A positioning device for a power tool. A tool, such as a drywall screw gun, is equipped with a projector which projects two light rays, which form a "V." The axis of a screw driven by the gun lies in the plane of the "V," as by bisecting the "V." If the two rays are positioned so that they illuminat
A positioning device for a power tool. A tool, such as a drywall screw gun, is equipped with a projector which projects two light rays, which form a "V." The axis of a screw driven by the gun lies in the plane of the "V," as by bisecting the "V." If the two rays are positioned so that they illuminate a framing member, such as a 2.times.4 stud, then this axis will intersect that stud. In effect, (1) the stud becomes the horizontal base of a triangle, (2) the legs of the "V" become the sides, and (3) the axis becomes the altitude. The altitude (axis) necessarily intersects the base (stud). This intersection occurs whether or not a sheet of material, such as drywall, covers part of the stud, provided extremeties of the stud are exposed for the illumination described above. Thus, the location of the concealed part of the stud can be determined, despite the fact that a sheet of material obscures that part.
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[ What is claimed is:] [1.]1. Apparatus, comprising:a) a drywall screw gun (500), which includes a slip clutch, having a forward direction defined thereon, and havingi) a chuck axis (50);ii) a handle (HH) having a handle-end (BE), which is displaced a distance DD of at least 3.0 inches from the chuc
[ What is claimed is:] [1.]1. Apparatus, comprising:a) a drywall screw gun (500), which includes a slip clutch, having a forward direction defined thereon, and havingi) a chuck axis (50);ii) a handle (HH) having a handle-end (BE), which is displaced a distance DD of at least 3.0 inches from the chuck axis (50);b) projection means, supported by the gun (500), for projecting two laser rays which follow two respective axes which intersect at a point, thereby defining a V, such thati) the chuck axis (50) is co-planar with the laser rays,ii) the chuck axis bisects the V, andiii) the vertex angle of the V is between 90 and 130 degrees.
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이 특허에 인용된 특허 (7)
Bernicky Joseph (7931 Austin St. Schererville IN 46375), Alignment sight for hand drills.
Holbrook, David S.; Adams, Christopher P.; Gregorich, Brent; Rajani, Umesh; Whitmire, Jason Porter; Bublitz, Scott D.; Hessenberger, Jeffrey C.; Scott, John S.; Huggins, Mark; Mergener, Matthew J., Electromagnetic scanning imager.
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