Patents by Inventor Shanchao Xu

Shanchao Xu 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).

  • Railway freight car bogie
    Patent number: 10710613
    Abstract: A railway freight car bogie includes a side frame, a bolster and a friction damper. The friction damper includes a wedge, a constant friction damping spring, a variable friction damping spring and an ejector rod. The variable friction damping spring in the middle and below the wedge is deviated at a distance in a direction away from a center of the bolster with respect to damping springs at two sides of the variable friction damping spring. An axis of each of the constant friction damping spring and the ejector rod is coincident with an axis of the variable friction damping spring in the middle and below the wedge. The bogie not only has an ideal relative friction coefficient in both an unloaded condition and a loaded condition, a large diamond resistant rigidity, a better vertical dynamics performance and a better transverse dynamics performance.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: July 14, 2020
    Assignee: CRRC QIQIHAR ROLLING STOCK CO., LTD.
    Inventors: Zhenming Liu, Shifeng Xu, Xinqiang Liu, Shanchao Xu, Weigang Kong
  • RAILWAY FREIGHT CAR BOGIE
    Publication number: 20190023289
    Abstract: A railway freight car bogie includes a side frame, a bolster and a friction damper. The friction damper includes a wedge, a constant friction damping spring, a variable friction damping spring and an ejector rod. The variable friction damping spring in the middle and below the wedge is deviated at a distance in a direction away from a center of the bolster with respect to damping springs at two sides of the variable friction damping spring. An axis of each of the constant friction damping spring and the ejector rod is coincident with an axis of the variable friction damping spring in the middle and below the wedge. The bogie not only has an ideal relative friction coefficient in both an unloaded condition and a loaded condition, a large diamond resistant rigidity, a better vertical dynamics performance and a better transverse dynamics performance.
    Type: Application
    Filed: December 7, 2017
    Publication date: January 24, 2019
    Applicant: CRRC QIQIHAR ROLLING STOCK CO., LTD.
    Inventors: Zhenming Liu, Shifeng Xu, Xinqiang Liu, Shanchao Xu, Weigang Kong