramienta de mano de esta modalidad, en donde la serie de muescas 35, 36 alargadas y traslapantes están mostradas acopladas por el pasador de ajuste 37, suelto, en los extremos del mismo, lo - que proporciona la mayor distancia de abertura entre las mordazas.The circle 38 shown in Figure 4 illustrates a position of the rod 40 in the series of notches, in order to provide a pivotal connection between the respective elongate members that form the tool 29. In order to adjust the position of the handle 17 , 9 and the respective jaws 32, 34, the loose pin 37 moves to the appropriate notch of the series of notches. This is achieved by manually holding the knurled knob 39 and rotating the pin 40, so that the flat side of the D-shaped rod is aligned with the extension longitudinal of the series of notches 36, to allow the movement of the rod 40 from one notch to another, in the series of notches 35 or the series of notches 36 or in both series of notches 35 and 36, either alternately or simultaneous Once the rod 40 is positioned in the proper notch or notches, the knurled bolt 39 is rotated to a position that prevents it from leaving the selected notches but allows pivotal movement between the elongated members. It is evident that the series of elongated notches 35, 36 and the adjustable cooperation pin 37, loose, provides a greater ability to adjust to the jaw opening and allows the handles 9, 17 to be kept at a minimum distance of separation between them, while adapting work pieces or fasteners of various sizes between jaws 32, 34. This allows the user to easily hold and press the handles to apply maximum clamping force to the work piece or fastener . Figure 7 is a side elevation view of the hand tool of this embodiment, wherein the series of elongated and overlapping notches 35, 36 are shown coupled by the adjustment pin 37, loose, at the ends thereof, which - It provides the greatest opening distance between the jaws.

La Figura 8 ilustra una modalidad alternativa de las pinzas 42 de articulación móvil, similar a la mostrada en las Figuras 4 a 7. Sin embargo, esta modalidad incluye cuerpos de placa más grandes 45, 46 y mordazas izquierda y derecha 47, 48 más robustas, que están desplazadas en 53, 54, respectivamente, de manera que las mordazas 47, 48 están esencialmente opuestas entre sí. Las mordazas autoajustables 32, 34 están conectadas pivotalmente a los miembros de mordaza respectivos 47, 48 mediante pasadores 55, 56. Las mordazas autoajustables y los pasadores de articulación pueden formarse de cualquier material adecuado, entre los que se incluyen metal, por ejemplo acero, y de preferencia pueden formarse de aleación de acero de resorte que tiene un intervalo de dureza de aproximadamente 59 a 61 Rockwell C. Una vez más, el cuerpo de placa 45 está provisto con una serie de muescas 51 alargadas y el cuerpo de placa 46 tiene una serie de muecas 52 alargadas, que se traslapan entre sí en la posición de funcionamiento, los miembros alargados están interconectados pivotalmente mediante un pasador suelto 37 en la misma forma que se describe con relación a las Figuras 4 a 7. Por lo tanto, la herramienta de mano de acuerdo a esta modalidad puede adaptarse a una cabeza 57 de un sujetador de gran tamaño, de manera autoajustable, debido a la capacidad de ajuste que proporciona el pasador suelto 37 y a las series de muescas alargadas traslapantes, la separación d2 entre los mangos 17, 9 puede conservarse a un mínimo para proporcionar el mayor apalancamiento posible, así como para asegurar el acoplamiento del sujetador 57 mediante mordazas autoajustables.Figure 8 illustrates an embodiment alternative of the mobile articulation clamps 42, similar to that shown in Figures 4 to 7. However, this embodiment includes larger plate bodies 45, 46 and left and right jaws 47, 48 more robust, which are displaced in 53 , 54, respectively, so that the jaws 47, 48 are essentially opposite each other. The self-adjusting jaws 32, 34 are pivotally connected to the respective jaw members 47, 48 by pins 55, 56. The self-adjusting jaws and the articulation pins can be formed of any suitable material, including metal, for example steel, and preferably they can be formed of spring steel alloy having a hardness range of about 59 to 61 Rockwell C. Again, the plate body 45 is provided with a series of elongated notches 51 and the plate body 46 has a series of elongated faces 52, which overlap each other in the operating position, the elongate members are pivotally interconnected by a loose pin 37 in the same manner as described in relation to Figures 4 to 7. Therefore, the hand tool according to this modality can adapt to a head 57 of a large fastener, self-adjusting, due to the adjustment capacity that provides the loose pin 37 and to the series of overlapping elongated notches, the spacing d2 between the handles 17, 9 can be kept to a minimum to provide the greatest possible leverage, as well as to ensure the coupling of the fastener 57 by means of self-adjusting jaws.

La Figura 9 ilustra una herramienta de mano de acuerdo a la presente invención, configurada como herramienta de mano del tipo varilla de palanca, que generalmente se denomina pinzas de presión, bien conocidas en este campo. Por lo tanto, no se considera necesario explicar con detalle el funcionamiento de los arreglos de varilla de palanca ya conocidos y se hace referencia solamente a las porciones relevantes que incorporan características novedosas de acuerdo a la presente invención.Figure 9 illustrates a hand tool according to the present invention, configured as a hand tool of the lever rod type, which is generally referred to as pressure clamps, well known in this field. Therefore, it is not considered necessary to explain in detail the operation of the lever rod arrangements already known and reference is made only to the relevant portions incorporating novel features according to the present invention.

En consecuencia, las pinzas de presión 60 incluyen un primer mango 66 que tiene una mordaza fija 61 conectada rígidamente al mismo y una mordaza móvil 62 conectada pivotalmente al mango 66 mediante el pasador de pivote 63. La mordaza fija 61 y la mordaza móvil 62 tienen, cada una, mordazas autoajustables 43, 44 respectivamente, conectadas pivotalmente a las mismas por medio de pasadores de articulación 64, 65. Las mordazas autoajustables y los pasadores de articulación pueden ser de cualquier material adecuado, entre los que se incluyen: metales, como acero, y de preferencia aleación de acero de resorte que tiene un intervalo de dureza de 59 a 61 Rockwell C. Un mango móvil 69 está conectado pivotalmente a un extremo de la mordaza móvil 62 mediante un pasador de pivote 71, una varilla de palanca 68 está conectada pivotalmente en un extremo del pasador de articulación 70 en forma intermedia a los extremos del mango móvil 69 y está conectada funcionalmente al mango 66 por su otro extremo, de una forma convencional.Accordingly, the pressure pliers 60 include a first handle 66 having a fixed jaw 61 rigidly connected thereto and a movable jaw 62 pivotally connected to the handle 66 by the pivot pin 63. The fixed jaw 61 and the movable jaw 62 have , each, self-adjusting jaws 43, 44 respectively, pivotally connected thereto by means of articulation pins 64, 65. The self-adjusting jaws and articulation pins can be of any suitable material, including: metals, such as steel, and preferably spring steel alloy having a hardness range of 59 to 61 Rockwell C. A movable handle 69 is pivotally connected to one end of the movable jaw 62 by a pivot pin 71, a rod The lever 68 is pivotally connected at one end of the articulation pin 70 intermediate to the ends of the movable handle 69 and is functionally connected to the handle 66 at its other end, in a conventional manner.

