CN201297572Y - Light generating device, beam generating device and manual tool - Google Patents

Abstract

The utility model discloses a device for generating the light on a work surface such as the wall, which comprises a shell, a re-guiding component and a measuring tool, wherein, the shell contains a self-horizontal swinging-type component and a light source that guides the beam along with the path; the re-guiding component is contained in the shell and can change the path of the beam before the beam is shot from the shell; the measuring tool responds to the rotation of the shell on the work surface. When in use, the device alternatively generates the light on the work surface in the expected direction.

Description

Light generating devices, beam generating devices and hand tools

Cross References to Related Applications

This application is a continuation-in-part of co-pending U.S. Application No. 11/140,476, filed May 27, 2005, entitled "Laser Level," which was filed in October 2002 U.S. Patent Application No. 10/277,474, filed on the 22nd, titled "Laser Level," is a continuation of the current U.S. Patent No. 6,914,930. This application also claims the benefit of Provisional Patent Application No. 60/736,818, filed November 15, 2005, entitled "Laser Level." The disclosures of the aforementioned applications and patent documents are incorporated herein by reference in their entirety.

technical field

The utility model relates to a light generating device, in particular to a self-leveling laser leveler, which includes a redirection assembly operable to selectively guide a single source laser beam in multiple directions.

Background technique

Alignment of surfaces is a common problem in various fields, from architecture to interior decoration. Proper spatial alignment is necessary to ensure that the walls are perpendicular to the ground, or plumb. Laser levels are often used in architecture to create a plane of light that serves as a reference for various projections. Laser levels save considerable time and effort during the initial layout of architectural projections compared to other tools such as beam levels, chalk lines or torpedo levels. Some examples of projects where laser levels are useful include laying tile, hanging drywall, placing cabinets, installing counter tops, and building decking.

Utility model content

Disclosed herein is a light generating device and a self-horizontal beam generating device according to the utility model. The light generating device and the self-horizontal light beam generating device of the present invention may include a pendulum component and a beam redirecting component. The pendulum assembly may include a self-leveling rocker and a light source connected to the rocker. The pendulum assembly and light source are configurable to emit light beams along a generally vertical path. The beam redirecting component may be capable of altering the propagation path of the beam emitted by the light source. Specifically, the redirection assembly is selectively positionable to alter the propagation path of the light beam to a desired direction (eg, to a substantially horizontal direction). The light generating device may further comprise an internal protractor capable of automatically measuring the angular position of the device with respect to a normal or a reference position/orientation. The utility model also discloses a hand tool comprising the above light generating device and the self-horizontal beam generating device.

An aspect of the present utility model provides a self-leveling light beam generating device, comprising: a housing; a beam of light; and a beam redirecting assembly movable from a first position to a second position to selectively redirect the beam.

Another aspect of the present utility model provides a light generating device, including: a housing, which includes a first window and a second window; a self-leveling pendulum assembly arranged in the housing, which includes: a pendant, and a light source, which can operative to generate light on a work surface, wherein the light source emits a beam of light propagating in a first direction; and a redirection assembly disposed within the housing, wherein the redirection assembly is operable to allow the beam of light from the assembly The first position, continuing to propagate in the first direction, is moved to a second position in which the assembly redirects the light beam from the first direction to a second direction.

Yet another aspect of the present invention provides a light generating device comprising: a housing adapted to contact a substantially vertical work surface; a pendulum assembly comprising: a pendulum, and a light source fixed to the pendant, operative to generate light on the work surface; and a measurement tool responsive to rotation of the housing on the work surface.

Still another aspect of the present invention provides a self-horizontal light beam generating device, comprising: a casing; a pendulum assembly, which includes: a pendulum, which is swingably suspended in the casing through a first fixed point, and fixed to the a light source of the rocker, wherein the light source is operable to generate a beam of light along a path; and a beam redirection assembly connected to the housing by a second fixed point, wherein the redirection assembly is movable from a first position to a second position to selectively redirect the light beam out of the housing.

Still another aspect of the present utility model provides a hand tool, comprising: a tool part; a handle part; and a light generating device, which includes: a self-leveling pendulum assembly, which includes: a rocker, and a rocker fixed to the rocker a light source operable to generate a beam of light along a path; and a beam redirecting assembly movable from a first position to a second position to selectively redirect the beam of light.

The utility model has the advantages of compact volume, flexible and convenient use.

Describe the embodiment of the utility model in detail below with reference to accompanying drawing.

Description of drawings

FIG. 1A shows a front view of a light generating device according to an embodiment of the present invention.

FIG. 1B shows a perspective view of the light generating device of FIG. 1A .

FIG. 2A shows an exploded view of the light generating device of FIG. 1A with the front housing portion removed for clarity.

2B shows a front perspective view of the light generating device of FIG. 1A with the front housing portion removed for clarity.

3A-3C illustrate internal views of the light generating device of FIG. 1A, illustrating the operation of the rocker locking mechanism.

4A shows an exploded view of the light generating device of FIG. 1A with the rear housing portion removed for clarity.

4B shows a rear perspective view of the light generating device of FIG. 1A with the rear housing portion removed for clarity.

5A-5C illustrate internal views of the light generating device of FIG. 1A, illustrating the operation of the beam redirecting assembly.

Fig. 6 shows a rear perspective view of the light generating device of Fig. 1, showing the connection ring of the surface mount device.

Fig. 7 shows an isolated perspective view of a surface mount device according to an embodiment of the invention.

FIG. 8 shows the surface mount device of FIG. 7 connected to the light generating device of FIG. 6 .

9 is a side perspective view of a hand tool incorporating the light generating device of FIG. 1A.

FIG. 10 is an enlarged view of the light generating device of FIG. 9 .

Throughout the disclosure, the same reference numerals are used to refer to the same components.

Detailed ways

1A and 1B respectively show a front view and a perspective view of a light generating device according to an embodiment of the present invention. As shown, light generating device 10 may include a housing or housing 100 that includes one or more windows 110A-C operable to allow light beams to propagate from housing 100 . The term "window" includes not only openings with transparent or translucent covers, but also uncovered holes through which light beams can pass. The number, shape and/or dimensions of the windows 110A-C are not particularly limited to those shown here. When there are multiple windows 110A-C, the windows may be angularly spaced about the housing 100 at any angle suitable for their stated purpose. By way of specific example, as shown in FIG. 1A , the top of housing 100 includes a first window 110A, a second window 110B, and a third window 110C, which are angularly spaced apart from each other. The angle between the windows may include, but is not limited to, about 45°-90°. For example, the second window 110B may be generally aligned with an axis extending vertically through the housing 100 , while the first window 110A and/or third window 110C may be generally aligned with an axis extending horizontally through the housing.

The housing 100 may also include a first actuator 120, a second actuator 130, and a viewing grid 140 (each discussed in more detail below). The housing 100 may be formed as a unitary structure or may be formed from a front portion 150 and a rear portion 160 (best shown in FIG. 1B ). Housing 100 may be made of a hard impact resistant, preferably moldable material, such as a hard thermoplastic material such as ABS or polystyrene. The housing 100 may also include a grip portion formed from a soft or low durometer thermoplastic elastomer that is attached or overmolded to the housing 100 . Alternatively or additionally, the grip portion may be made of a "soft touch" elastic material such as SANTOPRENE, KRATON and MONOPRENE.

The light generating device 10 may further include a pendulum component. 2A and 2B are front perspective views of the light generating device 10 of FIGS. 1A and 1B with the front housing portion 150 removed for clarity. As shown in the exploded view of FIG. 2A , the pendulum assembly 200 may include a rocker 205 , a light generating unit or light source 210 , a damping mechanism 215 , an alignment mechanism 220 and/or a bearing cap 225 . Rocker 205 may be connected to rear housing portion 160 such that it is free to pivot within housing 100 (ie, it is swingably suspended). For example, the rocker 205 is pivotally connected to a post 230 extending from the inner surface of the rear housing portion 160 . Guides 235 may be positioned over posts 230 to guide and/or limit the angle and/or direction of pivoting of rocker 205 . For example, rocker 205 can oscillate approximately 12° (±6° from its normal (0°) position). One or more bearings (not shown) may optionally be disposed between rocker 205 and post 230 to allow for smoother and more stable motion. Additionally, bearing cap 225 may be secured to guide 235 thereby defining rocker 205 to rear housing portion 160 (best shown in FIG. 2B ).

In operation, rocker 205 is capable of rocking within housing 100 about a pivot generally transverse to the beam of light generated by light source 210, resulting from horizontal pendulum assembly 200, which is operable to move light generating device 10 against a generally vertical A straight working surface such as a wall produces a substantially vertical (plumb) ray when placed. The rocker 205 is self-leveling even if the work surface is uneven, or even if the device 10 is placed against a work surface in a slightly inclined orientation.

