CA1216180A - Socket wrench assembly - Google Patents
Socket wrench assemblyInfo
- Publication number
- CA1216180A CA1216180A CA000449488A CA449488A CA1216180A CA 1216180 A CA1216180 A CA 1216180A CA 000449488 A CA000449488 A CA 000449488A CA 449488 A CA449488 A CA 449488A CA 1216180 A CA1216180 A CA 1216180A
- Authority
- CA
- Canada
- Prior art keywords
- socket
- assembly
- members
- wrench
- shaped
- 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.)
- Expired
Links
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 230000013011 mating Effects 0.000 description 2
- 235000006679 Mentha X verticillata Nutrition 0.000 description 1
- 235000002899 Mentha suaveolens Nutrition 0.000 description 1
- 235000001636 Mentha x rotundifolia Nutrition 0.000 description 1
- 241000283203 Otariidae Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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
- B25B13/00—Spanners; Wrenches
- B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
- B25B13/461—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member
- B25B13/462—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis
- B25B13/463—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle with concentric driving and driven member the ratchet parts engaging in a direction radial to the tool operating axis a pawl engaging an externally toothed wheel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
HIGH TORQUE EXPANDABLE SOCKET RATCHET WRENCH
ABSTRACT
A ratchet wrench usable in areas of limited access normally requiring an open-end wrench, but possessing the high torque characteristics of a closed-end socket wrench is dis-closed. A handle member terminates in an expandable yoke containing a fixed upper half and an expandable lower half for movement from an expanded open position for receiving a socket to a closed position in driving engagement with the socket. A
curved rib is formed transversely on the inner surface of each yoke half. A split ring-like nut driving socket contains exterior ratchet teeth and a circular bore formed transversely through the socket with a recessed counter bore forming a circular guide channel in the socket concentric with the trans-verse bore. The socket guide channel is received in rotational engagement with the curved ribs of the yoke halves. The socket contains a curved head having lands which in combination define a ploygonal wrench opening. A pawl mechanism mounted on the wrench handle member is resiliently biased into engagement with the ratchet teeth of the socket, thereby allowing it to turn in one direction only, and preventing rotation of the socket in the opposite direction. The split ring-like nut driving socket permits circumferential engagement of a nut through movement transverse to the socket access and the two-piece expandable yoke permits engagement of the socket by means of movement of the handle member transverse to the socket access.
ABSTRACT
A ratchet wrench usable in areas of limited access normally requiring an open-end wrench, but possessing the high torque characteristics of a closed-end socket wrench is dis-closed. A handle member terminates in an expandable yoke containing a fixed upper half and an expandable lower half for movement from an expanded open position for receiving a socket to a closed position in driving engagement with the socket. A
curved rib is formed transversely on the inner surface of each yoke half. A split ring-like nut driving socket contains exterior ratchet teeth and a circular bore formed transversely through the socket with a recessed counter bore forming a circular guide channel in the socket concentric with the trans-verse bore. The socket guide channel is received in rotational engagement with the curved ribs of the yoke halves. The socket contains a curved head having lands which in combination define a ploygonal wrench opening. A pawl mechanism mounted on the wrench handle member is resiliently biased into engagement with the ratchet teeth of the socket, thereby allowing it to turn in one direction only, and preventing rotation of the socket in the opposite direction. The split ring-like nut driving socket permits circumferential engagement of a nut through movement transverse to the socket access and the two-piece expandable yoke permits engagement of the socket by means of movement of the handle member transverse to the socket access.
Description
L2~6~
HIGH TORQUE EXPANDABLE SOCKET RATCHET WRENCH
BACKGROUND Ox THE INVENTION
. __ .
The invention generally relates to ratchet wrench construction and more specifically to improvements to ratchet wrenches of the socket type usable in areas of limited access normally limiting wrench use to the open-ended type.
There are a number of applications in which a closed-end or socket wrench is preferred for use in making or breaking a high torque union. In locations with a turning radius of at least 30 degrees, the open-ended wrench may be used by merely reversing of the wrench position with each turn. The wrench, of course, must be inserted, turned, removed, and then reinserted. This action is both time-consuming and difficult if the element is not turned the proper amount.
Additionally, there are a number of instances where the nut or bolt head is disposed in a relatively inaccessible location which limits the stroke range for back and forth manipulations and, of equal importance, limits the area in which a ratchet wrench may be positioned to engage the nut or jolt.
