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:
Jul. 14, 2009
Filed:
Mar. 24, 2006
Toshihito Miyashita, Nagano, JP;
Satoru Onodera, Nagano, JP;
Kazuyuki Kitazawa, Nagano, JP;
Masahiro Koyama, Nagano, JP;
Kazuhiko Takizawa, Nagano, JP;
Toshihito Miyashita, Nagano, JP;
Satoru Onodera, Nagano, JP;
Kazuyuki Kitazawa, Nagano, JP;
Masahiro Koyama, Nagano, JP;
Kazuhiko Takizawa, Nagano, JP;
Sanyo Denki Co., Ltd., Tokyo, JP;
Abstract
A permanent magnet rotary motor is provided in which cogging torque can be reduced and an increase in copper loss can also be prevented. A first divided core unitis combined with a second divided core unit, thereby constituting a stator core. The first divided core unitconstitutes a yoke portion. The second divided core unitincludes pole pieces, magnetic pole surface constituent portions, and first and second type connecting portionsA andB each mutually couple two adjacent magnetic pole surface constituent portionsall of which are formed integral with one another. The thickness of the first type connecting portionsA in a radial direction of the stator coreis set to be smaller than the thickness of the second type connecting portionsB in the radial direction of the stator core