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. 22, 2015
Filed:
Jul. 02, 2012
Bao Ting Liu, Shenzhen, CN;
LI Sheng Liu, Shenzhen, CN;
Yue LI, Hong Kong, CN;
Hong Jian Zhang, Shenzhen, CN;
Bao Ting Liu, Shenzhen, CN;
Li Sheng Liu, Shenzhen, CN;
Yue Li, Hong Kong, CN;
Hong Jian Zhang, Shenzhen, CN;
Johnson Electric S.A., Murten, CH;
Abstract
A brush direct current motor has a first connecting portion and a second connecting portion for respectively connecting the positive and negative electrode of a direct current power source, a stator having a number of coils corresponding to N phases, a rotor, a current converting device and a spark suppression circuit. The spark suppression circuit has N branches. Each branch comprises a first diode and a second diode, the cathode of the first diode and the anode of the second diode are respectively connected to the first connecting portion and the second connecting portion, the anode of the first diode and the cathode of the second diode are connected to a corresponding phase.