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:
Feb. 11, 2020
Filed:
Nov. 21, 2017
Johnson Electric S.a., Murten, CH;
Jingxin Shi, Shenzhen, CN;
Sijun Zhao, Shenzhen, CN;
Luyan Bi, Shenzhen, CN;
Pingman Zhang, Shenzhen, CN;
Lang Dai, Shenzhen, CN;
Yunchang Yu, Shenzhen, CN;
Guiqing Liao, Shenzhen, CN;
Xionghui Liu, Shenzhen, CN;
Zhiyu Chen, Shenzhen, CN;
Cong Lv, Shenzhen, CN;
He Chi, Shenzhen, CN;
JOHNSON ELECTRIC INTERNATIONAL AG, Murten, CH;
Abstract
A brush used to contact with a commutator, includes a brush body which includes two opposite axial end faces and a protruding portion projecting from the brush body toward the commutator. The protruding portion includes a first surface, a second surface and at least two teeth. The first surface and the second surface are respectively adjacent to the two axial end faces. Angles formed between the first surface and the second surface and corresponding adjacent axial end faces are obtuse. The teeth is located between the first surface and the second surface, and extends generally along a circumferential direction of the commutator. The ratio of a total width of the at least two teeth in an axial direction of the brush to an axial height of the brush body is in the range of 0.25-0.75. An electric motor including the brush is also provided.