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:
Nov. 13, 2018
Filed:
Nov. 09, 2015
Applicant:
Fanuc Corporation, Yamanashi, JP;
Inventors:
Yohei Arimatsu, Yamanashi, JP;
Kenji Kawai, Yamanashi, JP;
Assignee:
FANUC CORPORATION, Yamanashi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 1/27 (2006.01); H02K 15/03 (2006.01); H02K 1/30 (2006.01);
U.S. Cl.
CPC ...
H02K 15/03 (2013.01); H02K 1/278 (2013.01); H02K 1/30 (2013.01);
Abstract
A rotor member includes a cylindrical sleeve part having a circular outer peripheral surface, a plurality of magnets arranged along the outer peripheral surface and including an inner peripheral surface having a curvature radius larger than a curvature radius of the outer peripheral surface, and a cylindrical holding member surrounding the plurality of magnets. Between the outer peripheral surface of the sleeve part and the inner peripheral surface of the magnets, a gap of a radial direction increased toward a circumferential edge portion of the magnets is formed.