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. 20, 2017
Filed:
Apr. 22, 2015
Applicant:
Nsk Ltd., Tokyo, JP;
Inventors:
Assignee:
NSK LTD., Shinagawa-ku, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 11/00 (2016.01); H02K 7/14 (2006.01); H02K 24/00 (2006.01); H02K 5/16 (2006.01); H02K 11/21 (2016.01); H02K 7/08 (2006.01);
U.S. Cl.
CPC ...
H02K 7/14 (2013.01); H02K 5/16 (2013.01); H02K 7/08 (2013.01); H02K 11/21 (2016.01); H02K 24/00 (2013.01);
Abstract
A direct drive motor includes: a motor unit including a stator and a rotor rotatable with respect to the stator; a housing including a first housing to which the stator is fixed and a second housing to which the rotor is fixed; a bearing that rotatably supports the second housing with respect to the first housing; and a rotation detector that detects a rotating state of the motor unit. The rotation detector is a single incremental-type resolver that detects a relative displacement of the rotor with respect to the stator.