Patents by Inventor Tianhe MA

Tianhe MA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • MECHANICAL MOTOR-DRIVEN FRICTION BRAKE DEVICE FOR RAIL VEHICLE
    Publication number: 20200198671
    Abstract: A mechanical motor-driven friction brake device for a rail vehicle consists of a torque motor, an electromagnetic brake (5), a screw nut transmission mechanism, and a brake friction pair (6), the torque motor and a screw (4) being coaxially mounted, the screw (4) being in non-self-locking threaded connection with a nut (3), and one end of the nut (3) being connected to the brake friction pair (6); the device drives, by means of the torque motor, the screw (4) to rotate so as to drive the nut (3) to perform linear motion and outputs a pressure or a pulling force to the brake friction pair (6), so as to brake or release the rail vehicle; in addition, this device can lock the screw by means of the electromagnetic brake (5), realizing the function of parking brake.
    Type: Application
    Filed: September 6, 2017
    Publication date: June 25, 2020
    Inventors: Mengling WU, Maolin CHEN, Chun TIAN, Shun PENG, FuLei FENG, Chi LEI, Tianhe MA