Patents by Inventor Qingshan Yuan

Qingshan Yuan 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).

  • Ultrasonic probe apparatus, system, and method for detecting flaws in a tubular
    Patent number: 8196472
    Abstract: An ultrasonic probe apparatus for detecting flaws in a tubular includes a probe house. The probe house has an axial axis, a central cavity lying along the axial axis, and a bottom face adapted for placement on the tubular. The bottom face of the probe house has an opening in the middle. A probe support is disposed within the central cavity and rotatable about the axial axis of the probe house. An ultrasonic probe is mounted on the probe support and has a scanning face exposed to the opening of the bottom face of the probe house. The scanning face is tiltable relative to a selected plane of the tubular by rotation of the probe support about the axial axis of the probe house.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: June 12, 2012
    Assignee: National Oilwell Varco, L.P.
    Inventors: Clive C. Lam, Yanming Guo, Qingshan Yuan
  • Membrane-coupled ultrasonic probe system for detecting flaws in a tubular
    Patent number: 8166823
    Abstract: An ultrasonic probe apparatus for detecting flaws in a tubular includes a probe housing. The probe housing has an axial axis, a central cavity lying along the axial axis, and a bottom face adapted for placement on the tubular. The bottom face of the probe housing has an opening in the middle. A probe support is disposed within the central cavity and rotatable about the axial axis of the probe housing. An ultrasonic probe is mounted on the probe support and has a scanning face exposed to the opening of the bottom face of the probe housing, and may be coupled to the pipe with a liquid acoustic couplant medium.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: May 1, 2012
    Assignee: National Oilwell Varco, L.P.
    Inventors: Clive C. Lam, Yanming Guo, Kevin D. Logan, Qingshan Yuan
  • Ultrasonic Probe Apparatus, System, and Method for Detecting Flaws in a Tubular
    Publication number: 20110072904
    Abstract: An ultrasonic probe apparatus for detecting flaws in a tubular includes a probe house. The probe house has an axial axis, a central cavity lying along the axial axis, and a bottom face adapted for placement on the tubular. The bottom face of the probe house has an opening in the middle. A probe support is disposed within the central cavity and rotatable about the axial axis of the probe house. An ultrasonic probe is mounted on the probe support and has a scanning face exposed to the opening of the bottom face of the probe house. The scanning face is tiltable relative to a selected plane of the tubular by rotation of the probe support about the axial axis of the probe house.
    Type: Application
    Filed: September 29, 2009
    Publication date: March 31, 2011
    Inventors: Clive C. Lam, Yanming Guo, Qingshan Yuan
  • Membrane-Coupled Ultrasonic Probe System for Detecting Flaws in a Tubular
    Publication number: 20110072905
    Abstract: An ultrasonic probe apparatus for detecting flaws in a tubular includes a probe housing. The probe housing has an axial axis, a central cavity lying along the axial axis, and a bottom face adapted for placement on the tubular. The bottom face of the probe housing has an opening in the middle. A probe support is disposed within the central cavity and rotatable about the axial axis of the probe housing. An ultrasonic probe is mounted on the probe support and has a scanning face exposed to the opening of the bottom face of the probe housing, and may be coupled to the pipe with a liquid acoustic couplent medium.
    Type: Application
    Filed: June 8, 2010
    Publication date: March 31, 2011
    Inventors: Clive C. Lam, Yanming Guo, Kevin D. Logan, Qingshan Yuan