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:
Aug. 25, 2015
Filed:
May. 25, 2012
Applicants:
Xue Ming He, Shenzhen, CN;
Hai Yang Wang, Shenzhen, CN;
Qiang Zhou, Shenzhen, CN;
Inventors:
Assignee:
Johnson Electric S.A., Murten, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K 23/04 (2006.01); H02K 1/17 (2006.01); H02K 23/00 (2006.01); H02K 5/04 (2006.01); H02K 23/40 (2006.01);
U.S. Cl.
CPC ...
H02K 23/00 (2013.01); H02K 5/04 (2013.01); H02K 23/405 (2013.01); H02K 2213/03 (2013.01);
Abstract
A permanent magnet motor has a rotor and a stator. The rotor has a shaft, a rotor core fixed to the shaft, a commutator fixed to the shaft adjacent to the rotor core, and rotor windings wound about poles of the rotor core and electrically connected to the commutator. The stator includes a magnetically conductive round housing, permanent magnets fixed to an inner surface of the housing, and brushes for making sliding contact with the commutator. The ratio of an outer diameter of the rotor core to an outer diameter of the housing is between 66% to 84%.