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:
Feb. 06, 2007
Filed:
Aug. 31, 2004
Shun Kitahara, Shizuoka, JP;
Tomoyuki Miyazaki, Shizuoka, JP;
Hiroaki Matsushima, Shizuoka, JP;
Kazuyuki Fujita, Shizuoka, JP;
Shun Kitahara, Shizuoka, JP;
Tomoyuki Miyazaki, Shizuoka, JP;
Hiroaki Matsushima, Shizuoka, JP;
Kazuyuki Fujita, Shizuoka, JP;
NSK-Warner Kabushiki Kaisha, Tokyo, JP;
Abstract
A friction plate for a wet type multiplate clutch has a substantially ring-shaped core plate and a friction member attached to the core plate. The friction member has a surface which includes a passage formed on a surface of the friction member, the passage extending from an inner peripheral edge of the friction member to an outer peripheral edge of the friction member, and a groove having an opened end which opens to the inner peripheral edge of the friction member and a closed end which is closed at a middle of the surface of the friction member. A width of the groove decreases towards a direction to the outer peripheral edge from the inner peripheral edge of the friction member.