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:
Jun. 12, 2007
Filed:
Mar. 14, 2005
Junichi Doi, Hiroshima-ken, JP;
Shinya Kamada, Hiroshima-ken, JP;
Norio Iwashita, Hiroshima-ken, JP;
Kazuhito Maeda, Neyagawa, JP;
Junichi Doi, Hiroshima-ken, JP;
Shinya Kamada, Hiroshima-ken, JP;
Norio Iwashita, Hiroshima-ken, JP;
Kazuhito Maeda, Neyagawa, JP;
Mazda Motor Company, Hiroshima, JP;
Exedy Corporation, Osaka, JP;
Abstract
A transmission apparatus is disclosed which can improve the locking response speed of a lockup clutch when an engine is driven by the output side, without largely changing the structure of the lockup clutch or the like. In the lockup clutch of this transmission apparatus, fixing portions () for a support member () of a damper spring () are fixed to a plurality of portions on a predetermined circumference of a piston () which are inside a friction member (). Projections () extending in the radial direction are formed, at those positions of the lockup piston () which are inside the friction member () and sandwiched by the fixing portions () for the support member () of the damper spring (), to project toward a front cover.