Tilt limiting detecting apparatus

Details Tilt limiting detecting apparatus Tilt limiting detecting apparatus

1976-10-22

1978-08-29

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

33366, G01D 534

Patent

active

041106091

ABSTRACT:
A tilt limit detecting apparatus which includes an elongated vial containing an opaque liquid with a bubble therein and light source-photo transistor pairs at each end aligned to intersect the bubble when the vial is tilted and in which the vial has a cross section which results in the optical axes between the light sources and photo transistors intersecting the vial at an angle which at least approaches 90.degree..

REFERENCES:
patent: 3204233 (1965-08-01), Olliff
patent: 3324564 (1967-06-01), Wright
patent: 3813556 (1974-05-01), Beer et al.
patent: 3863067 (1975-01-01), Gooley

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