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:
Mar. 28, 2000
Filed:
Aug. 19, 1998
Shinji Fujimoto, Hirakata, JP;
Masahiro Maeda, Shijounawate, JP;
Exedy Corporation, Osaka, JP;
Abstract
A lock-up damper or clutch 7 of a torque converter 1 is provided with a plurality of coil spring assembly 32 for elastically coupling the piston 22 of the torque converter 1 to a turbine 4 of the torque converter 1. The coil spring assembly 32 basically includes a large coil spring 40 and two spring seats 42. The coil spring assembly 32 is designed to prevent a reduction of the performance of the coil spring 40 and to absorb a torsion vibration in the lock-up damper 7 for the torque converter 1. Each of the spring seats 42 is disposed one of the sides of the large coil spring 40. Each of the spring seats 42 has a seat part 43, a first protrusion 44 and a second protrusion 45. The seat part 43 contacts the end of the large coil spring 40. The first protrusion 44 extending from the seat part 43 and is pressed-fitted into an end turn of the large coil spring 40.