Coplanarity inspection machine

Details Coplanarity inspection machine Coplanarity inspection machine

1989-10-27

1991-02-26

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

33645, G01N 2186

Patent

active

049964399

ABSTRACT:
A signal device for operation on a path including a movable reflector aligned to move along an axis and a light source and light detector positioned to provide a signal trip point when light from the source is reflected by the reflector to the detector at a predetermined location on said axis.

REFERENCES:
patent: 3278023 (1966-10-01), Schneider
patent: 4739175 (1988-04-01), Tamura
patent: 4774768 (1988-10-01), Chiponis
patent: 4814621 (1989-03-01), Soth et al.

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