'I
I
SUMMARY OF THE INVENTION
It is, therefore, the principal object of the present invention to provide a ratchet wrench having a split ring-like socket read which can be positioned around a nut or bolt head to permit the wrench to be moved into torque transmitting engage-mint with the wrench lands of a nut or bolt head and thereafter operated as a closed box ratchet wrench for making or breaking a union.
The invention provides a high torque sickest ratchet lo wrench assembly, which comprises: a driving socket assembly, said driving socket assembly being circular and comprised of a pair of complemental, substantially semi-circular socket members formed with a curved head including exterior ratchet teeth and interior wrench land surfaces, said socket members cooperating to define in a closed position a polygonal opening by said land surfaces and defining an axis of rotation of said driving socket assembly, said socket members formed with upper and lower guide channels defined by a circular bottom wall and an inner and outer cylindrically-shaped side wall; and an elongated handle assembly for receiving said driving socket assembly, said elongated handle assembly comprised of an elongated handle mom-bier formed with an upper yoke member having a semi-circular interior disposed rib member defined by a semi-circularly-shaped end wall and inner and outer cylindrically shaped walls depending downwardly from said semi-circularly disposed end wall, a lower yoke member formed with a semi-circular interior rib member defined by a semi-circularly-shaped end wall and inner and outer cylindrically-shaped walls depending downwardly from said semi-circularly disposed end wall, said lower yoke member mounted to said elongated handle member to move into an expanded open post-lion with respect to said upper yoke member of said elongated handle member whereby said upper and lower yoke members in said I
expanded open position permit positioning of said driving socket assembly between said upper and lower yoke members, said rib members of said upper and lower yoke members engaging said upper and lower guide channels of said socket members forming said driving socket assembly in a closed position of said upper and lower yoke members by cooperation between said inner and outer cylindrically-shaped side walls of said rib members with said inner and outer cylindrically-shaped inner and outer side walls of said guide channels, respectively, means for transversely expanding said upper yoke member relative to said lower yoke member, means to maintain said upper yoke member relative to said lower voice member in planar parallel relationship when in said expanded open and closed positions, and a paw member disk posed in said elongated handle assembly to cooperate with said ratchet teeth of said pair of semi-circular socket members form-in said driving socket assembly, said paw member being spring-biased.
The invention also provides a socket wrench assembly having a predetermined axis of rotation, which comprises: a socket member including outer conically-shaped surfaces and an endless tooth portion circumferential formed about said socket member, said endless tooth portion formed intermediate said outer conically-shaped surfaces; a base member having a handle and a socket receiving portion formed with a channel in a plane perpendicular to said axis of rotation and with conically-shaped inner wall sections on each side of said channel of said base member for positioning said socket member therein, said endless tooth portion of said socket member extending into said channel of said socket receiving portion of said base member, said conically-shaped surfaces of said socket member cooperating with said conically-shaped inner wall sections of said base member, said base member having a ratcheting means extending in-to said channel of said socket receiving portion of said base member;
and arm members including a socket receiving portion formed with a channel in a plane perpendicular to said axis of rotation and with conically-shaped inner wall sections on each side of said channels of said arm members, said arm members being mounted to said base member for rotation in a plane of said channels out-warmly from said base member and from one another from a closed position to an opened position whereby in a closed position said socket member is captured within said socket receiving portions of said base member and said arm members, said endless tooth portion of said socket member extending into said channel of said arm members, said conically-shaped surfaces of said socket member cooperating with said conically-shaped inner wall sea-lions of said arm members.
The novel features which characterize the invention are defined by the appended claims. The foregoing and other advantages and features of the invention will hereinafter appear, and for purposes of illustration of the invention, but not by way of limitation, an exemplary embodiment of the invention is shown in the appended drawing.
-pa-grief DESCRIPTION OF DRAWING
Figure 1, is a top pun view of the socket ratchet wrench constructed according to the teachings of the invention.
Figure 2, is a side view of the wrench shown in Figure 1 with the lower yoke half in expanded position.
Figure 3, is a side view of the wrench shown in Figure 1 with socket engaged.
Figure 4, is an expanded view of the wrench shown in Figure 1.
Figure 5, is a sectional view showing mounting screws in expanded and dosed positions.
¦ Figure 6, is a perspective view of the socket assembly in closed and open positions.
