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:
May. 10, 2016
Filed:
Jun. 27, 2011
Junnosuke Nakatsugawa, Tokyo, JP;
Yuji Enomoto, Tokyo, JP;
Norihisa Iwasaki, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention relates to a magnetic gear type electric rotating machine. Specifically, the purpose is to provide a magnetic gear type electric rotating machine with which the intensity of a permanent magnetic field can be improved without increasing material and manufacturing costs, and deterioration of torque transmission characteristics can be prevented. To this end, in the present invention, concave and convex sections are provided on a surface of at least one of cores () for a first permanent magnetic field () and a second permanent magnetic field (). The convex sections () are arranged along the circumferential direction at the center sections of permanent magnetic poles (), and the concave sections () are arranged along the circumferential direction at the edge sections of the permanent magnetic poles ().