El otro extremo del mango 66 está provisto con un tornillo de ajuste 67 para acoplarse con la varilla de palanca 68 y proporcionar la colocación ajustable entre la mordaza fija y la mordaza móvil, y el mango móvil 69 incluye una palanca de liberación 72 conectada pivotalmente al mismo mediante un pasador de pivote 73 para funcionar de la forma convencional. En consecuencia, las mordazas autoajustables 43, 44 se configuran para alinearse automáticamente con pares opuestos de los lados de una pieza de trabajo hexagonal, de la manera que se muestra para el sujetador 74 de la Figura 9. Este arreglo proporciona un acoplamiento más seguro por parte de las mordazas de las pinzas de presión a fin de permitir aplicar una fuerza de sujeción más firme al sujetador y permitir una aplicación más eficaz de la fuerza o par de torsión a un sujetador o una pieza de trabajo, lo que reduce la probabilidad de que las esquinas de los sujetadores se barran durante la aplicación del par de torsión. Además, mediante el uso de la característica de tornillo ajustable de las pinzas de presión 60, las pinzas autoajustables pueden colocarse adecuadamente para proporcionar la distancia adecuada entre las mordazas 61, 62, a fin de aplicar una fuerza de sujeción y una fuerza de par de torsión más eficaz. Adicionalmente, como se observa en la FiguraThe other end of the handle 66 is provided with an adjusting screw 67 to engage with the lever rod 68 and provide the adjustable placement between the fixed jaw and the movable jaw, and the mobile handle 69 includes a release lever 72 pivotally connected to the same by a pivot pin 73 to operate in the conventional manner. Accordingly, the self-adjusting jaws 43, 44 are configured to automatically align with opposite pairs of the sides of a hexagonal workpiece, in the manner shown for the fastener 74 of Figure 9. This arrangement provides a more secure coupling by part of the jaws of the pressure pliers in order to allow a firmer clamping force to be applied to the fastener and allow a more effective application of the force or torque to a fastener or a piece of work, which reduces the probability that the corners of the fasteners are swept during the application of the torque. In addition, by using the adjustable screw feature of the pressure pliers 60, the self-adjusting pliers can be properly positioned to provide adequate distance between the jaws 61, 62, in order to apply a clamping force and a torque force of torsion more effective. Additionally, as seen in Figure

10, el miembro de mordaza fijo 61 de las pinzas de presión 60 puede estar provisto con una ranura 75 que se extiende en forma longitudinal, que recibe al pasador de articulación 64 de la mordaza autoajustable 43. De esta manera, durante la operación de la pieza de trabado 60, el pasador de articulación 64 puede moverse en sentido lineal dentro de la ranura longitudinal 75, para proporcionar mejor alineamiento de los miembros de mordaza autoajustables 43, 44, para acoplarse en forma más exacta y completa con los pares opuestos de los lados del sujetador hexagonal que se pretende sujetar. La Figura 11 es una ilustración de la mordaza autoajustable 43 retirada de su aplicación a la mordaza fija 61.10, the fixed jaw member 61 of the pressure pliers 60 may be provided with a groove 75 that extends longitudinally, which receives the articulation pin 64 of the self-adjusting jaw 43. Thus, during the operation of the Locking piece 60, the articulation pin 64 can move linearly within the longitudinal groove 75, to provide better alignment of the self-adjusting jaw members 43, 44, to more accurately and completely engage with the opposite pairs of the sides of the hexagonal fastener to be fastened. Figure 11 is an illustration of the self-adjusting jaw 43 removed from its application to the fixed jaw 61.

La Figura 12 ilustra otra modalidad de las pinzas de presión 75, en donde los elementos que se parecen en la Figura 12 están representados con los mismos números de referencia correspondientes que se mencionaron en la Figura 9. En esta modalidad, la mordaza fija 61 y la mordaza móvil 62 tienen, cada una, bordes de corte respectivos 76, 77 para cortar una pieza de trabajo, por ejemplo un cable 78. El plano del movimiento pivotal de la mordaza móvil 62 está ligeramente desplazado del plano de la mordaza fija 61. Durante la operación de las pinzas de presión 75, a fin de cortar una pieza de trabajo, por ejemplo un cable 78, la operación de corte se efectúa en etapas sucesivas durante las cuales las mordazas móviles se cierran para acoplar y cortar una porción del cable 78, operando el mango 69, después de lo cual la mordaza móvil es liberada y el tornillo ajustable 67 se aprieta progresivamente después de cada movimiento de corte, de manera que las mordazas 61 y 62 se muevan progresivamente más cerca una de otra, hasta que la pieza de trabajo quede totalmente cortada. Además, las pinzas de presión 75 pueden utilizarse para cortar a través del forro aislante de los diversos tipos de alambres y cables eléctricos, o semejantes, a fin de pelar o quitar el forro aislante . Otra modalidad de las pinzas de presión se ilustra en la Figura 13, en donde un par de pinzas de presión 78 está configurado para operar con ambas manos. Las pinzas de presión 78 incluyen un mango fijo 82 que tiene una mordaza fija 79 conectada al mismo. Una porción de mango fijo 88 inferior recibe un tornillo de ajuste 89. El tornillo de ajuste 89 tiene una longitud extendida e incluye una porción roscada 90 y una porción no roscada 91. La mordaza móvil 80 está conectada pivotalmente al mango fijo 82 mediante un pasador de articulación 83, un mango móvil 84 está conectado pivotalmente tanto a la mordaza móvil 80 como a la varilla de palanca, en una forma convencional. El mango móvil 84 está desplazado en 85 para proporcionar una porción de mango 86 que puede moverse hacia arriba y una porción de mango 87 que puede moverse hacia abajo, que se extiende a un ángulo con respecto a la porción 86. Durante la operación de las pinzas de presión 78, el operador sujeta con una mano la porción inferior del mango fijo 88 y con la otra la porción inferior del mango móvil 87, para mover hacia delante y en alejamiento ambas opciones, provocando que la mordaza móvil 80 se mueva hacia delante y en alejamiento de la mordaza fija 79. Las mordazas fija y móvil 79 y 80 están provistas, cada una, con cuchillas rectas, a manera de tijeras, y sólo una de ellas se muestra en la mordaza móvil 80 en el número 81. Debido a la longitud extendida del mango fijo 82 y del mago móvil 84, y a la operación de los mismos con las dos manos, no se proporciona palanca de liberación puesto que no es necesaria. Las pinzas de presión 78 en particular se utilizan para cortar material muy grueso y relativamente duro, por ejemplo láminas de metal y lo semejante. La operación de corte de este tipo de material puede efectuarse por movimientos de corte sucesivos, con o sin cambio de posición del tornillo de ajuste 89.Figure 12 illustrates another embodiment of the pressure clamps 75, wherein the elements to be they appear in Figure 12 are represented with the same corresponding reference numbers as mentioned in Figure 9. In this embodiment, the fixed jaw 61 and the movable jaw 62 each have respective cutting edges 76, 77 to cut a workpiece, for example a cable 78. The plane of the pivotal movement of the movable jaw 62 is slightly offset from the plane of the fixed jaw 61. During the operation of the pressure pliers 75, in order to cut a workpiece, for example a cable 78, the cutting operation is carried out in successive stages during which the movable jaws are closed to couple and cut a portion of the cable 78, operating the handle 69, after which the movable jaw is released and the screw Adjustable 67 is tightened progressively after each cutting movement, so that jaws 61 and 62 move progressively closer to each other, until the workpiece is completely cut . In addition, the pressure pliers 75 can be used to cut through the insulating sheath of the various types of electric wires and cables, or the like, in order to strip or remove the insulating sheath. Another embodiment of the pressure clamps is illustrated in Figure 13, where a pair of pressure clamps 78 is configured to operate with both hands. The pressure pliers 78 include a fixed handle 82 having a fixed jaw 79 connected thereto. A lower fixed handle portion 88 receives an adjustment screw 89. The adjustment screw 89 has an extended length and includes a threaded portion 90 and an unthreaded portion 91. The movable jaw 80 is pivotally connected to the fixed handle 82 by a pin of articulation 83, a movable handle 84 is pivotally connected to both the movable jaw 80 and the lever rod, in a conventional manner. The movable handle 84 is displaced at 85 to provide a handle portion 86 that can be moved up and a handle portion 87 that can be moved down, which extends at an angle to the portion 86. During operation of the Pressure clamps 78, the operator holds with one hand the lower portion of the fixed handle 88 and with the other the lower portion of the mobile handle 87, to move both options forward and away, causing the movable jaw 80 to move forward and away from the fixed jaw 79. The fixed and mobile jaws 79 and 80 are each provided with straight blades, like scissors, and only one of them is shown in the mobile jaw 80 at number 81. Due to the extended length of the fixed handle 82 and the movable wizard 84, and their operation with both hands, no release lever is provided since it is not necessary. Pressure clamps 78 in particular are used to cut very thick and relatively hard material, for example metal sheets and the like. The cutting operation of this type of material can be carried out by successive cutting movements, with or without changing the position of the adjusting screw 89.