FIGURE it an isometric view of a socket member for the socket wrench assembly of the present invention;
FIGURE is a side view of the socket member of FIGURE 5;
FIGURE is an element of the socket member of FIGURES 5 and 6; and FOGGIER illustrates another socket member for use with the so et wrench assembly of the present invention.
I
~LZl~
DETAILED DESCRIPTION OF THE PREFERRED ~5BODIM~NTS
._ . --In the description which follows, the parts are myriad throughout the specification and drawing with the same reference numerals, respectively. The drawings are not necessarily to scale and in some instaIIces portions have been exaggerated in order to more clearly depict certain aspects of the invention described.
Referring now -to Fig. 1, a high torque expandable socket ratchet wrench assembly constructed according to the teachings of -the invention is identified generally by the reference numeral 10. queue principal components of the ratchet wrench assembly include an elongated handle member 12 which is connected at one end by an expandable yoke assembly 14 having a fixed top half 16 and an expandable bottom half 18, as shown in Figs. 2 and 3. The yoke halves are coupled for expansion and contraction between open and closed positions by means of resiliently biased retaining screws 20 and detent gear assembly 22. Received in rotational coupling engagement with the upper and lower yoke halves is split ring-like socket assembly 24.
As best observed in Fig. 6, the socket assembly 24, comprises a pair of complemental substantially semi-circular members 26, 28 coupled by means of pin 36. Each socket member includes a curved head 30 having interior land wrench surfaces 32 which in combination define a polygonal opening 34.
Additionally, each socket member includes a circular bore 38 which is intersected by a counter bore 40 havincJ a recessed inner side wall 42 defining a curved guide channel.
The curved rib 44 of each yoke half is journal led for rotation in the guide channel 42. Each guide channel and rib are preferably rectangular in cross section and extend along a semi-circular path.
According to an important feature of the invention, this overlapping, journal led engagement of the socket guide channel and yoke rib produces an interlocking engagement of the wrench yoke and socket resulting in a stable structure having a high torque transmitting rapacity Secured to each yoke member is a curved ratchet 44, 46 which in combination define a continuous ratchet wheel as best seen in Fig. 6. Each curved ratchet includes a series of teeth 48 for engaging a paw 50 carried on the fixed yoke member 16.
cording to an important feature of the invention, socket member 28 contains a single tooth member 54 which extends beyond the plan of side wall planar surface 56 for mating engagement into the recess 58 of socket member 26 created by the absence of a single ratchet tooth member. This mating of socket members 26 and 28 produces an interleaved engagement resulting in a structure having a high stable closed bond.
Referring to Fig. 4, the paw 50 is resiliently biased by means of sprinc3 58 and ball-bearing 60 with the teeth 44 of socket 24. The paw 50 is pivotal mounted and anchored in place by spring retainer 62. A selector switch 64 permits indexing of the paw 50 so as to permit ratcheting in either a clockwise or eountereloekwise direction.
According to a further important feature of the invention, yoke halves 16 and 18 are coupled together by means of resiliently biased retaining screws 20 and springs 6G for movement from a closed position in engagement with socket 24 as shown in Fig. 3 to an expanded position for engclging the socket member. The yoke halves are maintained in Opel position by means of a plunger 22 and detent gear 70.
Referring now to Figs. 4 and 5, the compression springs 66 resiliently bias yoke halves 16, 18 into closed position. Upon depression of plunger 22, yoke half 18 is displaced a given distance of sufficient width to en~3ac3e socket member 24 and is held in expanded position as shown in Jig. 5 by means of detent gear 70 which operates in similar fashion to a conventional ballpoint pen. In this expanded position, handle member 12 is moved transverse to the socket axis so as to engage socket member 24 previously positioned about a given nut or bolt head by means of movement transverse to the nut or bolt head axis. Upon subscript depression of plunger 22, yoke half 18 is caused to be returned to its original closed position by means of biasing springs 66, thus achieving interlocking engagement with socket member 24.
A socket member, generally indicated as 60, referring now to Figures 7 to 10, is comprised of semidisc-shaped elements 62 and 64, each formed with rectangular-shaped outwardly extending continuous toothed or serrated sections 66 with upper and lower conically-shaped surfaces 68 and 70, respectively. referring specifically to Figure 8. Each of the elements 62 and 64 are formed with three rectangularly-sha-pod surfaces 102 disposed at an awing of 120 to each other about a major axis of the socket member 60 thereby defining there between a hexagon for positioning of the socket member 60 about a hexagonally- formed student Shown). The upper and lower conically-shaped are dimensioned to cooperate with the upper and lower inner walls formed on the wrench not shown).
