Patents by Inventor Changling Hu

Changling Hu 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).

  • Pouring metallic plug stick clamping mechanism for cast steel wheels
    Patent number: 10252330
    Abstract: A pouring metallic plug stick clamping mechanism for cast steel wheels. The mechanism includes: a cast iron frame, a plurality of grooves, a centrally located opening in the frame, a first white ceramic ball, a second white ceramic ball, a third white ceramic ball, a retaining spring, a pressure regulating bolt, a control press button, a metallic plug stick, and a blocking iron piece.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: April 9, 2019
    Assignee: Amsted Rail Company, Inc.
    Inventors: Sijin Zhang, Xuefeng Yu, James Harold Strickland, Chengqun Yan, Zhongxian Du, Changling Hu
  • POURING METALLIC PLUG STICK CLAMPING MECHANISM FOR CAST STEEL WHEELS
    Publication number: 20170203360
    Abstract: A pouring metallic plug stick clamping mechanism for cast steel wheels. The mechanism includes: a cast iron frame, a movable adjusting groove, an internal fixing shaft, a first white ceramic ball, a second white ceramic ball, a third white ceramic ball, a retaining spring, a pressure regulating bolt, a control press button, a sector shaped panel, a metallic plug stick, and a blocking iron piece.
    Type: Application
    Filed: January 16, 2017
    Publication date: July 20, 2017
    Inventors: Sijin Zhang, Xuefeng Yu, James Harold Strickland, Chengqun Yan, Zhongxian Du, Changling Hu