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. 08, 2021
Filed:
May. 23, 2019
Mando Corporation, Gyeonggi-do, KR;
Mohammad Islam, Saginaw, MI (US);
Mazharul Chowdhury, Midland, MI (US);
Tae Sik Kim, Midland, MI (US);
MANDO CORPORATION, Gyeonggi-do, KR;
Abstract
A permanent magnet motor (and associated rotor and stator) are described. The motor includes: a rotor having: an outer surface disposed radially from a central axis; and a plurality of permanent magnets located on the outer surface of or within pockets located between the outer surface and the central axis of the rotor; a stator having an inner surface in a spaced apart relationship to the outer surface or the plurality of permanent magnets with a gap there between that varies as a function of axial position along the central axis, and a first gap width at a first axial position is different from a second gap width at a second axial position, and the first and second gap widths are sized and configured to reduce the coping torque of the IPM motor as compared to an IPM motor having a constant gap width of the first or second width.