Control means

Details Control means Control means

1976-08-02

1978-09-26

Sacher, Paul A.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

351 1, 351 6, G01N 2130, A61B 300, A61B 310

Patent

active

041173414

ABSTRACT:
An occluder for interrupting an energy beam is used to control the direction of travel and to stop a moveable member at a reference position from any position remote thereto.

REFERENCES:
patent: 1976611 (1934-10-01), Gulliksen
patent: 3673414 (1972-06-01), Taniguchi

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