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:
Nov. 08, 2005
Filed:
Nov. 15, 2002
Eiji Hirai, Kanagawa, JP;
Mitsuhiro Okuhata, Kanagawa, JP;
Nobuo Kino, Kanagawa, JP;
Keizo Otani, Kanagawa, JP;
Eiji Hirai, Kanagawa, JP;
Mitsuhiro Okuhata, Kanagawa, JP;
Nobuo Kino, Kanagawa, JP;
Keizo Otani, Kanagawa, JP;
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A rotary member such as a member of a bearing, a rotating member of a transmission or a gear for a motor vehicle, includes a base region of a ferrous base material such as a steel. The rotary member is formed with a hydrogen blocking layer formed in a contact surface for contacting with a mating body in a relative motion. The hydrogen blocking layer includes a concentrated portion formed in the base region and made of a substance lower in hydrogen diffusion coefficient than the base material.