The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 14, 1987
Filed:
Aug. 24, 1984
Fuji Electric Co., Ltd., Kanagawa, JP;
Fuji Electric Corporate Res. & Dev. Ltd., Kanagawa, JP;
Abstract
A rotational angle detecting device includes a rotatable plate attached to a shaft of a rotatable motor having a plurality of windows located at a first angular pitch and at a selected circumference with respect to the shaft, a light source, a stationary plate including first and second photoelectric detecting elements at a second pitch and the selected circumference, and electrical conductors connecting the first detecting elements in parallel and the second detecting elements in parallel such that the sum of the electrical signals produced by the photoelectric detecting elements are used to generate digital signals describing the rotational movement of the shaft with respect to the stationary plate.