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:
May. 02, 2017
Filed:
Mar. 18, 2014
Exedy Corporation, Neyagawa-shi, Osaka, JP;
Naoki Tomiyama, Neyagawa, JP;
EXEDY Corporation, Osaka, JP;
Abstract
A lock-up device for a torque converter is provided in which torsion springs are appropriately compressed and deformed even when the torsion springs to be used have a shape elongated in a circumferential direction of the lock-up device. The lock-up device includes a drive plate, torsion springs and a driven plate. The drive plate has a fixation part, a plurality of torque transmission parts and a plurality of receiver parts. The fixation part is fixed to a piston. The plural torque transmission parts are formed to extend from the fixation part to an outer peripheral side and contact rotation-directional ends of the torsion spring. The plural receiver parts are formed on an outer peripheral part of the fixation part, support the inner peripheral side parts of the torsion springs on an engine side with respect to the axial centers of the torsion springs, and extend toward a transmission.