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:
May. 22, 2012
Filed:
Jan. 27, 2009
Terasu Harashima, Toyota, JP;
Shundou Yamaguchi, Anjo, JP;
Terasu Harashima, Toyota, JP;
Shundou Yamaguchi, Anjo, JP;
Toyota Jidosha Kabuskiki Kaisha, Toyota-shi, JP;
Aisin AW Co., Ltd., Anjo-Shi, JP;
Abstract
An annular frictional engaging piston includes an annular pressure apply portion which pushes a frictional engagement element in an axial direction against urging force of a return spring that urges in a direction opposite the frictional engagement element, and which has a cutout portion where a portion in the circumferential direction has been removed to avoid interference between the piston and another member. A partially removed region is provided, and a mounting hole for mounting the return spring on the piston is provided in a region other than the partially removed region.