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:
Mar. 21, 2023
Filed:
May. 14, 2020
Tdk Corporation, Tokyo, JP;
Nobuyuki Shimbo, Tokyo, JP;
Koji Mitake, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
A motor deviceincludes an SPM motorthat includes a statorincluding an iron coreand a plurality of windingswound on the iron core, and a rotorwhich is rotatable with respect to a rotation axis and in which a plurality of permanent magnetsare mounted along a circumferential direction to form a plurality of magnetic poles in the circumferential direction; and a power supply unitthat supplies a current to the plurality of windingsof the SPM motor. Each of the plurality of magnetic poles is oriented such that directions of axes of easy magnetization are concentrated toward a stator side, and the current supplied from the power supply unit is a trapezoidal wave.