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. 07, 2013
Filed:
May. 20, 2011
Tetsuya Shimizu, Anjo, JP;
Kazuki Kojima, Kariya, JP;
Kenichi Tsuchida, Nishio, JP;
Naoyuki Fukaya, Okazaki, JP;
Kazunori Ishikawa, Toyota, JP;
Tetsuya Shimizu, Anjo, JP;
Kazuki Kojima, Kariya, JP;
Kenichi Tsuchida, Nishio, JP;
Naoyuki Fukaya, Okazaki, JP;
Kazunori Ishikawa, Toyota, JP;
Aisin AW Co., Ltd., Aichi-ken, JP;
Abstract
A hydraulic circuit for supplying hydraulic pressure to frictional engagement elements in an automatic transmission including an oil passage connecting an output port through which a drive pressure is output, and a second signal pressure port, of a second clutch application relay valve, and an oil passage connecting an output port through which a modulator pressure is output and the second signal pressure port, are formed in a valve body and arranged such that it is possible to open the oil passage, as well as close the oil passage, with an oil passage closing member. With the hydraulic circuit it is possible to change a formed speed in response to a shift operation when a shift, after being operated from a travel position to a non-travel position, is returned again from the non-travel position, at a time of failure.