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:
Aug. 07, 2001
Filed:
Feb. 03, 2000
Kazuhiro Yamashita, Osaka, JP;
Mitsugu Yamaguchi, Osaka, JP;
Exedy Corporation, Osaka, JP;
Abstract
A lockup device,is provided for a torque converter,that allows for the use of larger torsion springs,. The lockup device,of the torque converter,includes a piston,and a damper mechanism,. The piston,constitutes a clutch together with a front cover,. The damper mechanism,includes a drive plate,, a driven plate,and coil spring assemblies,. The drive plate,is secured to one axial side surface of the piston,. The coil spring assemblies,couple the drive plate,and the driven plate,in a rotational direction. Cutouts,are formed in the drive plate,at positions corresponding to positions of the coil spring assemblies,. Each coil spring assembly,is received within the corresponding one of the cutout,and is axially supported by the one axial side surface of the piston
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile