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:
Dec. 01, 2020
Filed:
Mar. 22, 2019
Applicant:
Denso Corporation, Kariya, JP;
Inventors:
Takashi Hirabayashi, Kariya, JP;
Taro Fukuda, Kariya, JP;
Assignee:
DENSO CORPORATION, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01R 39/04 (2006.01); H02K 13/10 (2006.01); H01R 39/02 (2006.01); H01R 39/22 (2006.01); F02N 11/00 (2006.01); C22C 9/00 (2006.01);
U.S. Cl.
CPC ...
H02K 13/105 (2013.01); F02N 11/00 (2013.01); H01R 39/025 (2013.01); H01R 39/04 (2013.01); H01R 39/22 (2013.01); C22C 9/00 (2013.01);
Abstract
A starter includes a motor configured with a direct current motor. The direct current motor has a brush and a commutator. The brush is a sintered material formed of graphite and a copper powder. The commutator is formed of either copper or a copper alloy that has a copper content of 99% or more. A surface of is a sliding portion of the commutator which has sliding movement with the brush is provided with a graphite cover-layer that contains graphite as a main component. The graphite cover-layer contains a hard compound which has a Vickers hardness higher than 10 GPa and a metal sulfide solid lubricant.