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:
Mar. 17, 1992
Filed:
Dec. 10, 1990
Applicant:
Inventors:
Assignees:
Koyo Seiko Co., Ltd., both of, JP;
Utsunomiya Kiki Co., both of, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
384573 ; 384572 ;
Abstract
A cage for use in a roller bearing, which is made of metal, comprises thin portions formed axially centrally of the cage, thick portions formed at opposite sides of the thin portions, a plurality of pockets in which the rollers are received formed extending axially and spaced apart from one another circumferentially, and rugged portion including recessed portions formed in the outer peripheral surface of the at opposite sides of the pockets, and raised portions formed between two adjacent recessed portions and each having a cylindrical surface with a constant radius of curvature.