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. 13, 2018
Filed:
Dec. 11, 2014
Applicant:
Nidec Corporation, Kyoto, JP;
Inventors:
Tomoyoshi Sawada, Kyoto, JP;
Yuya Oura, Kyoto, JP;
Assignee:
NIDEC CORPORATION, Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 15/16 (2006.01); H02K 7/04 (2006.01); H02K 5/16 (2006.01); H02K 29/08 (2006.01); H02K 3/52 (2006.01);
U.S. Cl.
CPC ...
H02K 7/04 (2013.01); H02K 3/522 (2013.01); H02K 5/161 (2013.01); H02K 29/08 (2013.01);
Abstract
A rotor portion includes an upper cylindrical portion and a lower cylindrical portion, each of which is configured to rotate together with a rotor. A stator portion includes a circuit board including a rotation detection portion located thereon. The lower cylindrical portion includes a lower balance correction portion. The upper cylindrical portion includes an upper balance correction portion. In addition, a detectable portion configured to be detected by the rotation detection portion is provided on the upper cylindrical portion.