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:
Dec. 15, 1992
Filed:
Mar. 25, 1991
Makoto Nohara, Osaka, JP;
Tsuyoshi Okumura, Osaka, JP;
Koyo Seiko Co., Ltd., Osaka, JP;
Abstract
A bearing apparatus is capable of detecting rotational speed of a driven shaft of an automobile. The bearing apparatus has a rotational speed detector and a detected member. The detected member is fixed to an inside member rotating with the driven shaft. The detected member has a hollow cylindrical portion which extends in an axial direction and is provided with a plurality of projections at even intervals in a circumferential direction on its inner peripheral surface. The rotational speed detector is fixed to a cover for covering the rotational speed detector and the detected member. A detector portion of the rotational speed detector is positioned within the hollow cylindrical portion so as to oppose the projections.