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. 20, 2010
Filed:
Dec. 05, 2007
Toshio Ishikawa, Hitachinaka, JP;
Minoru Yabuki, Tokai, JP;
Hiroshi Kanazawa, Hitachiota, JP;
Yuji Enomoto, Hitachi, JP;
Yoshihisa Ishikawa, Hitachinaka, JP;
Toshio Ishikawa, Hitachinaka, JP;
Minoru Yabuki, Tokai, JP;
Hiroshi Kanazawa, Hitachiota, JP;
Yuji Enomoto, Hitachi, JP;
Yoshihisa Ishikawa, Hitachinaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
It is an object of the present invention to make it possible to easily wind a stator winding, enhance an occupied ratio in a stator core, reduce a winding resistance because there is no coil end, and change a field magnetic flux in accordance with a use. Stator pawl magnetic poles of a stator core extend from both sides in an axial direction alternately at locations opposed to a rotor to form a plurality of magnetic poles. With this stator core, it is only necessary to annularly wind a stator winding. Therefore, it is possible to enhance operability and an occupied ratio, and since there is no coil end, it is possible to reduce winding resistance. Since the rotor is a Randall type rotor having a field winding and a rotor pawl magnetic pole, it is possible to change the field magnetic flux in accordance with a use.