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:
Nov. 19, 2002
Filed:
Nov. 15, 2000
Hiroshi Uehara, Hirakata, JP;
Yasuyuki Hashimoto, Neyagawa, JP;
Exedy Corporation, Neyagawa, JP;
Abstract
A damper disk assembly is provided for use in a clutch device that suppresses wearing and breakage of a spring seat during operation of a clutch. The damper disk assembly has a pair of plates 5 and 6 elastically coupled to the hub flange 8 by a damper mechanism 4. The damper mechanism 4 includes a plurality of coil spring assemblies 13 having a large coil spring 30, a small coil spring 31 and a pair of spring seats 64. The paired spring seats 64 are arranged on the circumferentially opposite ends of the small coil spring 31. The hub flange 8 is a plate member provided with spring accommodating openings 21. The clutch and retaining plates 5 and 6 are fixed together such that they are axially spaced by a predetermined distance with the flange 8 disposed therebetween. The clutch and retaining plates 5 and 6 are provided with spring accommodating portions 11 in positions corresponding to the openings 21. The small coil springs 31 are disposed within the openings 21 and portions 11 for transmitting a torque between the flange 8 and the plates 5 and 6. The spring seats 64 have support portions 65 that support the circumferentially opposite ends of the spring 31. The support portions 65 of the spring seats 64 are supported by the circumferentially opposite ends of the opening 21 and the portion 11. The portion 11 is provided at its circumferentially opposite ends with spring seat receiving portions 32 extended axially, and having an axial length larger than the axial thickness of each of the plates and 6 for contact with the support portion 65 of the spring seat 64.