The light source 210 may comprise a device operable to generate a light beam LB (see FIGS. 5A-5C ), such as a plane or line of light. Light source 210 may be secured to rocker 205 proximate its upper end (ie, closer to redirection assembly 400—as described below). For example, light source 210 may include, but is not limited to, a laser assembly including a barrel housing a laser diode, a collimating lens, and a line lens (not shown). The collimator lens shapes the laser beam exiting the laser diode into a beam with a generally elliptical cross-section. The line lens then converts the laser beam into multiple overlapping planar beams (ie, laser planes with different focal lengths). Additional information regarding light source 210, and in particular, the configuration of an exemplary laser assembly is disclosed in US Published Patent Application No. 2006/0013278 (Raskin et al.), the disclosure of which is incorporated herein by reference in its entirety. A power source (not shown) connected to the light source 210 may be controlled by a switch 265 in communication with the first actuator 120 . In operation, the light source 210 produces a light beam LB directed thereto along a path. In particular, light beam LB may be directed toward redirection assembly 400 along a generally vertical path (ie, light source 210 is oriented to direct the light beam upwardly, along the longitudinal axis of rocker 205, as discussed in more detail below). Light beam LB propagates out of housing 100 (through windows 110A, 110B, and 110C), producing light onto a work surface such as a wall.

The damping mechanism 215 can reduce the swing of the pendulum 205 . The damping mechanism 215 may be any mechanism suitable for its stated purpose (ie, damping the motion of the rocker 205). For example, the damping mechanism 215 may comprise a bent rod 217 having a metal (eg copper) plate on its underside. The inner surface of the rear housing portion 160 (not shown) may include magnets configured to align with metal plates on the flex bar 217 . The metal plates may be formed and positioned so that a precise gap is maintained at a predetermined width as the rocker 205 moves (ie, as the rocker swings about the post 230 ). The interaction between the eddy currents in the copper plate and the magnetic field of the magnet causes the rocking motion of the rocker 205 to be retarded. Further information regarding the damping mechanism 215 can be found in US Patent No. 5,144,487, the disclosure of which is incorporated herein by reference in its entirety. The calibration mechanism 220 of the pendulum assembly 200 operates to calibrate the orientation of the rocker 205 . For example, calibration mechanism 220 may include a balance screw disposed proximate the base of rocker 205 . The alignment mechanism 220 may be utilized to adjust the path of the laser beam LB, in particular, to allow the light source 210 to be angularly adjusted along a vertical plane relative to the housing 100 . The light generating device 10 of the present invention may further include a locking mechanism 240 configured to stabilize the rocker 205 so as to prevent its pivotal movement. The locking mechanism 240 may include a lever 245 having a tab 250 configured to engage a recess 255 formed in the bottom surface of the rocker 205 . Rod 245, which is pivotally connected to post 260, may be resiliently biased upward so that in its normal position tab 250 engages recess 255 of rocker 205, preventing its pivotal movement. The first activator 120 can be engaged to selectively drive the rod 245 downward, thereby disengaging the tab 250 from the recess 255 in the rocker. Once disengaged, rocker 205 is free to pivot/swing about post 230 . The operation of pendulum assembly 200 and associated locking mechanism 240 is explained with reference to Figures 3A, 3B and 3C, which show a front interior view of light generating device 10 of Figure 1A. Referring to FIG. 3A , the first actuator 120 (eg, a slide actuator) begins in a first position, wherein the rod 245 of the locking mechanism 240 locates the tab 250 within the recess 255 of the rocker 205 . In this position, the rocker 205 is secured against pivotal movement. This results in fixing the light source 210 as a whole.

Engagement of the first actuator 120 moves the first actuator 120 from its first position to the second position by applying a force (indicated by arrow F in FIG. 3B ). In the second position (of FIG. 3B ), the first actuator 120, which is connected to the switch 265, activates the light source 210, thereby generating the light beam LB. In this position, the locking mechanism 240 is still engaged and the rocker does not move.

Continued application of force F moves the first actuator from the second position to the third position (FIG. 3C). In this third position, the first activator 120 drives the rod 245 of the locking mechanism 240 downward, thereby displacing the tab 250 from the recess 255 of the rocker 205 . As a result, rocker 205 is free to pivot in housing 100 about post 230 (indicated by arrow S), thereby engaging the self-horizontal feature with light source 210 directing beam LB in a substantially vertical direction. In this way, rocker 205 may be released and light source 210 activated (as shown in FIG. 3C ) to achieve a self-leveling (or self-adjusting) horizontal or vertical line (described below).

