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:
Jan. 20, 2015
Filed:
Jul. 06, 2012
Applicants:
Rui Feng Qin, Hong Kong, CN;
Fei Liu, Shenzhen, CN;
Ji Yu Liang, Shenzhen, CN;
Inventors:
Assignee:
Johnson Electric S.A., Murten, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 3/16 (2006.01); H02K 23/38 (2006.01); H02K 23/30 (2006.01);
U.S. Cl.
CPC ...
H02K 23/38 (2013.01); H02K 23/30 (2013.01);
Abstract
An electric motor includes a stator, a rotor, and multiple brushes. The stator forms multiple poles. The number of brushes is less than the number of stator poles. The rotor includes a commutator, windings, and equalizing units. The commutator includes segments electrically connected with the windings. Each of the equalizing units is electrically connected with multiple equipotential segments to make the equipotential segments have the same potential. Multiple parallel circuits are formed between the equipotential segments by the equalizing unit. The brushes are arranged to slidably contact the segments of the commutator.