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:
Feb. 01, 2022
Filed:
May. 05, 2020
Applicant:
Tdk Corporation, Tokyo, JP;
Inventors:
Assignee:
TDK Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/27 (2006.01); H02K 15/03 (2006.01); H01F 13/00 (2006.01); H01F 1/22 (2006.01); H02K 21/14 (2006.01);
U.S. Cl.
CPC ...
H02K 1/276 (2013.01); H01F 1/22 (2013.01); H01F 13/003 (2013.01); H02K 15/03 (2013.01); H02K 21/14 (2013.01);
Abstract
In an IPM motor, since a first portion which is a pressed powder compact made of soft magnetic powder and has a lower magnetic permeability and a lower saturation magnetic flux density than those of a main body portion made of a laminated steel sheet is replaced and disposed in the vicinity of an inner arc side portion of a right end portion of a permanent magnet, local demagnetization is prevented.