Una modalidad adicional de las pinzas de presión se utiliza en la Figura 14, donde se incorporan características adicionales de esta invención. En esta modalidad, un par de mordazas móviles 93, 94 están conectadas pivotalmente a un mango fijo 66 mediante los pasadores de articulación respectivos 101, 103. La mordaza móvil 93 incluye un segmento de engrane 102 que se engrana con un segmento de engranes 104 provisto en la mordaza móvil 94. Un mango móvil 69 está conectado pivotalmente a la mordaza móvil 94 y también a una varilla de palanca 68 que está conectada pivotalmente al mango móvil 69, por un extremo, y está conectada funcionalmente al mango fijo 66, por el otro, de manera que el movimiento del mango móvil 69 produce el movimiento del mango móvil 94 y, el engrane de los segmentos de engrane 102, 104 produce el movimiento conjunto de la mordaza móvil 93. En esta forma, puede observarse que la operación del mango móvil 69 hacia y en alejamiento del mango fijo 66 original el movimiento de las dos mordazas 93, 94 hacia delante y en alejamiento entre sí.An additional embodiment of the pressure clamps is used in Figure 14, where additional features of this invention are incorporated. In this embodiment, a pair of movable jaws 93, 94 are pivotally connected to a fixed handle 66 by the respective articulation pins 101, 103. The movable jaw 93 includes a gear segment 102 that engages with a gear segment 104 provided in the movable jaw 94. A movable handle 69 is pivotally connected to the movable jaw 94 and also to a lever rod 68 which is pivotally connected to the movable handle 69, at one end, and is functionally connected to the fixed handle 66, by the another, so that the movement of the mobile handle 69 produces the movement of the mobile handle 94 and, the engagement of the gear segments 102, 104 produces the joint movement of the mobile jaw 93. In this way, it can be seen that the operation of the mobile handle 69 towards and away from the original fixed handle 66 the movement of the two jaws 93, 94 forward and away from each other.

Las mordazas móviles 93, 94 están provistas con porciones desplazadas 95, 96, respectivamente en los extremos exteriores de las mordazas móviles se encuentran, respectivamente, una mordaza de autoajuste 16, 21. Las porciones desplazadas 95, 96 permiten el movimiento pivotal de las mordazas de autoajuste sin el acoplamiento de los bordes inferiores externos 97, 98 de las mordazas de autoajuste con los bordes 99, 100 dirigidos hacia dentro de las mordazas móviles. Las pinzas de presión de esta modalidad, debido al movimiento conjunto de las mordazas móviles 93 y 94 y al movimiento pivotal de las mordazas autoajustables 16, 21, permiten el ajuste preciso de la herramienta de trabado y el acoplamiento completo de las mordazas autoajustables con una pieza de trabajo hexagonal, por ejemplo 'un sujetador 105, para permitir la aplicación eficiente de una fuerza de sujeción y de una fuerza rotacional o par de torsión sobre dicho sujetador. Esta construcción origina una aplicación eficaz de la fuerza de sujeción y de un par de torsión hacia el sujetador, sin que se barran los bordes del mismo y también permiten la aplicación de un par de torsión a un sujetador que ya tiene los bordes barridos, debido al acoplamiento del par de superficies planas de mordaza con los lados adyacentes opuestos del sujetador.The movable jaws 93, 94 are provided with displaced portions 95, 96, respectively at the outer ends of the movable jaws are, respectively, a self-adjusting jaw 16, 21. The displaced portions 95, 96 allow the pivotal movement of the jaws of self-adjustment without the coupling of the outer lower edges 97, 98 of the self-adjusting jaws with the edges 99, 100 directed inwards of the movable jaws. The pressure clamps of this modality, due to the joint movement of the movable jaws 93 and 94 and the pivotal movement of the self-adjusting jaws 16, 21, allow the precise adjustment of the locking tool and the complete coupling of the self-adjusting jaws with a hexagonal workpiece, for example ' a fastener 105, to allow efficient application of a clamping force and a rotational force or torque on said fastener. This construction causes an effective application of the clamping force and a torque to the fastener, without the edges of the clamp being swept and also allowing the application of a torque to a fastener that already has the swept edges, due to the coupling of the pair of flat jaw surfaces with opposite adjacent sides of the fastener.

La Figura 15 ilustra una modificación de las pinzas de presión ilustradas en la Figura 14, donde los elementos que son correspondientes han conservado su mismo número de referencia. En esta modalidad, las mordazas móviles 106, 107 están conectadas pivotalmente a un miembro de mango fijo para el movimiento conjunto en la misma forma que se expone en la modalidad de la Figura 14. Las mordazas móviles incluyen porciones desplazadas 108, 109, respectivamente y, en general, porciones superiores rectas 110, 111. La mordaza móvil 106 está provista con una porción dentada 112 y la mordaza móvil 107 está provista con una porción dentada 113. Las porciones dentadas pueden tener una forma involuta inversa o cualquier otra forma de diente convencional. Las pinzas de presión de esta modalidad tienen porciones de mordaza dentadas que pueden utilizarse ventajosamente para la sujeción de pequeños sujetos entre las mismas.Figure 15 illustrates a modification of the pressure clamps illustrated in Figure 14, where the corresponding elements have retained their same reference number. In this embodiment, the movable jaws 106, 107 are pivotally connected to a fixed handle member for joint movement in the same manner as set forth in the mode of Figure 14. The movable jaws include displaced portions 108, 109, respectively and , in general, straight upper portions 110, 111. The movable jaw 106 is provided with a serrated portion 112 and the movable jaw 107 is provided with a serrated portion 113. The serrated portions may have an inverse or any other tooth shape. conventional. The pressure clamps of this modality have serrated jaw portions that can be advantageously used for holding small subjects between them.

