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:
Sep. 19, 2006
Filed:
Jul. 26, 2004
Hiroshi Mizukami, Neyagawa, JP;
Hiroshi Mizukami, Neyagawa, JP;
Exedy Corporation, Osaka, JP;
Abstract
A damper mechanism for a lockup deviceis a device for mechanically transmitting a torque in a torque converter. A coil springis arranged in first and second windowsandoverlapping with each other, and is compressed in accordance with the relative rotation of drive and driven membersand. A maximum torsion angle θ m is defined when the coil springsare compressed to a maximum extent by relative rotation between the drive and driven membersand. Each of the first and second windowsandhas an outer periphery longer than an inner periphery. Each endsandon the circumferential ends of the first and second windowsandform an angle θ with respect to a center line extending through a center O of the damper mechanism and a circumferential center Cor Cof the first or second windowor, and this angle θ is in a range between 0.05 and 0.60 times as large as the maximum torsion angle θ m.