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:
Aug. 30, 2005
Filed:
Apr. 09, 2004
Kazumasa Ide, Hitachiohta, JP;
Kenichi Hattori, Hitachi, JP;
Akiyoshi Komura, Hitachi, JP;
Yoko Yamashina, Hitachi, JP;
Tadashi Sonobe, Iwaki, JP;
Akitomi Semba, Hitachi, JP;
Junji Sato, Hitachi, JP;
Ryoichi Shiobara, Hitachi, JP;
Kazumasa Ide, Hitachiohta, JP;
Kenichi Hattori, Hitachi, JP;
Akiyoshi Komura, Hitachi, JP;
Yoko Yamashina, Hitachi, JP;
Tadashi Sonobe, Iwaki, JP;
Akitomi Semba, Hitachi, JP;
Junji Sato, Hitachi, JP;
Ryoichi Shiobara, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A rotating electric machine having a plurality of ventilating passages formed between a stator frame and a stator iron core and coolers which cool a coolant being provided in the plurality of the ventilating passages. A ventilating circuit in which at least a portion of the coolant which is cooled by one of the coolers is further cooled by another of the coolers, and is allowed to flow to a central portion in an axial direction of the stator iron core in a direction from an outer peripheral side to an inner peripheral side of the stator iron core at least via one ventilating passage of the plurality of ventilating passage which communicates with the central portion in the axial direction of the stator iron core.