La Figura 16 ilustra otra modalidad más de la herramienta de mano de acuerdo a la invención y en particular de unas pinzas de presión 114 que tienen mordazas izquierda y derecha simétricas 115, 116, que están conectadas pivotalmente a un mango central 119 mediante un pasador de pivote 127. El mango izquierdo 117 está conectado pivotalmente a la mordaza izquierda 115 y una varilla de palanca 120 está conectada pivotalmente a un extremo del mango izquierdo 117 y está conectada operativamente al otro extremo del mango central 119. Un mango derecho 118 está conectado pivotalmente a la mordaza derecha 116 y una varilla de palanca 121 está conectada pivotalmente, por un extremo, al mango derecho 118 y está conectada funcionalmente , por el otro extremo, al mango central 119. Los resortes laterales 124, 125 están conectados respectivamente, en los primeros extremos, a las mordazas respectivas izquierda y derecha 115, 116 y sus extremos opuestos a un pasador 126. Las mordazas izquierda y derecha 115, 116 están provistas, cada una, con porciones desplazadas 128, 129, respectivamente, de manera que los extremos externos de las mordazas respectivas estén diametralmente opuestos. La mordaza izquierda 115 tiene en su extremo superior una mordaza autoajustable 16 que está conectada pivotalmente a la misma mediante un pasador de pivote 15, y el extremo superior de la mordaza derecha 116 tiene una mordaza autoajustable 2.1 conectada pivotalmente a la misma mediante un pasador 22. Las porciones desplazadas 128 y 129 permiten que las mordazas autoajustables 16, 21 se muevan esencialmente en el mismo plano de movimiento. Un tornillo de ajuste 49 está provisto en el extremo exterior del mango central 119 para ajusfar las varillas de palanca en la forma normal, y los extremo exteriores de los mangos 117, 118 tienen respectivamente palancas de liberación 122, 123 que funcionan de la manera típica. Esta configuración de pinzas de presión proporciona un movimiento conjunto y uniforme de las mordazas 15, 16 durante la operación de los mangos 117, 118 y las mordazas autoajustables 16, 21 se colocan de manera simétrica alrededor de la pieza de trabajo o del sujetador hexagonal 17 para permitir que se aplique una fuerza de sujeción o una fuerza de rotación o par de torsión de manera eficaz. Los detalles de la conexión de las varillas de palanca 120, 121 con el mango central 119 se muestran en las Figuras 17 y 18. Haciendo referencia a la Figura 17, que ilustra una sección transversal horizontal del mango central 119, puede observarse que mango central 119 se forma con un par de placas separadas 119a, 119b, que están curvadas hacia fuera y están opuestas en la región central de las mismas, para proporcionar una guía longitudinal para los extremos de las varillas de palanca 120, 121. La varilla de palanca 120 está provista, por uno de sus extremos, con un par de piezas semiesfericas 130 colocadas en lados opuestos, y la varilla de palanca 121 tiene, en uno de sus extremos, un par de piezas semiesfericas 131, también colocadas en lados opuestos de la misma, como puede observarse en la Figura 17. En esta misma Figura puede observarse que el par de placas curvadas 119a; 119b que forman el mango central 119, proporcionan un par de lados abiertos 132, 133, a través de los cuales se extienden las varillas de palanca 120, 121 y las piezas semiesfericas 130, 131 restringen a las varillas de palanca para que sólo se desplacen longitudinalmente dentro del mango central y pivoten con respecto al mismo, sin embargo evitando que los extremos de las varillas de palanca se. muevan en sentido lateral a través de los lados abiertos 132, 133 del mango central.Figure 16 illustrates yet another embodiment of the hand tool according to the invention and in particular of pressure pliers 114 having symmetrical left and right jaws 115, 116, which are pivotally connected to a central handle 119 by a pivot pin 127. The left handle 117 is pivotally connected to the left jaw 115 and a lever rod 120 is pivotally connected to one end of the left handle 117 and is operatively connected to the other end of the central handle 119. A right handle 118 is pivotally connected to the right jaw 116 and a lever rod 121 is pivotally connected, at one end, to the right handle 118 and is functionally connected, at the other end, to the central handle 119. The side springs 124, 125 are connected respectively, at the first ends, to the respective left and right jaws 115, 116 and their opposite ends to a pin 126. The left and right jaws 115, 116 are each provided with offset portions 128, 129, respectively, of so that the outer ends of the respective jaws are diametrically opposed. The left jaw 115 has at its upper end a self-adjusting jaw 16 which is pivotally connected thereto by a pivot pin 15, and the upper end of the right jaw 116 has a self-adjusting jaw 2.1 pivotally connected thereto by a pin 22 The displaced portions 128 and 129 allow the self-adjusting jaws 16, 21 to move essentially in the same plane of movement. An adjusting screw 49 is provided at the outer end of the central handle 119 to adjust the lever rods in the normal manner, and the outer ends of the handles 117, 118 respectively have release levers 122, 123 that function in the typical manner. . This pressure clamp configuration provides a uniform and uniform movement of the jaws 15, 16 during the operation of the handles 117, 118 and the self-adjusting jaws 16, 21 are placed symmetrically around the workpiece or the hexagonal fastener 17 to allow a clamping force or a rotational force or torque to be applied effectively. The details of the connection of the lever rods 120, 121 with the central handle 119 are shown in Figures 17 and 18. Referring to Figure 17, which illustrates a horizontal cross-section of the central handle 119, it can be seen that central handle 119 is formed with a pair of separate plates 119a, 119b, which are curved outwardly and are opposite in the central region thereof, to provide a longitudinal guide for the ends of the lever rods 120, 121. The lever rod 120 is provided, at one of its ends, with a pair of hemispherical pieces 130 placed on opposite sides, and the lever rod 121 has, at one of its ends, a pair of hemispherical pieces 131, also placed on opposite sides thereof, as can be seen in Figure 17. In this same Figure it can be seen that the pair of curved plates 119a; 119b forming the central handle 119, provide a pair of open sides 132, 133, through which the lever rods 120, 121 and the semi-spherical parts 130, 131 extend to the lever rods so that they only move longitudinally within the central handle and pivot with respect thereto, however preventing the ends of the lever rods from being . move laterally through the open sides 132, 133 of the central handle.

Regresando a la Figura 18, puede observarse que el extremo más inferior del mango central 119 está formado con una porción roscada hembra que recibe al tornillo de ajuste 49. Los extremos de las varillas de palanca 120, 121 topan con la parte superior plana del tornillo de ajuste 49 y son empujados hasta esta posición por los resortes 124, 125. Puede observase que el ajuste de los tornillos de ajuste 49 permite que las pinzas de presión se adapten a las cabezas de los sujetadores que tienen varios tamaños, de manera de efectuar la fuerza de pinza deseada sobre la cabeza del sujetador. Las Figuras 19 y 20 ilustran una modificación de la conexión de las varillas de palanca dentro del mango central 119. En esta modalidad, los extremos de las varillas de palanca 120, 121 están interconectados pivotalmente por un pasador de pivote 134, que se forma con las cabezas semiesfericas 135, 136 en los extremos opuestos de las mismas. En esta forma, las cabezas semiesfericas restringen a los extremos de las varillas de palanca sólo a un movimiento longitudinal y pivotal con respecto al mango central 119, mientras que se evita el movimiento lateral de los extremos de varilla de palanca fuera de los lados abiertos. Como puede observarse en la Figura 19, los extremos pivotalmente interconectados de las varillas de palanca 120, 121 topan con la superficie superior plana del tornillo de ajuste 49 y son empujados para acoplarse con los resortes 124, 125 (Figura 16).Returning to Figure 18, it can be seen that the lower end of the central handle 119 is formed with a female threaded portion that receives the adjustment screw 49. The ends of the lever rods 120, 121 run into the flat top of the screw adjustment 49 and are pushed to this position by the springs 124, 125. It can be seen that the adjustment of the adjustment screws 49 allows the clamps to be adapted to the heads of the fasteners having various sizes, in order to effect the desired clamp force on the head of the fastener. Figures 19 and 20 illustrate a modification of the connection of the lever rods within the central handle 119. In this embodiment, the ends of the lever rods 120, 121 are pivotally interconnected by a pivot pin 134, which is formed with the hemispherical heads 135, 136 at the opposite ends thereof. In this way, the hemispherical heads restrict the ends of the lever rods only to a longitudinal and pivotal movement with respect to the central handle 119, while preventing lateral movement of the lever rod ends outside the open sides. As can be seen in Figure 19, the pivotally interconnected ends of the lever rods 120, 121 run into the flat upper surface of the adjustment screw 49 and are pushed to engage the springs 124, 125 (Figure 16).