Each of the elements 62 and comprising the socket member 60 is formed with a hinge portion and referring to Figure 10, the element 62 is formed with a lower hinge portion 74 including an orifice 76 whereas the element 64 is formed with an upper hinge portion 78 including a pin 80 wick cooperates with the orifice 76 in the lower hinge proton 74 of the element 64. Opposite the hinge portions 74 and 7G
of the elements 62 and 64, respectively, there are formed I
interlocking arm members 82 and 84, respectively, which cooperate to form and integral socket member 60, particularly when positioned within the socket wrench assembly 10 when the yoke members are in a closed potion.
t will be understood by one skilled in the art that the configuration of the yoke halves 16 and 18 of the expandable yoke assembly 14 would be modified in order to cooperate with the surfaces 68 and 70 or the drive socket assembly illustrated in Figures 7 to 10 From the foregoing description of a preferred embody- ¦
mint of the invention, those skilled in the art will appreciate that, the expandable ratchet wrench of the present invention provides a high torque capacity ratchet assembly Wesley may be quickly and easily utilized in situations requiring a ratchet or a closed box end wrench in areas of limited access. 'rho pro-vision of the interleaved yoke rib and socket channel combination strengthens and stabilizes the wrench structure.
Although a preferred embodiment of the invention has been described in detail, it should be understood that various changes, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as described.
HIGH TORQUE EXPANDABLE SOCKET RATCHET WRENCH
BACKGROUND Ox THE INVENTION
. __ .
The invention generally relates to ratchet wrench construction and more specifically to improvements to ratchet wrenches of the socket type usable in areas of limited access normally limiting wrench use to the open-ended type.
There are a number of applications in which a closed-end or socket wrench is preferred for use in making or breaking a high torque union. In locations with a turning radius of at least 30 degrees, the open-ended wrench may be used by merely reversing of the wrench position with each turn. The wrench, of course, must be inserted, turned, removed, and then reinserted. This action is both time-consuming and difficult if the element is not turned the proper amount.
Additionally, there are a number of instances where the nut or bolt head is disposed in a relatively inaccessible location which limits the stroke range for back and forth manipulations and, of equal importance, limits the area in which a ratchet wrench may be positioned to engage the nut or jolt.
'I
I
SUMMARY OF THE INVENTION
It is, therefore, the principal object of the present invention to provide a ratchet wrench having a split ring-like socket read which can be positioned around a nut or bolt head to permit the wrench to be moved into torque transmitting engage-mint with the wrench lands of a nut or bolt head and thereafter operated as a closed box ratchet wrench for making or breaking a union.
The invention provides a high torque sickest ratchet lo wrench assembly, which comprises: a driving socket assembly, said driving socket assembly being circular and comprised of a pair of complemental, substantially semi-circular socket members formed with a curved head including exterior ratchet teeth and interior wrench land surfaces, said socket members cooperating to define in a closed position a polygonal opening by said land surfaces and defining an axis of rotation of said driving socket assembly, said socket members formed with upper and lower guide channels defined by a circular bottom wall and an inner and outer cylindrically-shaped side wall; and an elongated handle assembly for receiving said driving socket assembly, said elongated handle assembly comprised of an elongated handle mom-bier formed with an upper yoke member having a semi-circular interior disposed rib member defined by a semi-circularly-shaped end wall and inner and outer cylindrically shaped walls depending downwardly from said semi-circularly disposed end wall, a lower yoke member formed with a semi-circular interior rib member defined by a semi-circularly-shaped end wall and inner and outer cylindrically-shaped walls depending downwardly from said semi-circularly disposed end wall, said lower yoke member mounted to said elongated handle member to move into an expanded open post-lion with respect to said upper yoke member of said elongated handle member whereby said upper and lower yoke members in said I
expanded open position permit positioning of said driving socket assembly between said upper and lower yoke members, said rib members of said upper and lower yoke members engaging said upper and lower guide channels of said socket members forming said driving socket assembly in a closed position of said upper and lower yoke members by cooperation between said inner and outer cylindrically-shaped side walls of said rib members with said inner and outer cylindrically-shaped inner and outer side walls of said guide channels, respectively, means for transversely expanding said upper yoke member relative to said lower yoke member, means to maintain said upper yoke member relative to said lower voice member in planar parallel relationship when in said expanded open and closed positions, and a paw member disk posed in said elongated handle assembly to cooperate with said ratchet teeth of said pair of semi-circular socket members form-in said driving socket assembly, said paw member being spring-biased.
