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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 11303082 B1

PDFFull Text
Date of Patent:
Apr. 12, 2022

Filed:

Mar. 31, 2020

Dc motor

Applicant:

Denso Corporation, Kariya, JP;

Inventor:

Takashi Hirabayashi, Kariya, JP;

Assignee:

DENSO CORPORATION, Kariya, JP;

Attorney:

Oliff PLC

Primary Examiner:

Dang D Le

Int. Cl.
CPC ...
H01R 39/04 (2006.01); H01R 39/02 (2006.01); H01R 39/22 (2006.01); C22C 32/00 (2006.01); H02K 13/10 (2006.01); C04B 35/52 (2006.01); H01R 39/26 (2006.01);
U.S. Cl.
CPC ...
H01R 39/025 (2013.01); C04B 35/522 (2013.01); C22C 32/0047 (2013.01); H01R 39/04 (2013.01); H01R 39/22 (2013.01); H01R 39/26 (2013.01); H02K 13/105 (2013.01);
Abstract

A DC motor is provided that can suppress a commutator from wearing. A DC motor including a commutator formed of copper or a copper alloy of 99% or more copper, and a brush pressed against and in contact with the commutator, wherein the brush is composed of a sintered compact including graphite and copper powder, hard compound particles higher in hardness than any of the copper or the copper alloy and the graphite or the copper powder are contained in at least one of the commutator and the brush and are scattered on or near a contact surface of the commutator with the brush at least during use.

Find Patent Forward Citations

Hirabayashi, Takashi. (2022). Dc motor (U.S. Patent No. 11303082). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11303082

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

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