Apparatus for automatically determining the position at which a

Details Apparatus for automatically determining the position at which a Apparatus for automatically determining the position at which a

1979-12-05

1981-09-29

Buczinski, S. C.

Optics: measuring and testing

Angle measuring or angular axial alignment

With photodetection remote from measured angle

33309, 33313, 175 45, 356148, 356248, G01B 1126, E21B 2516

Patent

active

042919789

ABSTRACT:
A rotating target contains an appropriately shaped section of photoelectric material which detects the position of a beam of light which is incident on the target. The position of the beam is determined in terms of its distance from the center of rotation of the target and by its angular position relative to the vertical. The vertical direction is simultaneously determined relative to the rotating target using a gravity operated reference.

REFERENCES:
patent: 2184931 (1939-12-01), Straatman et al.
patent: 2317632 (1943-04-01), Miller
patent: 2670179 (1954-02-01), Natland et al.
patent: 3916186 (1975-10-01), Raser
patent: 3972621 (1976-08-01), Eisenkopf et al.
patent: 4172662 (1979-10-01), Vogel
patent: 4178505 (1979-12-01), Skagerlund

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