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. 12, 2004
Filed:
Jun. 24, 2003
Takuya Fujimine, Anjo, JP;
Akira Fukatsu, Anjo, JP;
Kazuyuki Noda, Anjo, JP;
Masahiko Ando, Anjo, JP;
Kazutoshi Nozaki, Toyota, JP;
Toshiki Kanada, Toyota, JP;
Other;
Abstract
In an oil pressure control device, a clutch apply control valve is provided in an oil passage between a control valve and a linear solenoid valve. The clutch apply control valve is changed between a first position where an input port and an output port are connected so as to supply a control pressure to a control oil chamber, and a second position where another input port and the output port are connected so as to supply the control oil chamber with a D range pressure, instead of the control pressure. Therefore, the clutch apply control valve makes it possible to reliably supply an engaging pressure to a clutch even in the case of a failure of the control valve or the like to ensure good responsiveness of the clutch.