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:
Feb. 09, 2016
Filed:
Oct. 09, 2013
Mazda Motor Corporation, Hiroshima, JP;
Mazda Motor Corporation, Hiroshima, JP;
Abstract
A first piston () that presses friction plates () is fitted in a second piston () in such a manner as to be movable together with the second piston and relatively movable with respect to the second piston. An A-chamber () and a B-chamber () each configured to move a respective one of the first piston () and the second piston () by a stroke toward a side close to the friction plates, a return spring () biasing the second piston () on a side away from the friction plates, and a stopper member () configured to prevent a stroke of the second piston () toward the side close to the friction plates from becoming greater than a given value (W) are provided. Engagement responsiveness of a L-R brake () does not deteriorate even when a clearance (V) in the friction plates () increases.