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:
Jul. 03, 2012
Filed:
Jan. 20, 2010
Ikuo Hirose, Fujinomiya, JP;
Ikuo Hirose, Fujinomiya, JP;
JATCO Ltd, Fuji-shi, JP;
Abstract
A dual purpose pressure adjusting valve provides a hydraulic pressure upon failure of electric power supply and controls the hydraulic pressure selectively directed toward a high clutch and a low & reverse brake using a line pressure, that bypasses a manual valve, as a source pressure. A switching valve switches hydraulic pressure feeding passages of the high clutch and low & reverse brake in response to selection of a range position between D-range position and R-range position. A first rotation member and a transmission input shaft are connected to each other when the high clutch is engaged. The first rotation member is a member other than a transmission output gear. A high clutch inhibitor valve uses D-range pressure PD as a signal pressure and is arranged between the switching valve and the high clutch. The high clutch inhibitor valve opens a communication between the dual purpose pressure adjusting valve and the high clutch when the signal pressure is applied thereto and doses the communication between the dual purpose pressure adjusting valve and the high clutch when the signal pressure is not applied thereto.