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:
May. 06, 2008
Filed:
Apr. 27, 2005
Hiroyuki Mori, Nisshin, JP;
Fumio Shimizu, Toyota, JP;
Hideo Tachikawa, Nisshin, JP;
Toshihide Ohmori, Nagoya, JP;
Hiroshi Moritani, Seto, JP;
Mamoru Tohyama, Nagoya, JP;
Yoshio Shimura, Aichi-gun, JP;
Shigeru Hotta, Ama-gun, JP;
Takashi Iseki, Nisshin, JP;
Hiroyuki Mori, Nisshin, JP;
Fumio Shimizu, Toyota, JP;
Hideo Tachikawa, Nisshin, JP;
Toshihide Ohmori, Nagoya, JP;
Hiroshi Moritani, Seto, JP;
Mamoru Tohyama, Nagoya, JP;
Yoshio Shimura, Aichi-gun, JP;
Shigeru Hotta, Ama-gun, JP;
Takashi Iseki, Nisshin, JP;
Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi-gun, JP;
Abstract
A low-friction sliding member is used under a wet condition employing a lubricant, and includes a substrate having a surface, and an amorphous hard carbon film formed on the surface of the substrate for contacting slidably with a mating member. The amorphous hard carbon film includes silicon in an amount of from 1 atomic % or more to 20 atomic % or less, hydrogen in an amount of from 20 atomic % or more to 50 atomic % or less, and the balance of carbon and inevitable impurities, when the entirety is taken as 100 atomic %, and exhibits a surface roughness Rzof 0.8 μm or less. The low-friction sliding member exhibits reduced friction coefficients between itself and mating members, without relying on the adsorption and reaction of additives, included in lubricants, to the amorphous hard carbon films.