Tilt detector with pyramidal surface

Details Tilt detector with pyramidal surface Tilt detector with pyramidal surface

1981-09-08

1984-05-22

Evans, F. L.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

33366, G01D 534, G01C 906

Patent

active

044503539

ABSTRACT:
A tilt detecting device having an optical axis extending from a light source to a light responsive device, a spherical opaque body, and a basin, generally symmetrical about the axis and having a concave bottom configured as the surfaces of planes intersecting along lines passing through a common point on the axis, for supporting the body for rolling movement generally transverse to the axis.

REFERENCES:
patent: 2303360 (1942-12-01), Irwin et al.
patent: 2540974 (1951-02-01), Warren
patent: 3097565 (1963-07-01), Kupelian
patent: 3630168 (1971-12-01), Findlay

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