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:
Jun. 14, 2011
Filed:
Dec. 26, 2007
Masahiro Kobayashi, Fukuroi, JP;
Hiroyuki Kinpara, Fukuroi, JP;
Masahiro Kobayashi, Fukuroi, JP;
Hiroyuki Kinpara, Fukuroi, JP;
NSK-Warner K.K., Tokyo, JP;
Abstract
A friction plate for a wet-type multiplate clutch can include a core plate and friction linings bonded on opposite sides of the core plate, respectively. Each of the friction linings can include plural segment pieces bonded at angular intervals on a corresponding opposite side. The segment pieces can each include at least one first oil groove and at least one second oil groove. The first oil groove opens to a radially-inner side of its corresponding segment piece and has a closed end portion located in a radially-intermediate part of the corresponding segment piece. The second oil groove opens to a radially-outer side of the corresponding segment piece and has a closed end portion located in another radially-intermediate part of the corresponding segment piece. Adjacent ones of the segment pieces are provided, in radially-middle parts of opposing side walls thereof, with angularly-extending recessed portions, respectively.