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:
Oct. 21, 2008
Filed:
Jan. 15, 2008
Akihiko Kita, Anjo, JP;
Shigeo Tsuzuki, Anjo, JP;
Hiroyuki Nozaki, Anjo, JP;
Yukitoshi Ogawa, Toyota, JP;
Takayuki Ishikawa, Toyota, JP;
Hironobu Imaizumi, Aikoh-gun, JP;
Akihiko Kita, Anjo, JP;
Shigeo Tsuzuki, Anjo, JP;
Hiroyuki Nozaki, Anjo, JP;
Yukitoshi Ogawa, Toyota, JP;
Takayuki Ishikawa, Toyota, JP;
Hironobu Imaizumi, Aikoh-gun, JP;
Abstract
A cushion plate is provided, for example, between a piston of a hydraulic servo and an adjacent friction plate in a frictional engagement element of an automatic transmission. The cushion plate is deflected by a pressing force of the piston to absorb an engagement shock. The cushion plate includes a main body portion formed into a belleville-spring shape, and a plurality of pawls that extend from the outer periphery of the main body for spline engagement with a member that is splined to, for example, the friction plate. A side wall of each pawl is formed with a curved recess extending circumferentially of the cushion plate and located adjacent the juncture (base) of the pawl at the outer periphery of the main body.