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. 27, 2004
Filed:
Sep. 19, 2002
Yasunori Yokota, Kanagawa-ken, JP;
Nippon Thompson Co., Ltd., Tokyo, JP;
Abstract
A roller bearing cage having load capacity large enough to bear severe conditions imposed by high-speed engines, with even lighter in weight. In the roller bearing cage, the cage bars are each made up of axially opposite thick ends and a slim mid-area lying midway the thick ends to define a recess between them. The cage bar has radially outside projections on an outside periphery thereof while radially inside projections on an inside periphery thereof to keep the rollers against escape out of the cage. The radially inside projections extend circumferentially of the cage, especially, at a circular edge of the thick end, which lies nearby or neighboring or closer to the recess. The radially inside projections are made by forcing material at the edge to move circumferentially by plastic flow into the projections that extend circumferentially towards pockets on a radially inside circular surface of the thick end.