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:
Dec. 12, 2006
Filed:
Aug. 06, 2004
Shin Nomura, Yokohama, JP;
Takahiro Miura, Yokohama, JP;
Makoto Kano, Yokohama, JP;
Yutaka Mabuchi, Yokohama, JP;
Takahiro Hamada, Yokohama, JP;
Miki Murakami, Huntington Beach, CA (US);
Shin Nomura, Yokohama, JP;
Takahiro Miura, Yokohama, JP;
Makoto Kano, Yokohama, JP;
Yutaka Mabuchi, Yokohama, JP;
Takahiro Hamada, Yokohama, JP;
Miki Murakami, Huntington Beach, CA (US);
Nissan Motor Co., Ltd., Yokohama, JP;
Abstract
A valve train for an internal combustion engine is comprised of a lubricating oil, and a camshaft which is made of an iron-based material and comprises a cam lobe and a camshaft journal. The camshaft slidingly moves on a counterpart thereof through the lubricating oil. A hard carbon film is formed on at least one of a sliding portion of the camshaft and the counterpart made of an iron-based material. A hydrogen amount of the hard carbon film is 10 atomic percent or less.