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. 14, 2018
Filed:
Jan. 29, 2016
Applicant:
Johnson Electric S.a., Murten, CH;
Inventors:
Michael Watzek, Courgevaux, CH;
Yuan Chun Zhang, Shenzhen, CN;
Jin An Nie, Shenzhen, CN;
Fa Yun Qi, Shenzhen, CN;
Ya Jie Chen, Shenzhen, CN;
Rui Feng Qin, Hong Kong, CN;
Michael Kaeser, Dudingen, CH;
Assignee:
Johnson Electric S.A., Murten, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B60L 7/00 (2006.01); F16D 65/18 (2006.01); F16D 65/50 (2006.01); F16D 121/24 (2012.01); F16D 125/48 (2012.01); F16D 127/06 (2012.01);
U.S. Cl.
CPC ...
F16D 65/18 (2013.01); F16D 65/50 (2013.01); F16D 2121/24 (2013.01); F16D 2125/48 (2013.01); F16D 2127/06 (2013.01);
Abstract
An actuator for an electric parking brake system includes a motor, an output member, and a speed reduction device. The speed reduction device includes a transmission mechanism and a self-locking mechanism. The self-locking mechanism includes a fixed member, first and second rotating bodies, and a spring. The second rotating body transmits torque to the output member via a planetary gear mechanism. The spring prevents the brake from driving the motor.