La Figura 21 ilustra una modalidad alternativa de las pinzas de presión mostradas en la Figura 16. Este par de pinzas de presión 139 es similar al que se ilustra en la Figura 16, excepto que los mangos izquierdo y derecho 140, 141 son más largos y se extienden hacia fuera, más allá del extremo externo del mango central 119. Además, los extremos inferiores 142, 143 de los mangos izquierdo y derecho respectivos divergen hacia fuera en un ángulo obtuso respecto a las porciones superiores 144, 145. La mayor longitud de los mangos 140, 141 permite la operación de las pinzas de presión 139 con las dos manos, y proporciona una ventaja mecánica mayor. Por lo tanto, la porción de sujeción inferior 142 puede sujetarse con una mano y la porción de sujeción inferior 143 con la otra, para proporcionar el movimiento de los mangos en direcciones opuestas y hacer operar las mordazas autoajustables 16, 21 para acoplar una pieza de trabajo, por ejemplo la cabeza de un sujetador 17. Por lo tanto, la mayor longitud de los mangos no sólo proporciona un aumento significativo en la ventaja mecánica de las pinzas de presión 139, sino que también elimina la necesidad de palancas de liberación. Las pinzas de presión 139 incluyen también mordazas autoajustables 16, 21 como se describe con relación a la Figura 16.Figure 21 illustrates an alternative embodiment of the pressure clamps shown in Figure 16. This pair of pressure clamps 139 is similar to that illustrated in Figure 16, except that the left and right handles 140, 141 are longer and they extend outward, beyond the outer end of the central handle 119. In addition, the lower ends 142, 143 of the respective left and right handles diverge outward in a obtuse angle with respect to the upper portions 144, 145. The greater length of the handles 140, 141 allows the operation of the pressure clamps 139 with both hands, and provides a greater mechanical advantage. Therefore, the lower holding portion 142 can be held with one hand and the lower holding portion 143 with the other, to provide movement of the handles in opposite directions and to operate the self-adjusting jaws 16, 21 to engage a piece of work, for example the head of a fastener 17. Therefore, the greater length of the handles not only provides a significant increase in the mechanical advantage of the pressure tongs 139, but also eliminates the need for release levers. Pressure pliers 139 also include self-adjusting jaws 16, 21 as described in relation to Figure 16.

La Figura 22 muestra un arreglo alternativo adicional de las pinzas de presión ilustradas en la Figura 16. En esta modalidad, las pinzas de presión 146 tienen un mango central y mangos izquierdo y derecho como se describen en la Figura 16. Las pinzas de presión 146 también se proporcionan con un par de mordazas 147, 148, cada una incluye porciones de cuchilla lineales. Las mordazas 147, 148 están interconectadas pivotalmente al mango central mediante un pivote común, en 149, para movimiento hacia delante y en alejamiento una de otra. Las porciones de cuchilla lineal de las mordazas 147, 148 se utilizan para cortar alambres, cables y lo semejante, por ejemplo el cable 150. La Figura 23 muestra un par de pinzas de presión 151 similares a las ilustradas en la Figura 16, pero en este caso se proporcionan con un par de mordazas curvadas arqueadamente 152, 153. Las superficies internas de las mordazas curvadas están provistas con porciones dentadas para permitir una firme sujeción de las piezas de trabajo que tienen secciones transversales generalmente circulares, como por ejemplo el tubo 154.Figure 22 shows a further alternative arrangement of the pressure pliers illustrated in Figure 16. In this embodiment, the pressure pliers 146 have a central handle and left and right handles as described in Figure 16. Pressure pliers 146 They are also provided with a pair of jaws 147, 148, each including linear blade portions. The jaws 147, 148 are pivotally interconnected to the central handle by a common pivot, at 149, for movement forward and away from each other. The linear blade portions of the jaws 147, 148 are used to cut wires, cables and the like, for example cable 150. Figure 23 shows a pair of pressure pliers 151 similar to those illustrated in Figure 16, but in this case is provided with a pair of arcuately curved jaws 152, 153. The internal surfaces of the curved jaws are provided with serrated portions to allow a firm hold of the work pieces having generally circular cross sections, such as tube 154 .

Aunque la invención se ha descrito con relación a los medios, materiales y modalidades particulares, deberá entenderse que la misma no está limitada a las características expuestas aquí y se extiende a todas las equivalencias que queden dentro del alcance de las reivindicaciones. Although the invention has been described in relation to the particular means, materials and modalities, it should be understood that it is not limited to the features set forth herein and extends to all equivalences that are within the scope of the claims.