The invention also provides a socket wrench assembly having a predetermined axis of rotation, which comprises: a socket member including outer conically-shaped surfaces and an endless tooth portion circumferential formed about said socket member, said endless tooth portion formed intermediate said outer conically-shaped surfaces; a base member having a handle and a socket receiving portion formed with a channel in a plane perpendicular to said axis of rotation and with conically-shaped inner wall sections on each side of said channel of said base member for positioning said socket member therein, said endless tooth portion of said socket member extending into said channel of said socket receiving portion of said base member, said conically-shaped surfaces of said socket member cooperating with said conically-shaped inner wall sections of said base member, said base member having a ratcheting means extending in-to said channel of said socket receiving portion of said base member;
and arm members including a socket receiving portion formed with a channel in a plane perpendicular to said axis of rotation and with conically-shaped inner wall sections on each side of said channels of said arm members, said arm members being mounted to said base member for rotation in a plane of said channels out-warmly from said base member and from one another from a closed position to an opened position whereby in a closed position said socket member is captured within said socket receiving portions of said base member and said arm members, said endless tooth portion of said socket member extending into said channel of said arm members, said conically-shaped surfaces of said socket member cooperating with said conically-shaped inner wall sea-lions of said arm members.
The novel features which characterize the invention are defined by the appended claims. The foregoing and other advantages and features of the invention will hereinafter appear, and for purposes of illustration of the invention, but not by way of limitation, an exemplary embodiment of the invention is shown in the appended drawing.
-pa-grief DESCRIPTION OF DRAWING
Figure 1, is a top pun view of the socket ratchet wrench constructed according to the teachings of the invention.
Figure 2, is a side view of the wrench shown in Figure 1 with the lower yoke half in expanded position.
Figure 3, is a side view of the wrench shown in Figure 1 with socket engaged.
Figure 4, is an expanded view of the wrench shown in Figure 1.
Figure 5, is a sectional view showing mounting screws in expanded and dosed positions.
¦ Figure 6, is a perspective view of the socket assembly in closed and open positions.
FIGURE it an isometric view of a socket member for the socket wrench assembly of the present invention;
FIGURE is a side view of the socket member of FIGURE 5;
FIGURE is an element of the socket member of FIGURES 5 and 6; and FOGGIER illustrates another socket member for use with the so et wrench assembly of the present invention.
I
~LZl~
DETAILED DESCRIPTION OF THE PREFERRED ~5BODIM~NTS
._ . --In the description which follows, the parts are myriad throughout the specification and drawing with the same reference numerals, respectively. The drawings are not necessarily to scale and in some instaIIces portions have been exaggerated in order to more clearly depict certain aspects of the invention described.
Referring now -to Fig. 1, a high torque expandable socket ratchet wrench assembly constructed according to the teachings of -the invention is identified generally by the reference numeral 10. queue principal components of the ratchet wrench assembly include an elongated handle member 12 which is connected at one end by an expandable yoke assembly 14 having a fixed top half 16 and an expandable bottom half 18, as shown in Figs. 2 and 3. The yoke halves are coupled for expansion and contraction between open and closed positions by means of resiliently biased retaining screws 20 and detent gear assembly 22. Received in rotational coupling engagement with the upper and lower yoke halves is split ring-like socket assembly 24.
As best observed in Fig. 6, the socket assembly 24, comprises a pair of complemental substantially semi-circular members 26, 28 coupled by means of pin 36. Each socket member includes a curved head 30 having interior land wrench surfaces 32 which in combination define a polygonal opening 34.
Additionally, each socket member includes a circular bore 38 which is intersected by a counter bore 40 havincJ a recessed inner side wall 42 defining a curved guide channel.
The curved rib 44 of each yoke half is journal led for rotation in the guide channel 42. Each guide channel and rib are preferably rectangular in cross section and extend along a semi-circular path.