In this manner, a user may selectively activate the self-levelling feature of light source 210 and/or light generating device 10 . Selectively preventing movement of the rocker 205 relative to the housing 100 not only prevents damage to the rocker 205 during storage and/or transportation, but also allows the user to stabilize the light generated on the work surface (ie, it prevents the light from being level). As a result, housing 100 may be manually rotated to project light onto the work surface at angles other than substantially horizontal and/or substantially vertical. In another embodiment, the switch 265 may be further operatively connected to a light emitting diode (LED) configured to illuminate a portion of the measurement tool 405 ( FIG. 4A ) that is visible through the viewing pane 140 of the housing 100 . Specifically, the LED may be engaged when the first actuator 120 is in its second position (FIG. 3B), but not when the first actuator 120 is in its first (FIG. 3A) and/or third (FIG. 3C) position. Time does not engage. With this embodiment, the light generating device 10 indicates when the measuring tool 405 can be used correctly. Specifically, it can illuminate the measurement tool 405 when the rocker 205 is locked and the beam is stabilized (eg, when the first actuator 120 is in the second position), and when the rocker 205 is released and the beam is self-leveling (eg, when the first actuator 120 is in the second position). When the first actuator 120 is in the third position) the measurement tool is not illuminated.

In another embodiment of the present invention, the light generating device 10 may include a shutter (not shown) arranged in front of the measuring tool 405 and behind the viewing grid 140 . The case is configurable to open when the first actuator 120 is in its second position (FIG. 3B), thereby indicating that the rocker 205 is locked and the measurement tool 405 can be used. Also, the shutter may be adapted to close so as to prevent viewing of the measurement tool 405 through the viewing grid 140 when the actuator 120 is in its third position (FIG. 3C), thereby preventing the user from using the measurement tool 405 when the rocker 205 is released. 4A and 4B are rear perspective views of the light generating device 10 of FIG. 1A with the rear housing portion 160 removed for clarity. Referring to FIG. 4A , which shows an exploded perspective view, the light generating device 10 may further include a redirection assembly 400 and a measurement tool 405 . Redirecting assembly 400 includes structures operable to selectively redirect light beam LB generated by light source 210 in multiple directions. For example, redirection assembly 400 may be configured to direct light beam LB from light source 210 (eg, having a substantially vertical path) through first window 110A, second window 110B, or third window 110C of housing 100 .

In the embodiment shown in FIGS. 4A and 4B , redirection assembly 400 is a mirror assembly that includes a base or platform 415 having a first mirror 420 and a second mirror 425 . The positioning of the mirrors 420, 425 is not particularly limited to those described herein, so long as the mirrors 420, 425 are capable of redirecting the beam LB at a desired angle (e.g., changing the path of the beam (e.g., 90° in the example shown) ) is fine. For example, first mirror 420 may be spaced approximately 45° from second mirror 425 , creating a gap 427 between first mirror 420 and second mirror 425 . In other words, each mirror 420, 425 may be approximately 22.5° from a generally vertical line that intersects the gap 427 between the mirrors. This positions the mirrors 420, 425 so that the light beam LB propagating (eg, along a substantially vertical path) from the light source 210 can either reflect off the pair of mirrors 420, 425 or pass through the gap 427 (discussed in more detail below). One or both mirrors 420, 425 may further be connected to an alignment tool 430 (e.g., a spring biased screw) configured to angularly adjust the position of the mirrors 420, 425 on the platform 415, and/or one of the mirrors 420, 425 Regarding the location of another mirror 420,425. In the embodiment shown in Figures 4A and 4B, the second mirror 425 is fixed to the platform 415, while the first mirror 420 is adjustable. Redirect assembly 400 may be movably connected to housing front portion 150 . Specifically, the redirection assembly 400 may be rotatably mounted on a post P extending from the inner surface of the housing front portion 150 . The redirection assembly 400 can be rotated about the post P to selectively orient the redirection assembly, thereby orienting the mirror with respect to the light source 210/beam LB relationship. The second actuator 130 can be utilized to drive the rotation of the redirection assembly 400 around the column P, thereby selectively changing the propagation path of the light beam LB generated by the light source 210 as it passes through the housing 100 . Specifically, the second actuator 130 may include a channel 435 that secures a post 440 extending from the platform 415 of the redirection assembly 400 . The second actuator 130 is configurable to slide laterally through the housing 100 (indicated by arrow A in FIG. 4B ) such that it rotates the platform 415 as it slides, thereby repositioning the mirrors 420 , 425 . Detents may be provided to indicate a desired rotational stop for platform 415 . The operation of the redirection assembly 400 of the light generating device 10 according to the present invention is explained with reference to FIGS. 5A , 5B and 5C , which show an internal view of the front end of the device 10 of FIG. 1A . As explained above, light source 210 may be mounted on rocker 205 such that light beam LB generated by light source 210 is directed toward redirection assembly 400 (eg, along a generally vertical propagation path). Referring to 5A, the redirection assembly 400 can be oriented in a first position wherein the light beam LB can be redirected by approximately -90° such that it is directed out of the first window 110A. In particular, the first mirror 420 is positioned within the propagation path of the vertical beam LB; as a result, the beam reflects off the first mirror 420 and then off the second mirror 425 . This redirects the substantially vertical beam LB to have a substantially horizontal propagation path, exiting the housing 100 through the first window 110A.

