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:
Jul. 17, 2007
Filed:
Dec. 21, 2005
Hirotaka Fukushima, Hirakata, JP;
Hirotaka Fukushima, Hirakata, JP;
Exedy Corporation, Osaka, JP;
Abstract
A damper mechanismis provided to transmit torque while absorbing and damping torsional vibrations. A small coil springachieves characteristics of a low rigidity in a small torsion angle region of the torsion characteristics when compressed by rotary members. A coil springachieves characteristics of a high rigidity in a large torsion angle region of the torsion characteristics when compressed by the rotary members rotating relatively to each other. A frictional resistance generating mechanismgenerates a frictional resistance while each spring is being compressed. Owing to a rotating-direction space, the frictional resistance generating mechanismdoes not operate in the second stage of the torsion characteristics and also does not in the first stage while a torsion angle is in a predetermined range.