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. 30, 2004
Filed:
Jan. 11, 2002
Applicant:
Inventors:
Hiroshi Uehara, Hirakata, JP;
Yasuhiko Fujita, Moriyama, JP;
Assignee:
Exedy Corporation, Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 3/66 ;
U.S. Cl.
CPC ...
F16D 3/66 ;
Abstract
A damper mechanism that has a simplified structure and maintains torsional characteristics of a conventional damper mechanism is provided. The damper mechanism is equipped with an input rotating body , an output rotating body , and two or more coil spring assemblies . The two or more coil spring assemblies elastically couple the input rotating body and the output rotating body together in a rotational direction and serve to absorb twisting torque. Each coil spring assembly has at least one coil spring whose center axis is roughly linear. At least one of coil spring assemblies absorbs 35% to 50% of the twisting torque.