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:
Jun. 29, 2004
Filed:
Feb. 14, 2002
Norihiro Yamamoto, Fukuroi, JP;
Hirofumi Ogata, Kakegawa, JP;
NSK-Warner K.K., Tokyo, JP;
Abstract
An end bearing, a one-way clutch device and a method of manufacturing the end bearing, capable of preventing abrasion or scorching of the end bearing while improving the productivity. The annular end bearing which is interposed between an inner race and an outer race of the one-way clutch device and is in a slidable contact with the inner race or the outer race when it is operated, wherein a recess having the depth of 5 to 30 &mgr;m is formed on a slidable contact surface with inner race or the outer race. The method comprises a blanking step of blanking an annular blank from a metal plate, a recess forming step of forming a recess in a predetermined portion of said blank, and a drawing step of forming a flange on said blank by drawing, wherein the above recess forming step is executed before or after the blanking step, or at the same time with the blanking step.