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:
Sep. 07, 2010
Filed:
Nov. 02, 2006
Tomoyuki Miyazaki, Fukuroi, JP;
Ritsuo Toya, Fukuroi, JP;
Tsuyoshi Hirayanagi, Fukuroi, JP;
Masahiro Kobayashi, Fukuroi, JP;
Tomoyuki Miyazaki, Fukuroi, JP;
Ritsuo Toya, Fukuroi, JP;
Tsuyoshi Hirayanagi, Fukuroi, JP;
Masahiro Kobayashi, Fukuroi, JP;
NSK Warner K.K., Tokyo, JP;
Abstract
The present invention provides a friction plate having a friction surface formed by adhering a friction material to a substantially annular core plate and wherein the friction surface is provided with an oil passage communicated with inner and outer peripheral edges of the friction plate, a first oil groove having an opening portion opened to the inner peripheral edge of the friction plate and an end portion terminating at a position between the inner and outer peripheral edges, and a second first oil groove having an opening portion opened to the outer peripheral edge of the friction plate and an end portion terminating at a position between the inner and outer peripheral edges.