Engaging the second actuator 130 repositions the mirror assembly 400 with respect to the light source 210 as described above. Referring to FIG. 5B, application of force (indicated by arrow F) causes second actuator 130 to slide to the right and rotate redirection assembly 400 (indicated by arrow R), thereby moving it from the first position to the second position. The angle of rotation may include, but is not limited to, about 45°. In this second position, neither the first mirror 420 nor the second mirror 425 is positioned in the propagation path of the light beam LB. As a result, light beam LB may be allowed to maintain its generally vertical travel path, passing through redirection assembly 400 (through gap 427 between mirrors 420, 425) and through second window 110B to the outside. 5C, continue to apply force F to the second actuator 130 so that the redirection assembly 400 continues to rotate (indicated by arrow R) in the housing 100 (for example, continue to rotate the redirection assembly about 45°) to orient the redirection assembly 400 in third position. In this third position, the beam LB can be redirected by approximately 90° so that it is directed out of the third window 110C. In particular, the second mirror 425 is now positioned in the propagation path of the vertical beam LB; as a result, the beam reflects off the second mirror 425 and then off the first mirror 420 . This redirects the substantially vertical beam LB to have a substantially horizontal propagation path, exiting the housing 100 from the third window 110C. To return the redirection assembly 400 to the first or second position, a reverse force (not shown) may be applied to slide the second actuator 130, thereby rotating the redirection assembly in the opposite direction.

In this manner, a user can selectively orient the redirection assembly 400 to selectively control/direct the propagation path of the light beam LB generated by the light source 210 . This configuration allows a single light source 210 to generate light on the work surface in multiple different directions (eg, horizontal left, vertical, horizontal right). Every ray of light generated on the work surface is self-levelling due to the pendulum assembly 200 . Alternatively, the light can be fixed with respect to the housing so that the user can manually adjust the light by repositioning the housing 100 . This configuration enables the user to direct the light in a desired direction, depending on the alignment needs of the work surface. Measurement tool 405 (see FIGS. 4A and 4B ) is configurable to respond to rotation of housing 100 on a work surface (eg, a generally vertical work surface such as a wall). In particular, the measurement tool 405 may be configured to measure the angle by which the light generating device 10 has been rotated and/or deviated from its normal (eg, upright/plumb) position. For example, measurement tool 405 may include a protractor and, in particular, a gravity-responsive protractor. The gravity-responsive protractor may be a 360° protractor adapted to pivot freely about central axis 450 . The protractor may include a weight region 410 that includes one or more weights positioned proximate to the normal position of the protractor (and thus, the light source 10). As the light generating device 10 rotates, the weight region 410 maintains a constant protractor position with respect to the plumb line (or plumb direction) due to gravity. For example, when the light generating device 10 is rotated from the normal upright/vertical direction, the weight region 410 retracts to the normal position, thereby rotating the protractor around the axis 450 . Markings on the protractor (eg, angle measurement marks) can be viewed through viewing grid 140 on the front housing portion. In this way, the light generating device 10 can automatically measure the tilt angle of the device 10 (regardless of how far the housing 100 is rotated) and, likewise, the angle from the projection reference line (beam LB).

For another example, when the reference line (beam LB) is projected out of the second (vertical) window 110B, the user can lock the rocker 205 to stabilize the projection of the reference line (beam LB). Turning the light generating device 10 automatically activates the protractor 405, which allows the user to measure the angle between the projected beam LB and a vertical plumb (or horizontal) line. This measurement is then displayed via the viewing pane 140 of the housing 100 .

