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:
Oct. 08, 2019
Filed:
Feb. 10, 2014
Applicant:
Mitsubishi Electric Corporation, Tokyo, JP;
Inventors:
Toyoaki Udo, Tokyo, JP;
Satoru Akutsu, Tokyo, JP;
Shusuke Hori, Tokyo, JP;
Takanori Ichikawa, Tokyo, JP;
Yuji Takizawa, Tokyo, JP;
Assignee:
Mitsubishi Electric Corporation, Tokyo, JP;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/28 (2006.01); H02K 1/27 (2006.01);
U.S. Cl.
CPC ...
H02K 1/28 (2013.01); H02K 1/278 (2013.01); H02K 2201/06 (2013.01); H02K 2213/03 (2013.01);
Abstract
A rotor core of a rotor includes: a plurality of protrusions formed on at least a step-skew boundary side; and a tubular non-magnetic ring mounted on outer peripheries of a plurality of permanent magnets so as to cover the boundary. The non-magnetic ring includes a plurality of inner diameter bulging portions. Each of the permanent magnets and each of the protrusions are brought into abutment against the corresponding inner diameter bulging portions.