Patents by Inventor Fuquan Chen

Fuquan Chen 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).

  • Systems and methods for raising drilling rig assemblies
    Patent number: 10961780
    Abstract: A mast erection system includes a first mast erection apparatus that is adapted to pivotably raise a drilling rig mast of a drilling rig assembly to an intermediate raised position wherein the drilling rig mast is oriented at a first acute angle relative to a horizontal plane, and a second mast erection apparatus that is adapted to further pivotably raise the drilling rig mast from the intermediate raised position at the first acute angle to a fully raised position wherein the drilling rig mast is oriented at a second angle relative to the horizontal plane that is greater than the first acute angle.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: March 30, 2021
    Assignee: NATIONAL OILWELL VARCO, L.P.
    Inventors: Fuquan Chen, Robert Benjamin Donnally, Hua Jiang
  • SYSTEMS AND METHODS FOR RAISING DRILLING RIG ASSEMBLIES
    Publication number: 20200048965
    Abstract: A mast erection system includes a first mast erection apparatus that is adapted to pivotably raise a drilling rig mast of a drilling rig assembly to an intermediate raised position wherein the drilling rig mast is oriented at a first acute angle relative to a horizontal plane, and a second mast erection apparatus that is adapted to further pivotably raise the drilling rig mast from the intermediate raised position at the first acute angle to a fully raised position wherein the drilling rig mast is oriented at a second angle relative to the horizontal plane that is greater than the first acute angle.
    Type: Application
    Filed: May 9, 2016
    Publication date: February 13, 2020
    Inventors: Fuquan Chen, Robert Benjamin Donnally, Hua Jiang