Claims

REIVINDICACIONES : CLAIMS: 1. Una herramienta de mano que comprende: por lo menos dos miembros alargados interconectados pivotalmente mediante una articulación de pivote para proporcionar un par de mangos y un par de miembros de mordaza; cada miembro de mordaza incluye una mordaza autoajustable conectada pivotalmente al mismo; cada mordaza autoa ustable está configurada en forma angular, con lo cual la operación de los mangos produce el acoplamiento a una pieza de trabajo de múltiples lados mediante las mordazas angulares, para permitir que se imparta una fuerza o par de torsión a la pieza de trabajo. 1. A hand tool comprising: at least two elongated members pivotally interconnected by a pivot joint to provide a pair of handles and a pair of jaw members; each jaw member includes a self-adjusting jaw pivotally connected thereto; each usable self-clamping jaw is angularly configured, whereby the operation of the handles produces the coupling to a multi-sided workpiece by means of the angular jaws, to allow a force or torque to be imparted to the workpiece . 2. Una herramienta de mano según la reivindicación 1, en donde cada mordaza angular comprende un par de porciones de mordaza plana colocadas a un ángulo de 120° y configuradas para acoplarse con dos lados adyacentes de un sujetador hexagonal.2. A hand tool according to claim 1, wherein each angular jaw comprises a pair of flat jaw portions positioned at an angle of 120 ° and configured to engage with two adjacent sides of a hexagonal fastener. 3. Una herramienta de mano según la reivindicación 2, en donde la articulación de pivote está configurada como una articulación móvil.3. A hand tool according to claim 2, wherein the pivot joint is configured as a movable joint. 4. Una herramienta de mano según la reivindicación 3, en donde la articulación de pivote comprende una ranura formada en por lo menos uno de los miembros alargados, la ranura tiene por lo menos dos muescas de ajuste en la misma y un pasador está montado en el otro de los miembros alargados; el pasador es móvil dentro de la ranura para moverse de una muesca de ajuste a otra, permitiendo así el ajuste de la separación de las mordazas para adaptarse a los diferentes tamaños de sujetadores.4. A hand tool according to claim 3, wherein the pivot joint comprises a groove formed in at least one of the elongate members, the groove has at least two adjustment notches on it and one pin is mounted on the other of the elongated members; The pin is movable within the groove to move from one adjustment notch to another, thus allowing adjustment of the jaw spacing to adapt to the different sizes of fasteners. 5. Una herramienta de mano según la reivindicación 4, en donde la ranura se proporciona con más de dos muescas de ajuste para permitir mayor capacidad de ajuste a la herramienta de mano.5. A hand tool according to claim 4, wherein the groove is provided with more than two adjustment notches to allow greater capacity of adjustment to the hand tool. 6. Una herramienta de mano según la reivindicación 4, que además comprende una segunda ranura formada, en el otro de los miembros alargados, la segunda ranura tiene por lo menos dos muescas de ajuste y el pasador está montado giratoriamente y está configurado para tener una sección transversal en forma de D, el pasador es giratorio para poder alinear un lado plano de la forma en D con una dimensión longitudinal de cada ranura, a fin de permitir el movimiento deslizante entre los miembros alargados y proporcionar el ajuste y la posición de un lado curvado del pasador dentro de las muescas respectivas, con lo que el movimiento pivotante relativo de los mangos alargados permite la operación de la herramienta de mano.6. A hand tool according to claim 4, further comprising a second groove formed, on the other of the elongate members, the second groove has at least two adjustment notches and the pin is rotatably mounted and is configured to have a D-shaped cross section, the pin is rotatable to be able to align a flat side of the D-shape with a longitudinal dimension of each groove, in order to allow sliding movement between the elongated members and provide the adjustment and position of a curved side of the pin within the respective notches, whereby the relative pivoting movement of the elongated handles allows the operation of the hand tool. 7. Una herramienta de mano según la reivindicación 6, que además comprende una cabeza en uno de los extremos del pasador y una perilla moleteada en el otro extremo, la perilla moleteada facilita la rotación del pasador hasta una posición deseada . 7. A hand tool according to claim 6, further comprising a head in one of the ends of the pin and a knurled knob on the other end, the knurled knob facilitates the rotation of the pin to a desired position. 8. Una herramienta de mano según la reivindicación 7, en donde cada ranura está provista con más de dos muescas de ajuste para permitir mayor capacidad de ajuste en la herramienta de mano.8. A hand tool according to claim 7, wherein each slot is provided with more than two adjustment notches to allow greater adjustment capacity in the hand tool. 9. Una herramienta de mano que comprende: por lo menos dos miembros alargados interconectados pivotalmente por una articulación de pivote para proporcionar un par de mangos y un par de miembros de mordaza cooperantes; la articulación de pivote se forma proporcionando una ranura en cada uno de los miembros alargados, cada ranura incluye por lo menos dos muescas de ajuste y un pasador colocado dentro de la ranura; el pasador está montado giratoriamente y está configurado para tener una sección transversal en forma de D;' en donde el pasador es giratorio para poder alinear un lado plano de la D con una dimensión longitudinal de cada una de las ranuras, a fin de permitir un movimiento deslizante mutuo de los miembros alargados, a fin de proporcionar el ajuste y la colocación del lado- curvado del pasador dentro de los muescas respectivas, con lo que se permite el movimiento pivotante relativo de los mangos alargados y, consecuentemente, la operación de la herramienta de mano .9. A hand tool comprising: at least two elongated members pivotally interconnected by a pivot joint to provide a pair of handles and a pair of cooperating jaw members; The pivot joint is formed by providing a groove in each of the elongate members, each groove includes at least two adjustment notches and a pin positioned within the groove; the pin is rotatably mounted and is configured to have a D-shaped cross section; wherein the pin is rotatable to be able to align a flat side of the D with a longitudinal dimension of each of the grooves, in order to allow a mutual sliding movement of the elongated members, in order to provide adjustment and placement of the side - bending of the pin within the respective notches, which allows the relative pivoting movement of the elongated handles and, consequently, the operation of the hand tool. 10. Una herramienta de mano según la reivindicación 9, que además comprende una cabeza en un extremo del pasador y una perilla moleteada en el otro extremo, la perilla moleteada facilita la rotación del pasador hacia una posición deseada.10. A hand tool according to claim 9, further comprising a head at one end of the pin and a knurled knob at the other end, the knurled knob facilitates rotation of the pin to a desired position. 11. Una herramienta de mano según la reivindicación 10, en donde cada ranura está provista con más de dos muescas de ajuste para permitir mayor capacidad de ajuste a la herramienta de mano.11. A hand tool according to claim 10, wherein each slot is provided with more than two adjustment notches to allow greater capacity of adjustment to the hand tool. 12. Una herramienta de mano según la reivindicación 9, que además comprende una mordaza autoajustable de forma angular, montada pivotalmente a cada uno de los miembros alargados, para el acoplamiento de una pieza de trabajo de múltiples lados .12. A hand tool according to claim 9, further comprising a self-adjusting angular jaw, pivotally mounted to each of the elongate members, for coupling a multi-sided workpiece. 13. Una herramienta de mano según la reivindicación 12, en donde cada mordaza de forma angular comprende un par de porciones de mordaza plana colocadas en un ángulo de 120° y está configurada para acoplarse con dos lados adyacentes de un sujetador hexagonal. 13. A hand tool according to claim 12, wherein each angularly shaped jaw comprises a pair of flat jaw portions positioned at a 120 ° angle and is configured to engage with two adjacent sides of a hexagonal fastener. 14. Una herramienta de mano del tipo varillaje de palanca que comprende: elementos interconectados pivotalmente que tienen miembros de acoplamiento a la pieza de trabajo, un par de mangos, cada mango está conectado funcionalmente a un respectivo elemento, y una varilla de palanca conectada operativamente entre los mangos; en donde el miembro de acoplamiento a la pieza de trabajo incluye una mordaza autoajustable que está conectada pivotalmente al mismo, cada mordaza está configurada para tener una forma angular acoplarse con dos lados adyacentes de un sujetador hexagonal .14. A hand tool of the lever linkage type comprising: pivotally interconnected elements having members of coupling to the workpiece, a pair of handles, each handle is functionally connected to a respective element, and a lever rod operatively connected between the handles; wherein the workpiece coupling member includes a self-adjusting jaw that is pivotally connected thereto, each jaw is configured to have an angular shape engaging with two adjacent sides of a hexagonal fastener. 15. La herramienta de mano del tipo varillaje de palanca según la reivindicación 14, en donde la conexión pivotable de por lo menos una mordaza con un respectivo miembro de acoplamiento a la pieza de trabajo se proporciona mediante una ranura formada en una de las mordazas o en el miembro, y un pasador está fijado a la mordaza o al miembro que no lleva la ranura, mediante lo cual la mordaza puede moverse en sentido longitudinal con respecto al respectivo miembro de acoplamiento a la pieza de trabajo, proporcionando así mayor capacidad de ajuste a las mordazas.15. The hand tool of the lever linkage type according to claim 14, wherein the pivotable connection of at least one jaw with a respective coupling member to the workpiece is provided by a groove formed in one of the jaws or in the member, and a pin is fixed to the jaw or to the member that does not carry the groove, whereby the jaw can move longitudinally with respect to the respective coupling member to the workpiece, thereby providing greater adjustability to the jaws. 16. Una herramienta de mano del tipo varillaje de palanca que comprende elementos interconectados pivo'talmente que tienen miembros de acoplamiento a la pieza de trabajo, un par de mangos, cada mango está conectado funcionalmente a un elemento respectivo, y una varilla de palanca conectada funcionalmente entre los mangos, en donde cada miembro de acoplamiento a la pieza de trabajo está configurado para tener una superficie de corte.16. A hand tool of the lever linkage type comprising pivo'tal interconnected elements having coupling members to the workpiece, a pair of handles, each handle is functionally connected to a respective element, and a lever rod functionally connected between the handles, where each coupling member to the workpiece is configured to have a cutting surface. 17. La herramienta de mano del tipo varillaje de palanca según la reivindicación 16, en donde las superficies de corte están configuradas como cuchillas rectas. 17. The hand tool of the lever linkage type according to claim 16, wherein the cutting surfaces are configured as straight blades. 18. La herramienta de mano del tipo varillaje de palanca según la reivindicación 16, en donde las superficies de corte están configuradas como superficies de corte curvadas para facilitar el corte de los miembros circulares. 18. The hand tool of the lever linkage type according to claim 16, wherein the cutting surfaces are configured as curved cutting surfaces to facilitate cutting of the circular members. 19. Una herramienta de mano del tipo varillaje de palanca que comprende primero y segundo elementos alargados, un par de miembros de acoplamiento a la pieza de trabajo conectados pivotalmente al primer elemento alargado; el segundo elemento alargado forma un mango conectado pivotalmente a uno de los miembros de acoplamiento a la pieza de trabajo; una primera varilla de palanca está interconectada funcionalmente entre el primero y segundo elementos alargados, y un mecanismo de accionamiento para el otro de los miembros de acoplamiento a la pieza de trabajo; mediante lo cual la manipulación del mango y la operación del mecanismo de accionamiento producen que los miembros de acoplamiento a la pieza de trabajo se muevan hacia delante y en alejamiento entre sí.19. A hand tool of the lever linkage type comprising first and second elongate elements, a pair of coupling members to the workpiece pivotally connected to the first elongate element; the second elongate element forms a handle pivotally connected to one of the coupling members to the workpiece; a first lever rod is functionally interconnected between the first and second elongate elements, and a drive mechanism for the other of the coupling members to the workpiece; whereby the manipulation of the handle and the operation of the drive mechanism cause the coupling members to the workpiece to move forward and away from each other. 