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:
Mar. 16, 2010
Filed:
Aug. 30, 2006
Junji Ando, Kariya, JP;
Naoyuki Sakai, Anjo, JP;
Toshifumi Sakai, Anjo, JP;
Toshiyuki Saito, Toyoake, JP;
Hajime Fukami, Obu, JP;
Kazuyuki Nakanishi, Seto, JP;
Hiroyuki Mori, Nisshin, JP;
Hideo Tachikawa, Nisshin, JP;
Junji Ando, Kariya, JP;
Naoyuki Sakai, Anjo, JP;
Toshifumi Sakai, Anjo, JP;
Toshiyuki Saito, Toyoake, JP;
Hajime Fukami, Obu, JP;
Kazuyuki Nakanishi, Seto, JP;
Hiroyuki Mori, Nisshin, JP;
Hideo Tachikawa, Nisshin, JP;
JTEKT Corporation, Osaka-shi, JP;
Abstract
A drive force transmission device has an outer clutch plate and an inner clutch plate, which are rotatable relative to each other about a common rotational axis. The inner and outer clutch plates become frictionally engaged with each other with lubricant oil provided in between. The outer and inner clutch plates each have a sliding surface. The sliding surfaces face each other. A diamond-like carbon film is formed on the sliding surface of the outer clutch plate. Fine grooves are formed in the sliding surface of the inner clutch plate. The proportion of the sliding area to the sliding surface of the inner clutch plate at the initial stage of use is 55 to 90%.