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:
Feb. 18, 2014
Filed:
Oct. 22, 2010
Tetsuya Shimizu, Anjo, JP;
Tomomi Ishikawa, Okazaki, JP;
Kazunori Ishikawa, Toyota, JP;
Aisin Aw Co., Ltd., Anjo, JP;
Abstract
A power transmission apparatus mounted on a vehicle is provided with a motor that transmits power from the motor to an axle through a friction engagement element. The power transmission apparatus is further configured with a mechanical pump that pressure-feeds a fluid to a fluid pressure servo for the friction engagement element, and an electric pump that pressure-feeds the fluid to the fluid pressure servo of the friction engagement element. Furthermore, a lubrication supply passage is configured to connect to a flow passage extending from the electric pump to the fluid pressure servo. A first valve switches between opening and closing the lubrication supply passage such that, during a stop of the motor, so as to supply the fluid to the fluid pressure servo when in a driving position, and to the component to be lubricated when shifted to a neutral position.