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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.:

US 9531222 B1

PDFFull Text
Expired
Date of Patent:
Dec. 27, 2016

Filed:

Sep. 14, 2012

Stator core having convex protruding portion coinciding with adjacent coils

Applicants:

Yoshihiro Uchitani, Kyoto, JP;

Yuji Tanaka, Kyoto, JP;

Tomoyoshi Yokogawa, Kyoto, JP;

Inventors:

Yoshihiro Uchitani, Kyoto, JP;

Yuji Tanaka, Kyoto, JP;

Tomoyoshi Yokogawa, Kyoto, JP;

Assignee:

NIDEC CORPORATION, Kyoto, JP;

Attorney:

Keating & Bennett, LLP

Primary Examiner:

Naishadh Desai

Int. Cl.
CPC ...
H02K 1/16 (2006.01); H02K 1/14 (2006.01); H02K 15/02 (2006.01); H02K 3/12 (2006.01); H02K 3/34 (2006.01); H02K 15/10 (2006.01);
U.S. Cl.
CPC ...
H02K 1/165 (2013.01); H02K 1/148 (2013.01); H02K 3/12 (2013.01); H02K 3/345 (2013.01); H02K 15/022 (2013.01); H02K 15/105 (2013.01); Y10T 29/49012 (2015.01);
Abstract

A stationary portion of a motor includes a stator core, insulators, and coils. The stator core includes a core back having an annular shape, and a plurality of teeth extending radially inward from the core back. A radially inner end portion of each tooth has a circumferential width substantially equal to or smaller than a circumferential width of a remaining portion of the tooth. The core back includes a protruding portion protruding radially inward between adjacent teeth, a cut extending radially outward from the protruding portion, and a through hole extending in an axial direction through the core back defined at a radially outer end portion of the cut. The protruding portion increases a radial dimension of the core back to achieve a reduction in magnetic reluctance in the vicinity of the cut.

Find Patent Forward Citations

Uchitani, Yoshihiro. (2016). Stator core having convex protruding portion coinciding with adjacent coils (U.S. Patent No. 9531222). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9531222

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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