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:
Apr. 29, 2003
Filed:
Jun. 20, 2001
Applicant:
Inventors:
Yoshiki Ishikawa, Tochigi, JP;
Hideyo Iwama, Tochigi, JP;
Yoshio Naito, Tochigi, JP;
Takashi Takakura, Hino, JP;
Kousuke Ito, Hino, JP;
Tatsuya Suzuki, Hino, JP;
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F32B 1/504 ;
U.S. Cl.
CPC ...
F32B 1/504 ;
Abstract
A cylinder liner and a piston ring adapted to be combined therewith in an internal combustion engine are provided that have excellent abrasion resistance, where iron oxide film is formed at least on a part of the inner circumferential surface of the cylinder liner, and metallic nitride film is formed at least on a sliding surface of the piston ring sliding along the cylinder liner.