According to an important feature of the invention, this overlapping, journal led engagement of the socket guide channel and yoke rib produces an interlocking engagement of the wrench yoke and socket resulting in a stable structure having a high torque transmitting rapacity Secured to each yoke member is a curved ratchet 44, 46 which in combination define a continuous ratchet wheel as best seen in Fig. 6. Each curved ratchet includes a series of teeth 48 for engaging a paw 50 carried on the fixed yoke member 16.
cording to an important feature of the invention, socket member 28 contains a single tooth member 54 which extends beyond the plan of side wall planar surface 56 for mating engagement into the recess 58 of socket member 26 created by the absence of a single ratchet tooth member. This mating of socket members 26 and 28 produces an interleaved engagement resulting in a structure having a high stable closed bond.
Referring to Fig. 4, the paw 50 is resiliently biased by means of sprinc3 58 and ball-bearing 60 with the teeth 44 of socket 24. The paw 50 is pivotal mounted and anchored in place by spring retainer 62. A selector switch 64 permits indexing of the paw 50 so as to permit ratcheting in either a clockwise or eountereloekwise direction.
According to a further important feature of the invention, yoke halves 16 and 18 are coupled together by means of resiliently biased retaining screws 20 and springs 6G for movement from a closed position in engagement with socket 24 as shown in Fig. 3 to an expanded position for engclging the socket member. The yoke halves are maintained in Opel position by means of a plunger 22 and detent gear 70.
Referring now to Figs. 4 and 5, the compression springs 66 resiliently bias yoke halves 16, 18 into closed position. Upon depression of plunger 22, yoke half 18 is displaced a given distance of sufficient width to en~3ac3e socket member 24 and is held in expanded position as shown in Jig. 5 by means of detent gear 70 which operates in similar fashion to a conventional ballpoint pen. In this expanded position, handle member 12 is moved transverse to the socket axis so as to engage socket member 24 previously positioned about a given nut or bolt head by means of movement transverse to the nut or bolt head axis. Upon subscript depression of plunger 22, yoke half 18 is caused to be returned to its original closed position by means of biasing springs 66, thus achieving interlocking engagement with socket member 24.
A socket member, generally indicated as 60, referring now to Figures 7 to 10, is comprised of semidisc-shaped elements 62 and 64, each formed with rectangular-shaped outwardly extending continuous toothed or serrated sections 66 with upper and lower conically-shaped surfaces 68 and 70, respectively. referring specifically to Figure 8. Each of the elements 62 and 64 are formed with three rectangularly-sha-pod surfaces 102 disposed at an awing of 120 to each other about a major axis of the socket member 60 thereby defining there between a hexagon for positioning of the socket member 60 about a hexagonally- formed student Shown). The upper and lower conically-shaped are dimensioned to cooperate with the upper and lower inner walls formed on the wrench not shown).
Each of the elements 62 and comprising the socket member 60 is formed with a hinge portion and referring to Figure 10, the element 62 is formed with a lower hinge portion 74 including an orifice 76 whereas the element 64 is formed with an upper hinge portion 78 including a pin 80 wick cooperates with the orifice 76 in the lower hinge proton 74 of the element 64. Opposite the hinge portions 74 and 7G
of the elements 62 and 64, respectively, there are formed I
interlocking arm members 82 and 84, respectively, which cooperate to form and integral socket member 60, particularly when positioned within the socket wrench assembly 10 when the yoke members are in a closed potion.
t will be understood by one skilled in the art that the configuration of the yoke halves 16 and 18 of the expandable yoke assembly 14 would be modified in order to cooperate with the surfaces 68 and 70 or the drive socket assembly illustrated in Figures 7 to 10 From the foregoing description of a preferred embody- ¦
mint of the invention, those skilled in the art will appreciate that, the expandable ratchet wrench of the present invention provides a high torque capacity ratchet assembly Wesley may be quickly and easily utilized in situations requiring a ratchet or a closed box end wrench in areas of limited access. 'rho pro-vision of the interleaved yoke rib and socket channel combination strengthens and stabilizes the wrench structure.
Although a preferred embodiment of the invention has been described in detail, it should be understood that various changes, substitutions and alterations can be made therein without departing from the spirit and scope of the invention as described.
