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:
Jul. 15, 1997
Filed:
May. 03, 1996
Izumi Ohashi, Fukuroi, JP;
Atsushi Yamashita, Fukuroi, JP;
NTN Corporation, Osaka, JP;
Abstract
A retainer for a needle roller bearing which can prevent a film of lubricating oil from being broken due to its needle roller retaining claws and thus prevent peeling of the needle rollers. Outer-diameter claws and inner-diameter claws are provided on roller guiding surfaces on both sides of each crossbar portion of the retainer to retain the needle rollers in pockets defined between the adjacent crossbars. In the case of an outer-diameter guide type retainer, the outer-diameter claws are provided at a stepped portion formed on the outer-diameter surface of each crossbar. In the case of an inner-diameter guide type retainer, the inner-diameter claws are provided at a stepped portion formed on the inner-diameter surface of each crossbar.