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. 15, 2010
Filed:
Aug. 19, 2008
Shigeki Tounosu, Hitachi, JP;
Kengo Iwashige, Hitachi, JP;
Ryuichiro Iwano, Hitachi, JP;
Mitsuru Saeki, Hitachinaka, JP;
Kenichi Hattori, Hitachiota, JP;
Kazuhiko Takahashi, Hitachi, JP;
Shigeki Tounosu, Hitachi, JP;
Kengo Iwashige, Hitachi, JP;
Ryuichiro Iwano, Hitachi, JP;
Mitsuru Saeki, Hitachinaka, JP;
Kenichi Hattori, Hitachiota, JP;
Kazuhiko Takahashi, Hitachi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A rotating electric machine wherein sub slots serving as cooling fluid ducts in the axial direction are provided at the bottoms of the coil slots formed in the rotor, radial cooling fluid ducts are formed through the field coil of the rotor in the radial direction of the rotor and juxtaposed in the axial direction of the rotor, so as to communicate the sub slots with the air gap, and radial cooling fluid ducts are formed through the stator in the radial direction of the stator and juxtaposed in the axial direction of the rotor, corresponding in position to the radial cooling fluid ducts in the rotor, so as to communicate the inner periphery of the stator with the outer periphery of the stator.