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:
Apr. 09, 2013
Filed:
Dec. 28, 2009
Tetsuya Shimizu, Anjo, JP;
Kazuhiko Kato, Kariya, JP;
Naoyuki Fukaya, Okazaki, JP;
Kazunori Ishikawa, Toyota, JP;
Tetsuya Shimizu, Anjo, JP;
Kazuhiko Kato, Kariya, JP;
Naoyuki Fukaya, Okazaki, JP;
Kazunori Ishikawa, Toyota, JP;
Aisin AW Co., Ltd., Anjo, JP;
Abstract
A power transmission device that 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 line pressure generating valve that is operated by operation fluid input to an operation input port, and regulates fluid pressure output from the first pump to generate a line pressure for engaging the clutch; and a switching valve that switches between a first connection state and a second connection state.