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:
Jan. 29, 2013
Filed:
Dec. 28, 2009
Tetsuya Shimizu, Anjo, JP;
Kazuhiko Kato, Kariya, JP;
Kenichi Tsuchida, Hazugun, JP;
Kazunori Ishikawa, Toyota, JP;
Tetsuya Shimizu, Anjo, JP;
Kazuhiko Kato, Kariya, JP;
Kenichi Tsuchida, Hazugun, JP;
Kazunori Ishikawa, Toyota, JP;
Aisin AW Co., Ltd., Anjo, JP;
Abstract
A power transmission device includes a clutch that transmits power from a motor to an axle; a first pump that is driven by power from the motor to generate and output fluid pressure; a second pump that receives and is driven by a supply of electric power to generate and output fluid pressure; a pressure regulating valve that functions as a linear solenoid valve and is formed with an input port, an output port that is connected to the clutch, and a drain port; and a switching valve that switches between a first connection state.