20. La herramienta de mano del tipo varillaje de palanca según la reivindicación 19, en donde el mecanismo de accionamiento comprende un mecanismo de cooperación que interconecta operativamente al par de miembros de acoplamiento a la pieza de trabajo para un movimiento conjunto. 20. The hand tool of the lever linkage type according to claim 19, wherein the drive mechanism comprises a cooperation mechanism that operatively interconnects the pair of coupling members to the workpiece for joint movement. 21. La herramienta de mano del tipo varillaje de palanca según la reivindicación 20, en donde el mecanismo de cooperación comprende un segmento de engranaje formado en cada lado de los miembros de acoplamiento a la pieza de trabajo, los segmentos de engranaje engranan entre sí de manera que^ el movimiento de uno de los miembros de acoplamiento a la pieza de trabajo, por la operación del mango, se transmita al otro miembro de acoplamiento a la pieza de trabajo para el accionamiento del mismo.21. The hand tool of the lever linkage type according to claim 20, wherein the cooperation mechanism comprises a gear segment formed on each side of the coupling members to the workpiece, the gear segments engage each other in ^ so that movement of one of the coupling members to the workpiece by operation of the handle is transmitted to the other coupling member to the workpiece for driving it. 22. La herramienta de mano del tipo varillaje de palanca según la reivindicación 21, en donde cada miembro de acoplamiento a la pieza de trabajo comprende además una mordaza autoajustable que está conectada pivotalmente al mismo.22. The hand tool of the lever linkage type according to claim 21, wherein each coupling member to the workpiece further comprises a self-adjusting jaw that is pivotally connected thereto. 23. La herramienta de mano del tipo varillaje de palanca según la reivindicación 22, en donde cada mordaza está configurada para tener una forma angular para su acoplamiento con dos lados de un sujetador hexagonal.23. The hand tool of the lever linkage type according to claim 22, in where each jaw is configured to have an angular shape for coupling with two sides of a hexagonal fastener. 24. La herramienta de mano del tipo varillaje de palanca según la reivindicación 21, en donde los miembros de acoplamiento a la pieza de trabajo están provistos con segmentos dentados para proporcionar una sujeción firme sobre las piezas de trabajo que se van a sujetar. 24. The hand tool of the lever linkage type according to claim 21, wherein the coupling members to the workpiece are provided with toothed segments to provide a firm hold on the workpieces to be held. 25. La herramienta de mano del tipo varillaje de palanca según la reivindicación 19-, en donde el mecanismo de accionamiento comprende un tercer elemento alargado que forma un segundo mango conectado pivotalmente al otro miembro de acoplamiento a la pieza de trabajo y una segunda varilla de palanca conectada funcionalmente entre el primero y el tercer elementos alargados.25. The hand tool of the lever linkage type according to claim 19-, wherein the drive mechanism comprises a third elongate member forming a second handle pivotally connected to the other coupling member to the workpiece and a second rod Lever functionally connected between the first and third elongated elements. 26. La herramienta de mano del tipo varillaje de palanca según la reivindicación 25, en donde la primera y la segunda varillas de palanca están conectadas pivotalmente, en un primer extremo, al segundo y al tercer elementos alargados, y cada una está conectada funcionalmente, en un segundo extremo, al primer miembro alargado, para movimiento pivotal y longitudinal respecto al mismo.26. The hand tool of the lever linkage type according to claim 25, wherein the first and second lever rods are pivotally connected, at a first end, to the second and third elongated elements, and each is functionally connected, at a second end, to the first elongated member, for pivotal and longitudinal movement with respect thereto. 27. La herramienta de mano del tipo varillaje de palanca según la reivindicación 26, en donde el primer elemento se forma por un par de placas separadas, curvadas hacia fuera, que forman un pasaje alargado, en donde los segundos extremos de las varillas de palanca pueden moverse en sentido pivotal y longitudinal.27. The hand tool of the lever linkage type according to claim 26, in where the first element is formed by a pair of separate plates, curved outwards, that form an elongated passage, where the second ends of the lever rods can move in a pivotal and longitudinal direction. 28. La herramienta de mano del tipo varillaje de palanca según la reivindicación 27, en donde los segundos extremos de las varillas de palanca están provistos, cada uno, con dos miembros semiesféricos en los- lados opuestos de los mismos, para restringir a los segundos extremos solamente al movimiento pivotal y longitudinal dentro del pasaje.28. The hand tool of the lever linkage type according to claim 27, wherein the second ends of the lever rods are each provided with two hemispherical members on opposite sides thereof, to restrict the second ends only to the pivotal and longitudinal movement within the passage. 29. La herramienta de mano del tipo varillaje de palanca según la reivindicación 28, que comprende además un miembro de ajuste sobre el primer elemento para su acoplamiento con los segundos extremos de las varillas de palanca, proporcionando así capacidad de ajuste a los miembros de acoplamiento a la pieza de trabajo. 29. The hand tool of the lever linkage type according to claim 28, further comprising an adjustment member on the first element for engagement with the second ends of the lever rods, thus providing adjustment ability to the coupling members to the work piece. 30. La herramienta de mano del tipo varillaje de palanca según la reivindicación 29, en donde los miembros de ajuste comprenden un miembro de tornillo roscado, acoplado roscadamente a un extremo externo del primer elemento, y un extremo del miembro de tornillo roscado se acopla con los segundos extremos de las varillas de palanca.The hand tool of the lever linkage type according to claim 29, wherein the adjustment members comprise a threaded screw member, threadedly coupled to an outer end of the first element, and an end of the threaded screw member is coupled with the second ends of the lever rods. 31. La herramienta de mano del tipo varillaje de palanca según la reivindicación 27, en donde los segundos extremos de las varillas de palanca están interconectados pivotalmente.31. The type hand tool lever linkage according to claim 27, wherein the second ends of the lever rods are pivotally interconnected. 32. La herramienta de mano del tipo varillaje de palanca según la reivindicación 31, que además comprende dos miembros semi-esféricos provistos en lados opuestos de los segundos extremos de las varillas de palanca, para restringir a los segundos extremos únicamente al movimiento pívotal y longitudinal dentro del pasaje.32. The hand tool of the lever linkage type according to claim 31, further comprising two semi-spherical members provided on opposite sides of the second ends of the lever rods, to restrict the second ends only to pivotal and longitudinal movement. Inside the passage 33. La herramienta de mano del tipo varillaje de palanca según la reivindicación 32, que además comprende un miembro de ajuste en el primer elemento para el acoplamiento por los segundos extremos de las varillas de palanca, proporcionando capacidad de ajuste para los miembros de acoplamiento a la pieza de trabajo.33. The hand tool of the lever linkage type according to claim 32, further comprising an adjustment member in the first element for coupling by the second ends of the lever rods, providing adjustment capacity for the coupling members a The work piece. 34. La herramienta de mano del tipo varillaje de palanca según la reivindicación 33, en donde el miembro de ajuste comprende un miembro de tornillo roscado acoplado roscadamente a un extremo externo del primer elemento, y un extremo del miembro de tornillo roscado se acopla con los segundos extremos de las varillas de palanca. 34. The hand tool of the lever linkage type according to claim 33, wherein the adjusting member comprises a threaded screw member threadedly coupled to an outer end of the first element, and an end of the threaded screw member is coupled with the second ends of the lever rods. 35. La herramienta de mano del tipo varillaje de palanca según la reivindicación 25, en donde el segundo y el tercer elementos alargados son más largos que el extremo externo del primer elemento alargado y se extienden hacia fuera y más allá del mismo, con el fin de aumentar el apalancamiento de la herramienta de mano y permitir la operación con .las dos manos, para eliminar la necesidad de una palanca de liberación.35. The hand tool of the lever linkage type according to claim 25, wherein the second and third elongate elements are longer than the outer end of the first elongate element and extend outwardly and beyond it, in order to increase the leverage of the hand tool and allow operation with both hands, to eliminate the need for a lever of release. 36. La herramienta de mano del tipo varillaje de palanca según la reivindicación 25, en donde cada miembro de acoplamiento a la pieza de trabajo incluye una mordaza autoajustable conectada pivotalmente al mismo.36. The hand tool of the lever linkage type according to claim 25, wherein each coupling member to the workpiece includes a self-adjusting jaw pivotally connected thereto. 37. La herramienta de mano del tipo varillaje de palanca según la reivindicación 36, en donde cada mordaza está configurada para tener una forma angular, para su acoplamiento con dos lados adyacentes de un sujetador hexagonal.37. The hand tool of the lever linkage type according to claim 36, wherein each jaw is configured to have an angular shape, for coupling with two adjacent sides of a hexagonal fastener. 38. La herramienta de mano del tipo varillaje de palanca según la reivindicación 27, en donde cada uno de los miembros de acoplamiento a la pieza de trabajo incluye una mordaza autoajustable conectada pivotalmente al mismo.38. The hand tool of the lever linkage type according to claim 27, wherein each of the coupling members to the workpiece includes a self-adjusting jaw pivotally connected thereto. 39. La herramienta de mano del tipo varillaje de palanca según la reivindicación 38, en donde cada mordaza está configurada para tener una forma angular para acoplamiento con dos lados adyacentes de un sujetador hexagonal.39. The hand tool of the lever linkage type according to claim 38, wherein each jaw is configured to have an angular shape for engagement with two adjacent sides of a hexagonal fastener. 40. La herramienta de mano del tipo varillaje de palanca según la reivindicación 35, en donde cada miembro de acoplamiento a la pieza de trabajo incluye una mordaza autoajustable conectada pivotalmente al mismo. 40. The type hand tool lever linkage according to claim 35, wherein each coupling member to the workpiece includes a self-adjusting jaw pivotally connected thereto. 41. La herramienta de mano del tipo varillaje de palanca según la reivindicación 40, en donde cada mordaza está configurada para tener una forma angular para acoplamiento con dos lados adyacentes de un sujetador hexagonal. 41. The hand tool of the lever linkage type according to claim 40, wherein each jaw is configured to have an angular shape for engagement with two adjacent sides of a hexagonal fastener. 42. La herramienta de mano del tipo varillaje de palanca según la reivindicación 25, en donde cada uno de los miembros de acoplamiento a la pieza de trabajo está configurado para tener una superficie de corte. 42. The hand tool of the lever linkage type according to claim 25, wherein each of the coupling members to the workpiece is configured to have a cutting surface. 43. La herramienta de mano del tipo varillaje de palanca según la reivindicación 42, en donde las superficies de corte están configuradas como cuchillas rectas.43. The hand tool of the lever linkage type according to claim 42, wherein the cutting surfaces are configured as straight blades. 44. La herramienta de mano del tipo varillaje de palanca según la reivindicación 25, en donde cada uno de los miembros de acoplamiento a la pieza de trabajo tiene una configuración arqueada, y se proporcionan una pluralidad de dientes en las superficies arqueadas que están orientadas hacia dentro de los miembros de acoplamiento de la pieza de trabajo, a fin de facilitar la sujeción de una pieza de trabajo que tiene una superficie externa generalmente circular. 44. The hand tool of the lever linkage type according to claim 25, wherein each of the coupling members to the workpiece has an arcuate configuration, and a plurality of teeth are provided on the arcuate surfaces that are oriented toward within the coupling members of the workpiece, in order to facilitate the attachment of a workpiece having an external surface generally circular.
PCT/MX2001/000005 2000-02-16 2001-02-14 Hand tool with handles hinged by pivot joints Ceased WO2001066311A1 (en)

