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:
Jan. 19, 2010
Filed:
Aug. 07, 2007
Hiroshi Kanazawa, Hitachiohta, JP;
Takayuki Koyama, Hitachi, JP;
Masashi Kitamura, Mito, JP;
Susumu Tajima, Hitachinaka, JP;
Kenya Takarai, Atsugi, JP;
Hiroshi Kanazawa, Hitachiohta, JP;
Takayuki Koyama, Hitachi, JP;
Masashi Kitamura, Mito, JP;
Susumu Tajima, Hitachinaka, JP;
Kenya Takarai, Atsugi, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
It is made easy for a stator winding to be wound around a stator core and degradation in efficiency is prevented as much as possible. A stator () includes a plurality of phases, i.e., of circumferentially divided stator magnetic poles (). The stator magnetic poles () are each composed of an arcuate stator core () having a plurality of axially extending claw poles () and a circumferentially elliptically wound stator winding (). The stator magnetic poles () are magnetically divided; therefore, magnetic flux leakage is reduced to improve efficiency. Air flowing between the stator magnetic poles () can improve a cooling effect.