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:
Aug. 10, 2010
Filed:
Aug. 05, 2004
Jean Michel Martin, Chazay d'Azergues, FR;
Saihei Kano, Yokohama, JP;
Makoto Kano, Yokohama, JP;
Yoshiteru Yasuda, Yokohama, JP;
Yusuke Okamoto, Kanagawa, JP;
Yutaka Mabuchi, Yokohama, JP;
Takafumi Ueno, Yokohama, JP;
Jean Michel Martin, Chazay d'Azergues, FR;
Saihei Kano, Yokohama, JP;
Makoto Kano, Yokohama, JP;
Yoshiteru Yasuda, Yokohama, JP;
Yusuke Okamoto, Kanagawa, JP;
Yutaka Mabuchi, Yokohama, JP;
Takafumi Ueno, Yokohama, JP;
Nissan Motor Co., Ltd., Yokohama-shi, JP;
Abstract
A low-friction sliding member such as a piston, a piston ring, a piston skirt section and a cylinder liner section of an internal combustion engine. The low-friction sliding member includes a base material having a surface. A hard carbon thin film is formed at at least a part of the surface of the base material. Here, a tribo-film having at least one functional group selected from the group consisting of ether linkage, oxido and hydroxyl group is formed on the hard carbon thin film when the hard carbon thin film is in slidable contact with an opposite member in presence of an organic oxygen-containing compound.