The light generating device 10 of the present invention may also be adapted to be mounted to a support or work surface, such as a substantially vertical work surface such as a wall. 6-8 illustrate a work surface securing mechanism according to an embodiment of the present invention. In particular, FIG. 6 is a rear view of light generating device 10 showing rear housing portion 160 . FIG. 7 is an isolated top perspective view of a surface mount device 700 in accordance with an embodiment of the present invention. As shown, the rear housing portion 160 may include a magnet 600 operable to slidably engage an attachment ring 710 (eg, a metal ring) located on the surface mount device 700 . Surface mount device 700 may include, but is not limited to, a substantially circular disk. The surface mount device 700 may include a fastener mount 720 configured to receive a fastener, such as a screw. The fastener mount 720 may include an opening 730 adapted to receive a fastener and a conical recess 740 for receiving the head and shank of the fastener. With this configuration, any type of screw head that fits through opening 730 will "self-center" on conical recess 740 when tightened. In operation, once the surface mount device 700 is in the desired position, the fastener is inserted into the opening 730 and engages the work surface. The screw head is positioned within the conical recess 740, supporting the surface mount device 700 on the work surface. Alternatively or additionally, the surface mount device 700 may include holes (not shown) operable to receive point fasteners (e.g., thumbtacks, nails, tacks, etc.) surface and fastened to surface mount devices.

In operation, the surface mount device 700 may be mounted on a work surface using the fasteners described above. The surface mount device 700 may then be oriented so that the connection ring 710 faces outward, away from the work surface. The magnet 600 located in the rear housing portion 160 may then be aligned with the connection ring 710 , thereby connecting the light generating device 10 to the surface mount device 700 . When connected together, the light generating device 10 can be rotated with respect to the surface mount device 700, as indicated by arrow R, if desired. That is, once connected, light generating device 10 may be selectively rotated about connector 700 to any desired angular position, including, but not limited to, a 360° rotation. In this way, the interaction between the magnet 600 and the attachment ring 710 stabilizes the device 10, holding it in place while still allowing it to rotate about the work surface.

In addition to being a stand-alone device, the light generating device 10 of the present invention can be integrated with a hand tool such as an electric drill. 9-10 illustrate a light generating device 10 according to another embodiment of the present invention. FIG. 9 is a perspective view of a hand tool 900 including a light generating device 910 incorporated therein according to an embodiment of the present invention. As shown, hand tool 900 may include a tool portion 905 (eg, a drill), a light generating device 910 , and a handle portion 920 . FIG. 10 shows an enlarged view of the hand tool 900 of FIG. 9 showing the light generating device 910 integrated into the hand tool 900 at the base 925 of the handle portion 920 . Light generating device 910 may include structures similar to those described above, including windows 110A, 110B, 110C, pendulum assembly 200 (with light source 210 ), and redirection assembly 400 .

The light generating device 910 may further include a first actuator 120 operable to provide power to the tool portion 905 and/or the light generating device 910 . Power to the tool portion 905 and light generating device 910 may be provided by a power source (eg, a battery) also stored in the base 925 of the handle portion 920 . Tool portion 905 and light generating device 910 may be powered by the same power source, or may have separate power sources. The light generating device 910 may further include a second actuator 130 similar to those described above. In particular, second exciter 130 is configurable to selectively orient redirection assembly 400 to direct light beam LB through desired windows 110A, 110B, 110C. In operation, light generating device 910 is placed against a support or work surface, such as a wall. In particular, the bottom surface 930 of the base 925 can be placed against a generally vertical work surface. Light source 210 can be energized to generate light beam LB to generate light on the work surface. Pendulum assembly 200 provides the self-leveling feature as described above, while redirection assembly 400 enables the user to selectively direct beam LB out of a desired window 110A, 110B, 110C, as described above. The light produced on the work surface can be used to mark the reference marks by using eg a pencil. The user may then utilize the hand tool 900 to work on (eg drill into) the work surface, using the reference marks as a guide.

Although the invention has been described in detail and with reference to specific embodiments thereof, it is obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. For example, housing 100 of light generating device 10 may be of any suitable size and may be of any shape suitable for its purpose. The housing 100 may be shaped to prevent its placement on a horizontal plane such as the ground. Light source 210 may be any source capable of generating a beam of light and directing it toward redirection assembly 400 . Although shown fixed to rocker 205 , light source 210 can slide along the rocker to adjust the distance between the light source and redirection assembly 400 . The rocker locking mechanism may be configured such that the rod 245 is resiliently biased out of engagement with the rocker 205 with the first activator 240 forcing the rod 245 into engagement with the rocker 205 .

The windows 110A, 110B, 110C may be of any shape and include any desired dimensions. Also, the windows 110A, 110B, 110C may be sized to prevent the light beam LB from projecting out of the first housing 100 when the pendulum assembly 200 contacts another component disposed within the housing 100 . In addition, the windows 110A, 110B, 110C also prevent the light beam LB from exiting the housing 100 when the pendulum assembly 200 approaches the limits of its angular range. In other words, assume that the angular range is from about -6° to about +6° from the normal (i.e., the vertical centerline of the pendulum assembly 200 from where it is horizontal), and where the pendulum assembly 200 can move beyond this Any angular movement of the range, the size and/or shape of the windows 110A, 110B, 110C can be configured to block the light beam when the rocker 205 is moved more than about -5° and/or about +5° from normal. This configuration prevents the user from relying on the emitted beam (as substantially horizontal or vertical) when the rocker has almost reached or exceeded its range of motion - when the beam may in fact no longer represent a true plumb or level.

Redirecting assembly 400 may include any structure configured to selectively redirect light beam LB generated by light source 210 . By way of specific example, instead of mirror pairs 420, 425, redirection assembly 400 may include prisms that alter light beam LB. As another example, a pentaprism may be positioned on platform 415 . Five side-reflecting prisms can be selectively positioned (eg, rotated) into the propagation path of the beam LB, thereby redirecting the beam 90°. Also, the redirection assembly 400 may selectively rotate clockwise and/or counterclockwise. Additionally, the second actuator 130, which is operable to rotate the redirection assembly 400, may comprise any suitable switch and be located in any suitable location. By way of specific example, the second actuator may comprise a knob or lever located atop either the rear portion 160 or the front portion 150 of the housing 100 . Similarly surface mount device 700 may have any suitable dimensions and may be of any shape suitable for its stated purpose.

Hand tool 900 may include any hand tool suitable for acting on a work surface. Although a cordless drill is shown, hand tool 900 may include other corded and cordless tools such as saws, screwdrivers, nail guns, staple guns, and the like. Hand tool 900 may also include measurement tool 405 as described above.

The light generating device 10 according to the present invention may further include a column sensor circuit. Information regarding post sensor circuits can be found in US Patent Nos. 4,099,118 and 4,464,622, the disclosures of which are incorporated herein by reference in their entirety.

Thus, the present invention is intended to include the modifications and variations of the present invention as long as they are within the scope of the claims of the present invention and their equivalents. It is understood that terms such as "top", "bottom", "front", "rear", "side", "height", "length", "width", "upper", "lower", "Inner," "outer," etc., as used herein, are used to describe points of reference only, and do not limit the invention to any particular orientation or configuration.

Claims (38)

1. A self-horizontal light beam generating device, characterized in that, comprising: case; pendulum assembly, which includes: ornaments, and a light source secured to the ornament, wherein the light source is operable to produce a beam of light along a path; and A beam redirecting assembly movable from a first position to a second position to selectively redirect the beam. 2. The light beam generating device according to claim 1, characterized in that: the light source directs the light beam in a vertical direction; and A beam redirection assembly is capable of redirecting the beam from the vertical direction to a horizontal direction. 3. The light beam generating device of claim 1 , wherein the rocker is swingably suspended within the housing by a first fixed point, and the redirection assembly is rotatably connected to the housing by a second fixed point. the casing. 4. The beam generating device of claim 1, wherein the beam redirecting assembly comprises a first mirror angularly spaced from a second mirror. 5. The light beam generating device as claimed in claim 4, characterized in that: in said first redirection assembly position, a first mirror is oriented in said path of said light beam; In the second redirection assembly position, the second mirror is oriented in the path of the light beam. 6. The light beam generating device of claim 1, wherein the housing includes at least one window configured to allow the light beam to propagate through the housing such that light is generated on a work surface. 7. The light beam generating device of claim 1, further comprising a measurement tool responsive to rotation of said housing on said work surface. 8. The light beam generating device of claim 7, wherein the measuring tool comprises a protractor. 9. The light beam generating device of claim 1, wherein the light source comprises a laser assembly comprising a laser diode, a collimator lens and a line lens. 10. The beam generating device of claim 1, wherein the pendulum assembly is rockingly suspended to pivot along a plane generally transverse to the beam path. 11. The light beam generating device according to claim 10, wherein the pendulum assembly further comprises a damping mechanism. 12. The light beam generating device of claim 10, further comprising a locking mechanism operable to secure the pendulum assembly and prevent pivotal movement thereof. 13. The light beam generating device of claim 12, wherein a first actuator selectively engages and disengages the locking mechanism and selectively energizes and deactivates the light source. 14. A light generating device, characterized in that it comprises: a housing including a first window and a second window; The self-leveling pendulum assembly arranged in the housing includes: ornaments, and a light source operable to generate light on the work surface, wherein the light source emits a beam of light propagating in a first direction; and a redirection assembly disposed within said housing, wherein said redirecting assembly is movable from a first position wherein said assembly allows said light beam to continue propagating in said first direction to wherein said assembly redirects said light beam from said first direction to a second direction the second position of . 15. The light generating device according to claim 14, characterized in that: in the first direction, the light beam is directed out of the first window; and In the second direction, the light beam is directed out of the second window. 16. The light generating device according to claim 15, characterized in that: The housing also includes a third window; the redirection assembly is movable to a third position, wherein the assembly redirects the light beam from the first direction to a third direction; and In the third direction, the light beam is directed through the third window. 17. The light generating device of claim 14, wherein the redirection assembly is further movable to a third position, wherein the redirection assembly redirects the light beam from the first direction to a second position. Three directions. 18. The light generating device of claim 14, wherein the redirection assembly comprises a mirror assembly comprising a first mirror and a second mirror. 19. The light generating device of claim 14, wherein the light source comprises a laser assembly comprising a laser diode, a collimating lens and a line lens. 20. The light generating device of claim 14, wherein the pendulum assembly is pivotable in a plane substantially transverse to the first direction of the light beam. 21. The light generating device of claim 20, further comprising a locking mechanism operable to secure the pendulum assembly to selectively prevent pivotal movement of the pendulum assembly. 22. The light generating device according to claim 14, wherein the pendulum assembly further comprises a damping mechanism. 23. The light generating device of claim 14, further comprising a measurement tool responsive to rotation of the housing about the support surface. 24. The light generating device of claim 23, wherein the measuring tool comprises a protractor. 25. A light generating device, comprising: a housing adapted to contact a substantially vertical work surface; pendulum assembly, which includes: ornaments, and a light source secured to the ornament operable to generate light on the work surface; A measurement tool is responsive to rotation of the housing on the work surface. 26. The light generating device of claim 25, wherein the measuring tool is adapted to measure the angle of deviation of the housing from a normal position. 27. The light generating device according to claim 26, wherein the normal position of the casing is arranged along a line substantially perpendicular to the working surface. 28. The light generating device of claim 26, wherein the measuring tool comprises a protractor. 29. The light generating device of claim 25, wherein the measuring tool comprises a 360° protractor rotatably connected to the housing. 30. The light generating device of claim 29, wherein the protractor includes at least one weight region. 31. The light generating device of claim 25, wherein the measurement means comprises a gravity responsive protractor. 32. The light generating device of claim 25, further comprising mounting means operable to rotatably connect the housing to a substantially vertical work surface such that the housing can be moved from the The normal position is redirected to the off-normal position, thereby moving the light ray from a first position to a second position on the work surface. 33. The light generating device according to claim 32, wherein the measurement tool measures the angle between the first light position and the second light position. 34. A self-horizontal light beam generating device, comprising: case; pendulum assembly, which includes: a rocker swingingly suspended within said housing by a first fixed point, and a light source secured to the ornament, wherein the light source is operable to generate a beam of light along a path; and a beam redirection assembly connected to the housing by a second fixed point, Wherein the redirection assembly is movable from a first position to a second position to selectively redirect the light beam out of the housing. 35. The light beam generating device of claim 34, further comprising a measurement tool responsive to rotation of the housing about the support surface. 36. The light beam generating device of claim 35, wherein the measuring tool comprises a protractor comprising a weight that maintains a constant position with respect to the plumb line of the support surface as the housing is rotated. block area. 37. A hand tool, comprising: tool part; the handle portion; and A light generating device comprising: Self-leveling pendulum assembly, which includes: ornaments, and a light source secured to the ornament, wherein the light source is operable to generate a beam of light along a path; and A beam redirecting assembly movable from a first position to a second position to selectively redirect the beam. 38. The hand tool of claim 37, wherein said rocker member is pivotally suspended within said housing by a first fixed point, and wherein said redirection assembly is rotatably connected to said housing by a second fixed point. the housing.

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