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:
Jul. 19, 2011
Filed:
Feb. 27, 2008
Hideaki Suzuki, Shizuoka-ken, JP;
Hiroyuki Kinpara, Shizuoka-ken, JP;
Masahiro Kobayashi, Shizuoka-ken, JP;
Tsuyoshi Hirayanagi, Shizuoka-ken, JP;
Hideaki Suzuki, Shizuoka-ken, JP;
Hiroyuki Kinpara, Shizuoka-ken, JP;
Masahiro Kobayashi, Shizuoka-ken, JP;
Tsuyoshi Hirayanagi, Shizuoka-ken, JP;
NSK-Warner K.K., Tokyo, JP;
Abstract
A friction plate for a wet-type multiplate clutch is provided with a core plate and friction linings bonded on opposite sides of the core plate, respectively. Each of the friction linings is composed of plural segment pieces each having at least one first oil groove and at least one second oil groove. The first oil groove opens to a radially-inner side of the friction plate and has a closed end portion located in a radially-intermediate part of the friction lining, and the second oil groove opens to a radially-outer side of the friction plate and has a closed end portion located in another radially-intermediate part of the friction lining. The second oil groove has an opening flared outwardly in a radial direction.