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. 03, 2025
Filed:
Apr. 05, 2023
Applicant:
Okuma Corporation, Aichi, JP;
Inventor:
Motozumi Yura, Aichi, JP;
Assignee:
OKUMA CORPORATION, Aichi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 17/14 (2006.01); H02K 3/12 (2006.01); H02P 25/20 (2006.01);
U.S. Cl.
CPC ...
H02K 17/14 (2013.01); H02K 3/12 (2013.01); H02K 2213/03 (2013.01);
Abstract
In a three-phase induction motor, each of coils of three phases has a first coil unit and a second coil unit placed in 180-degree symmetry, each of the coil units has a first coil and a second coil, the first coil is formed by winding a winding once in an electrical angle range of 180 degrees during a two-pole operation, the second coil is formed by winding the winding twice in a range of a center third when the first coil is equally divided into three parts in a circumferential direction, in such a manner that a current flows in a direction opposite to a direction of current flowing in the first coil.