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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 11277057 B1

PDFFull Text
Date of Patent:
Mar. 15, 2022

Filed:

Jul. 18, 2018

Sensor magnet of motor having a fixing portion to press-fit to a shaft without a sensor magnet holder

Applicant:

Mabuchi Motor Co., Ltd., Matsudo, JP;

Inventors:

Kazuyuki Yamamoto, Chiba, JP;

Satoshi Kikuchi, Chiba, JP;

Assignee:

MABUCHI MOTOR CO., LTD., Matsudo, JP;

Attorney:

Myers Wolin, LLC.

Primary Examiner:

Tulsidas C Patel

Assistant Examiner:

Rashad H Johnson

Int. Cl.
CPC ...
H02K 11/215 (2016.01); G01D 5/14 (2006.01); G01D 5/244 (2006.01); H02K 7/116 (2006.01); H02K 11/21 (2016.01); H02K 11/00 (2016.01); H02K 11/24 (2016.01);
U.S. Cl.
CPC ...
H02K 11/215 (2016.01); G01D 5/145 (2013.01); G01D 5/244 (2013.01); H02K 7/1166 (2013.01); H02K 11/00 (2013.01); H02K 11/21 (2016.01); H02K 11/24 (2016.01);
Abstract

An annular sensor magnet to be fixed to a motor shaft by a press-fit includes an annular portion having magnetic poles alternately formed in an outer peripheral portion. The annular sensor magnet also includes a fixing portion extending from an inner peripheral portion of the annular portion toward a center to support and fix the motor shaft having been press-fit, and a stress reducing portion for reducing stress caused in a contact portion of the fixing portion that contacts the motor shaft when the motor shaft is press-fit onto the fixing portion. The sensor magnet includes a bonded magnet in which a magnetic material is dispersed in a plastic material.

Find Patent Forward Citations

Yamamoto, Kazuyuki. (2022). Sensor magnet of motor having a fixing portion to press-fit to a shaft without a sensor magnet holder (U.S. Patent No. 11277057). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11277057

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

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