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AU2001236173A AU2001236173A1 (en) 2000-02-16 2001-02-14 Hand tool with handles hinged by pivot joints

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CA2,299,215 2000-02-16
CA 2299215 CA2299215A1 (en) 2000-02-16 2000-02-16 Hand tool having pivoted handles

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CA (1) CA2299215A1 (en)
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109877723A (en) * 2019-04-29 2019-06-14 陈盼 A can grab device
USD910395S1 (en) 2019-03-11 2021-02-16 Milwaukee Electric Tool Corporation Pliers
US11247308B2 (en) 2017-09-11 2022-02-15 Milwaukee Electric Tool Corporation Locking pliers with movable torque-increasing jaw section
US11541514B2 (en) 2016-03-23 2023-01-03 Milwaukee Electric Tool Corporation Locking pliers

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1499186A (en) * 1923-05-15 1924-06-24 Berkley C Stone Wrench
FR716123A (en) * 1930-09-03 1931-12-15 Universal pliers for electricians
US1867505A (en) * 1931-05-21 1932-07-12 Harry G Graner Pliers
US2489057A (en) * 1945-09-20 1949-11-22 Laurence Ernest J St Lever operated gripping tool with slidable jaw face
FR998546A (en) * 1945-10-26 1952-01-21 Les Fils De Peugeot Freres Water pump pliers for tightening on sides
US2725774A (en) * 1953-08-07 1955-12-06 Tekse Richard Pipe cutting attachments for toggleactuated pliers
US2747446A (en) * 1953-07-08 1956-05-29 George J Eder Pliers with pivotally attached cam actuated supplementary jaws
US4344215A (en) * 1979-09-21 1982-08-17 Dearman Timothy Charles Pipefitter's tool
EP0950472A1 (en) * 1998-03-20 1999-10-20 Chao-Chi Wang Utility pliers

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1499186A (en) * 1923-05-15 1924-06-24 Berkley C Stone Wrench
FR716123A (en) * 1930-09-03 1931-12-15 Universal pliers for electricians
US1867505A (en) * 1931-05-21 1932-07-12 Harry G Graner Pliers
US2489057A (en) * 1945-09-20 1949-11-22 Laurence Ernest J St Lever operated gripping tool with slidable jaw face
FR998546A (en) * 1945-10-26 1952-01-21 Les Fils De Peugeot Freres Water pump pliers for tightening on sides
US2747446A (en) * 1953-07-08 1956-05-29 George J Eder Pliers with pivotally attached cam actuated supplementary jaws
US2725774A (en) * 1953-08-07 1955-12-06 Tekse Richard Pipe cutting attachments for toggleactuated pliers
US4344215A (en) * 1979-09-21 1982-08-17 Dearman Timothy Charles Pipefitter's tool
EP0950472A1 (en) * 1998-03-20 1999-10-20 Chao-Chi Wang Utility pliers

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11541514B2 (en) 2016-03-23 2023-01-03 Milwaukee Electric Tool Corporation Locking pliers
US12304043B2 (en) 2016-03-23 2025-05-20 Milwaukee Electric Tool Corporation Locking pliers
US11247308B2 (en) 2017-09-11 2022-02-15 Milwaukee Electric Tool Corporation Locking pliers with movable torque-increasing jaw section
US11850707B2 (en) 2017-09-11 2023-12-26 Milwaukee Electric Tool Corporation Locking pliers with movable torque-increasing jaw section
USD910395S1 (en) 2019-03-11 2021-02-16 Milwaukee Electric Tool Corporation Pliers
USD951731S1 (en) 2019-03-11 2022-05-17 Milwaukee Electric Tool Corporation Pliers
USD1046580S1 (en) 2019-03-11 2024-10-15 Milwaukee Electric Tool Corporation Pliers
CN109877723A (en) * 2019-04-29 2019-06-14 陈盼 A can grab device
CN109877723B (en) * 2019-04-29 2020-10-30 陈盼 A can grab device

Also Published As

Publication number Publication date
AU2001236173A1 (en) 2001-09-17
MXPA00008424A (en) 2002-11-01
CA2299215A1 (en) 2001-08-16

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