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:
Jul. 09, 1999
Yasuyuki Hashimoto, Neyagawa, JP;
Exedy Corporation, Osaka, JP;
Abstract
A clutch disk assembly (,) includes an input rotary member (,), an output rotary member (,), a damper mechanism (,) and a large friction mechanism (,). The damper mechanism couples the input and output rotary members (,) and (,) together in a rotating direction. The damper mechanism exhibits torsion characteristics having differing first stage and second stage responses such that in the second stage a higher degree of rigidity is exhibited than in the first stage. In the second stage when small levels of vibrations are dampened, the response characteristics in response to positive direction rotary displacement between the input and output rotary members differs from the response characteristics exhibited as a result of negative direction relative rotary displacement. Specifically, in the positive direction, the large friction mechanism (,) is prevented from operating in a first angular range within the second stage. In the negative direction, the large friction mechanism (,) is prevented from operating in a second angular range in the second stage. The first and second angular ranges differ.