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:
Nov. 24, 2020
Filed:
Mar. 27, 2018
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Hidetake Kitaoka, Tokyo, JP;
Makoto Iwasaki, Tokyo, JP;
Tetsuya Hidaka, Tokyo, JP;
Eiji Kato, Tokyo, JP;
Takuma Hayakawa, Tokyo, JP;
Assignee:
TDK CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/27 (2006.01); H02K 1/02 (2006.01); H02K 9/19 (2006.01); H02K 7/00 (2006.01);
U.S. Cl.
CPC ...
H02K 1/2706 (2013.01); H02K 1/02 (2013.01); H02K 1/276 (2013.01); H02K 9/19 (2013.01); H02K 7/003 (2013.01);
Abstract
Provided is a motor including a permanent magnet, in which the permanent magnet includes a high temperature side permanent magnet part exposed to a high temperature inside the motor, and a low temperature side permanent magnet part exposed to a temperature lower than the high temperature inside the motor, and a coercive force of the high temperature side permanent magnet part is higher than the coercive force of the low temperature side permanent magnet part.