Claims (9)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A high torque socket ratchet wrench assembly, which comprises:
a driving socket assembly, said driving socket assem-bly being circular and comprised of a pair of complemental, sub-stantially semi-circular socket members formed with a curved head including exterior ratchet teeth and interior wrench land sur-faces, said socket members cooperating to define in a closed position a polygonal opening by said land surfaces and defining an axis of rotation of said driving socket assembly, said socket members formed with upper and lower guide channels defined by a circular bottom wall and an inner and outer cylindrically-shaped side wall; and an elongated handle assembly for receiving said driv-ing socket assembly, said elongated handle assembly comprised of an elongated handle member formed with an upper yoke member hav-ing a semi-circular interior disposed rib member defined by a semi-circularly-shaped end wall and inner and outer cylindrically-shaped walls depending downwardly from said semi-circularly dis-posed end wall, a lower yoke member formed with a semi-circular interior rib member defined by a semi-circularly-shaped end wall and inner and outer cylindrically-shaped walls depending down-wardly from said semi-circularly disposed end wall, said lower yoke member mounted to said elongated handle member to move into an expanded open position with respect to said upper yoke member of said elongated handle member whereby said upper and lower yoke members in said expanded open position permit positioning of said driving socket assembly between said upper and lower yoke members, said rib members of said upper and lower yoke mem-bers engaging said upper and lower guide channels of said socket members forming said driving socket assembly in a closed position of said upper and lower yoke members by cooperation between said inner and outer cylindrically-shaped side walls of said rib members with said inner and outer cylindrically-shaped inner and outer side walls of said guide channels, respectively, means for transversely expending said upper yoke member relative to said lower yoke member, means to maintain said upper yoke member relative to said lower yoke member in planar parallel relation-ship when in said expanded open and closed positions, and a pawl member disposed in said elongated handle assembly to cooperate with said ratchet teeth of said pair of semi-circular socket members forming said driving socket assembly, said pawl member being spring-biased.
a driving socket assembly, said driving socket assem-bly being circular and comprised of a pair of complemental, sub-stantially semi-circular socket members formed with a curved head including exterior ratchet teeth and interior wrench land sur-faces, said socket members cooperating to define in a closed position a polygonal opening by said land surfaces and defining an axis of rotation of said driving socket assembly, said socket members formed with upper and lower guide channels defined by a circular bottom wall and an inner and outer cylindrically-shaped side wall; and an elongated handle assembly for receiving said driv-ing socket assembly, said elongated handle assembly comprised of an elongated handle member formed with an upper yoke member hav-ing a semi-circular interior disposed rib member defined by a semi-circularly-shaped end wall and inner and outer cylindrically-shaped walls depending downwardly from said semi-circularly dis-posed end wall, a lower yoke member formed with a semi-circular interior rib member defined by a semi-circularly-shaped end wall and inner and outer cylindrically-shaped walls depending down-wardly from said semi-circularly disposed end wall, said lower yoke member mounted to said elongated handle member to move into an expanded open position with respect to said upper yoke member of said elongated handle member whereby said upper and lower yoke members in said expanded open position permit positioning of said driving socket assembly between said upper and lower yoke members, said rib members of said upper and lower yoke mem-bers engaging said upper and lower guide channels of said socket members forming said driving socket assembly in a closed position of said upper and lower yoke members by cooperation between said inner and outer cylindrically-shaped side walls of said rib members with said inner and outer cylindrically-shaped inner and outer side walls of said guide channels, respectively, means for transversely expending said upper yoke member relative to said lower yoke member, means to maintain said upper yoke member relative to said lower yoke member in planar parallel relation-ship when in said expanded open and closed positions, and a pawl member disposed in said elongated handle assembly to cooperate with said ratchet teeth of said pair of semi-circular socket members forming said driving socket assembly, said pawl member being spring-biased.
2. The high torque socket ratchet wrench assembly as defined in claim 1 wherein said rib members of said yoke members engage said driving socket assembly about an arc greater than 180° of said driving socket assembly.
3. The high torque socket ratchet wrench assembly as defined in claim 1 wherein said expandable lower yoke member is spring-biased into a closed position.
4. The high torque socket ratchet wrench assembly as defined in claim 1 wherein said guide channels and rib members are rectangularly-shaped in cross-section.
