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:
Oct. 06, 2015
Filed:
Mar. 22, 2012
Yoshiyuki Hagihara, Nishinomiya, JP;
Yoshiyuki Hagihara, Nishinomiya, JP;
EXEDY CORPORATION, Osaka, JP;
Abstract
A friction member to be used for a lock-up clutch device includes a plurality of friction portions and a plurality of grooves. The plural friction portions are disposed in alignment in a circumferential direction. The plural grooves are formed between or among the plural friction portions and penetrate therebetween or thereamong from the inner peripheral side to the outer peripheral side. Further, each of the plural grooves includes an inner peripheral groove and an outer peripheral groove. The inner peripheral groove is formed in a V-shape, and includes a first groove that is disposed on the inner peripheral side and has an opening, and a second groove that is disposed on the outer peripheral side and continues to the first groove. The outer peripheral groove continues to the outer peripheral end of the second groove of the inner peripheral groove, and radially extends in the outer peripheral direction.