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:
Oct. 26, 2004
Filed:
Aug. 22, 2002
Junya Ooitsu, Osaka, JP;
Hiroshi Toyota, Osaka, JP;
Koyo Seiko Co., Ltd., Osaka, JP;
Abstract
Each of resin cage ( ) is injection-molded of a mixture material containing a thermoplastic resin selected as a material excellent in outgassing characteristic, a proper amount of reinforcing fiber, and a proper amount of a lubricating component. A lubricating film ( ) made of a fluorine-containing polymer having a functional group is deposited on at least rolling surfaces and/or sliding surfaces of constituent members (inner and outer races ( and ), rolling elements ( ) and cage ) of a bearing. That is, the lubricating film ( ) makes lubricity good at an early stage of rotation, so that incipient abrasion of the cage ( ) can be suppressed. Hence, stabilization of operation with the passage of time can be exhibited on the basis of synergistic action of the lubricating film ( ) and micro wear powder generated from the cage ( ).