Patents by Inventor Jimmy G. Livingston, Jr.

Jimmy G. Livingston, Jr. 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).

  • Patent number: 7464765
    Abstract: An improved ram inner seal assembly used in ram-type BOPs is disclosed. The disclosed invention provides an inner guide seal assembly that comprises a specially shaped guide body and a separate sealing element. When the ram-type BOP is closed, two opposing rams move toward one another, and the inner guide seal assembly guides a wireline (or other tubular) toward the center of the vertical bore through the BOP. The inner guide seal assembly's proximity to the ram body's centerline axis helps ensure that a positive seal is formed and that no damage occurs to the device in the central bore of the BOP. The separate, specially-shaped sealing element can be easily inserted into and removed from the guide body of the inner guide seal assembly for easy replacement.
    Type: Grant
    Filed: August 24, 2005
    Date of Patent: December 16, 2008
    Assignee: National-Oilwell DHT, L.P.
    Inventors: C. Steven Isaacks, Harry P. Hiebeler, Noe Tony Cordova, Jimmy G. Livingston, Jr., Russell C. Gilleylen, Haresh Ghansyam
  • Patent number: 7461700
    Abstract: A C-plate assembly for use in a cable-guided fishing assembly is disclosed. The disclosed invention provides a C-plate assembly in which a closure member is slidable from an open position, which allows a wellbore tubular or other item to be positioned in the cut-out section of the C-plate base, to a closed position, which closes the opening to the cut-out section and thereby prevents the wellbore tubular or other item from being unintentionally knocked free from the cut-out section during a fishing operation. The closure member is locked in place in the closed position by inserting the ends of a movable handle extending off of one side of the C-plate base into openings in the C-plate base. The ends of the movable handle are spring loaded to allow for the ends to be pulled out of the openings in the C-plate base such that the closure member can be “unlocked” and moved from a closed position to an open position during operation.
    Type: Grant
    Filed: September 1, 2005
    Date of Patent: December 9, 2008
    Assignee: National Oilwell, L.P.
    Inventors: Jimmy G. Livingston, Jr., Jay K. Motley, Filiberto Garcia, C. Steven Isaacks, Noe Tony Cordova, James R. Streater, Jr.