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:
Jun. 30, 2020
Filed:
Sep. 13, 2017
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K 1/17 (2006.01); H02K 23/04 (2006.01); H02K 1/02 (2006.01); H02K 1/18 (2006.01);
U.S. Cl.
CPC ...
H02K 1/17 (2013.01); H02K 1/02 (2013.01); H02K 1/185 (2013.01); H02K 23/04 (2013.01);
Abstract
A sintered magnet has an arc shape cross-section defined by an outer arc, an inner arc, and a pair of end sides connecting an end point of the outer arc and an end point of the inner arc, and a range of an central angle α of the inner arc is 145°≤α≤180°. The inventors have newly found that a large magnetic flux can be obtained according to the sintered magnet and the characteristics of the motor can be improved, using such a sintered magnet.