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. 05, 2011
Filed:
Jan. 10, 2006
Yasuji Taketsuna, Okazaki, JP;
Yasuji Taketsuna, Okazaki, JP;
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Abstract
A rotating electric machine, comprising a stator, a rotor, a case storing the stator and the rotor, and an oil pump. Oil discharge ports are formed at the terminal part of an oil discharge passage of the case, and a cooling oil is supplied to the upper cutout parts of the stator. A groove part is covered by a cover to form a closed flow passage. Since the cooling oil is sufficiently applied to the portion of a coil exposed to the inside of the flow passage, a cooling efficiency is increased. Also the cooling oil is guided to an orifice on the lower side in the gravitational direction. Accordingly, since the cooling oil does not flow in an air gap between the rotor and the stator, a power loss can be prevented from occurring.