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. 19, 2010
Filed:
Nov. 01, 2006
Hideki Matsumoto, Fukuroi, JP;
Hideaki Takabayashi, Fukuroi, JP;
Hideki Matsumoto, Fukuroi, JP;
Hideaki Takabayashi, Fukuroi, JP;
NSK-Warner K.K., Tokyo, JP;
Abstract
The present invention provides a lock-up clutch mechanism for a torque converter, comprising a lock-up piston and a front cover opposed to the lock-up piston and wherein a friction material having a friction surface is secured to one of the lock-up piston and the front cover, and the friction surface includes an outer peripheral friction surface which is engaged at an initial stage of engagement between the lock-up piston and the front cover and an inner peripheral friction surface which is engaged upon tightening, and the outer peripheral friction surface has a taper with respect to the inner peripheral friction surface, and the inner peripheral friction surface and the outer peripheral friction surface are subjected to a cutting operation.