Patents by Inventor Guo Qiang George Hu

Guo Qiang George 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).

  • Power tong for turning pipe
    Patent number: 9366097
    Abstract: A power tong having a self-contained hydraulic power system within its rotating body converts mechanical energy from at least one mechanical link to hydraulic energy within the self-contained hydraulic power system. Energy applied from the non-rotating portion of the power tong is transferred to the mechanical link that links the fixed portion with the rotating portion of the power tong thus removing the need for rotary seals. The mechanical energy transferred to the self-contained hydraulic power system within the rotating body is used to extend and retract one or more grippers in contact with, for example, a tubular of well equipment drill strings.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: June 14, 2016
    Assignee: HONGHUA AMERICA, LLC
    Inventors: Guo Qiang George Hu, Milan Cerovsek, Richie Paez
  • POWER TONG FOR TURNING PIPE
    Publication number: 20150143960
    Abstract: A power tong having a self-contained hydraulic power system within its rotating body converts mechanical energy from at least one mechanical link to hydraulic energy within the self-contained hydraulic power system. Energy applied from the non-rotating portion of the power tong is transferred to the mechanical link that links the fixed portion with the rotating portion of the power tong thus removing the need for rotary seals. The mechanical energy transferred to the self-contained hydraulic power system within the rotating body is used to extend and retract one or more grippers in contact with, for example, a tubular of well equipment drill strings.
    Type: Application
    Filed: November 25, 2013
    Publication date: May 28, 2015
    Applicant: HONGHUA AMERICA, LLC
    Inventors: Guo Qiang George Hu, Milan Cerovsek, Richie Paez