5. A socket wrench assembly having a predetermined axis of rotation, which comprises:
a socket member including outer conically-shaped surfaces and an endless tooth portion circumferentially formed about said socket member, said endless tooth portion formed intermediate said outer conically-shaped surfaces;
a base member having a handle and a socket receiving portion formed with a channel in a plane perpendicular to said axis of rotation and with conically-shaped inner wall sections on each side of said channel of said base member for positioning said socket member therein, said endless tooth portion of said socket member extending into said channel of said socket receiving portion of said base member, said conically-shaped surfaces of said socket member cooperating with said conically-shaped inner wall sections of said base member, said base member having a ratcheting means extending into said channel of said socket receiving portion of said base member; and arm members including a socket receiving portion formed with a channel in a plane perpendicular to said axis of rotation and with conically-shaped inner wall sections on each side of said channels of said arm members, said arm members being mounted to said base member for rotation in a plane of said channels outwardly from said base member and from one another from a closed position to an opened position whereby in a closed position said socket member is captured within said socket receiving portions of said base member and said arm members, said endless tooth portion of said socket member extending into said channel of said arm members, said conically-shaped surfaces of said socket member cooperating with said conically-shaped inner wall sections of said arm members.
a socket member including outer conically-shaped surfaces and an endless tooth portion circumferentially formed about said socket member, said endless tooth portion formed intermediate said outer conically-shaped surfaces;
a base member having a handle and a socket receiving portion formed with a channel in a plane perpendicular to said axis of rotation and with conically-shaped inner wall sections on each side of said channel of said base member for positioning said socket member therein, said endless tooth portion of said socket member extending into said channel of said socket receiving portion of said base member, said conically-shaped surfaces of said socket member cooperating with said conically-shaped inner wall sections of said base member, said base member having a ratcheting means extending into said channel of said socket receiving portion of said base member; and arm members including a socket receiving portion formed with a channel in a plane perpendicular to said axis of rotation and with conically-shaped inner wall sections on each side of said channels of said arm members, said arm members being mounted to said base member for rotation in a plane of said channels outwardly from said base member and from one another from a closed position to an opened position whereby in a closed position said socket member is captured within said socket receiving portions of said base member and said arm members, said endless tooth portion of said socket member extending into said channel of said arm members, said conically-shaped surfaces of said socket member cooperating with said conically-shaped inner wall sections of said arm members.
6. The socket wrench assembly as defined in claim 5 wherein said arm members are formed with a shoulder portion and wherein said base member includes locking means for engaging said shoulder portion of said arm members in said closed posi-tion.
7. The socket wrench assembly as defined in claim 5 wherein said socket member is comprised of two socket sections forming an integral socket member.
8. The socket wrench assembly as defined in claim 7 wherein said socket portions are mounted to one another about a hinge element.
9. The socket wrench assembly as defined in claim 8 wherein said socket portions are provided with interlocking elements formed in said socket portion opposite said hinge element.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US47536183A | 1983-03-14 | 1983-03-14 | |
| US06/475,361 | 1983-03-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1216180A true CA1216180A (en) | 1987-01-06 |
Family
ID=23887235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000449488A Expired CA1216180A (en) | 1983-03-14 | 1984-03-13 | Socket wrench assembly |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0122179A3 (en) |
| CA (1) | CA1216180A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USD300296S (en) | 1986-04-15 | 1989-03-21 | Easco Corporation | Ratchet wrench |
| USD299206S (en) | 1986-10-30 | 1989-01-03 | Easco Corporation | Combination wrench |
| US20040211298A1 (en) * | 2003-04-10 | 2004-10-28 | Williams Donald Edward | Shock absorber system adjustment device |
| GB2446857B (en) * | 2007-02-20 | 2011-06-01 | John Cocker | Split socket kit |
| EP2601016A2 (en) | 2010-08-06 | 2013-06-12 | American Grease Stick Company | Wrench with trigger |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1029033A (en) * | 1950-12-04 | 1953-05-29 | Forges Stephanoises Sa Des | Ratchet wrench with reverse direction |
| US2636411A (en) * | 1951-03-09 | 1953-04-28 | Weldon A Wood | Open end ratchet wrench |
| US4258595A (en) * | 1979-12-26 | 1981-03-31 | Ramsey Marvin L | High torque sectional socket ratchet wrench |
| US4374479A (en) * | 1980-12-11 | 1983-02-22 | Minotti Peter L | Torque transfer device for wrench applications |
| FR2520654A1 (en) * | 1982-02-03 | 1983-08-05 | Vromman Michel | Spanner with demountable cylindrical head - has two inter-articulated pieces and housing into handle fork to be held by pins engaging slits |
-
1984
- 1984-03-13 CA CA000449488A patent/CA1216180A/en not_active Expired
- 1984-03-14 EP EP84400514A patent/EP0122179A3/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| EP0122179A2 (en) | 1984-10-17 |
| EP0122179A3 (en) | 1986-01-22 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |