Workpiece center and edge finder having visual light indicator

Details Workpiece center and edge finder having visual light indicator Workpiece center and edge finder having visual light indicator

2006-11-21

2008-12-16

Bennett, G. Bradley (Department: 2841)

Geometrical instruments

Straight-line light ray type

Alignment device

C033S642000, C033SDIG021

Reexamination Certificate

active

07464478

ABSTRACT:
A precise center and edge finder in which the position of the center or edge of a workpiece or an aperture thereon is directly located with respect to a work tool. In one embodiment, the finder has a shank for attachment to a chuck. In another embodiment, the shank has a chamber for receiving a nozzle or other projecting work component. A laser diode directs a beam of light toward the workpiece. The beam of light projects a fine dot in direct alignment with the centerline of the work tool to the center or edge of the workpiece. A dot adjusting unit can be used to adjust the intensity and size of the dot. Alternatively, the finder projects a ring-shaped light to directly align an aperture on the workpiece with the work tool or a cross-hair shaped light to align the workpiece with an x-y axis of the work tool.

REFERENCES:
patent: 4078869 (1978-03-01), Honeycutt
patent: 5245759 (1993-09-01), Pearson
patent: 5276975 (1994-01-01), Fisher
patent: 6050816 (2000-04-01), Phoenix et al.
patent: 6124935 (2000-09-01), Matthews
patent: 6643019 (2003-11-01), Jeanneret
patent: 6796038 (2004-09-01), Humphries
patent: 7140118 (2006-11-01), Adrian
patent: 2002/0038513 (2002-04-01), Kallesen et al.
patent: 2006/0112581 (2006-06-01), Nortmann et al.

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