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:
Jun. 04, 2013
Filed:
Mar. 31, 2010
Koji Hayashi, Aichi-gun, JP;
Makoto Tomita, Nagoya, JP;
Shinichi Kojima, Toyota, JP;
Ryuichi Hasegawa, Toyota, JP;
Takahiro Miki, Toyota, JP;
Koji Hayashi, Aichi-gun, JP;
Makoto Tomita, Nagoya, JP;
Shinichi Kojima, Toyota, JP;
Ryuichi Hasegawa, Toyota, JP;
Takahiro Miki, Toyota, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A heat-generating portion cooling structure of vehicle drive apparatus that sufficiently supplies cooling oil to heat-generating portions to enhance efficiency of the vehicle drive apparatus when the heat-generating portions generate maximum heat includes drawing means for drawing oil in a case into a catch tank, and an oil circulation passage for circulating the oil through the catch tank while supplying the oil to first and second heat-generating portions. The oil circulation passage includes a first passage for the oil to flow to the first heat-generating portion when the oil surface in the catch tank is at a first height and a second passage for the oil to flow to the second heat-generating portion when the oil surface is at a second height lower than the first height, and more amount of oil flows to the second heat-generating portion than to the first heat-generating portion when the oil surface is low.