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:
Sep. 04, 2018
Filed:
Jun. 09, 2015
Johnson Electric S.a., Murten, CH;
Qing Bin Luo, Shenzhen, CN;
James Ching Sik Lau, Hong Kong, CN;
Wen Ming Wu, Shenzhen, CN;
Gui Hong Tian, Shenzhen, CN;
Xin Peng Wei, Shenzhen, CN;
Wing Cheung Lam, Hong Kong, CN;
Qiang Xu, Shenzhen, CN;
Zhong Hai Chen, Shenzhen, CN;
JOHNSON ELECTRIC S.A, Murten, CH;
Abstract
An electric motor includes a stator and a rotor. The stator includes a motor housing with an open end and an end cover mounted to the open end. The rotor includes a rotor shaft that extends through the end cover. The end cover includes a bearing that supports the rotor shaft. The rotor shaft and motor housing are made of an electrically conductive material and are electrically connected with each other. The motor housing, end cover, bearing and rotor shaft cooperatively form an electromagnetic shield suppressing electromagnetic interference generated by the motor. Optionally, the rotor shaft drives a coaxial worm shaft of a gearbox by an insulating member, which further suppresses electromagnetic interference.