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:
Aug. 09, 2022
Filed:
Dec. 10, 2019
Tdk Corporation, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
It can be considered that a cross-sectional shape of a permanent magnet having a parallel reference surface is obtained by removing a portion from a cross-sectional shape of a permanent magnet which does not have the parallel reference. A cross-sectional area of the permanent magnet is further reduced than that of the permanent magnet which does not have the parallel reference surface. In addition, also a magnet volume of the permanent magnet is further reduced than that of the permanent magnet that does not have the parallel reference surface. The inventors have confirmed that a decrease in magnet volume induced by the parallel reference surface does not affect the characteristics of an IPM motor.