Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1989-06-28
1990-10-23
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
25023114, G01D 534
Patent
active
049654454
ABSTRACT:
A rotation angle detector comprises a case housing a rotary shaft, a detection unit including a detection element and a processing circuit, and plural projections provided on an outside circumferential surface of the detection unit so as to put in contact with an inside circumferential surface of the case.
REFERENCES:
patent: 4031441 (1977-06-01), Garrett
patent: 4182953 (1980-01-01), Hurley
patent: 4389902 (1983-06-01), Kataoka
Ikeuchi Masayuki
Okamura Koichi
Hsia Sherrie
Mitsubishi Denki & Kabushiki Kaisha
Nelms David C.
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