Patents by Inventor Arthur W. Braman

Arthur W. Braman 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).

  • Dual ball upper internal blow out preventer valve
    Patent number: 8752653
    Abstract: An internal blowout preventer used in drilling rigs for the discovery and production of hydrocarbons from the earth is disclosed. The internal blowout preventer has two independently and remotely operable blowout preventer valves in the same body, providing for greater service life and higher reliability during drilling operations. The two valves are loaded into the internal blowout preventer housing from a single end, and are operable by an actuator assembly.
    Type: Grant
    Filed: March 10, 2011
    Date of Patent: June 17, 2014
    Assignee: National Oilwell Varco, L.P.
    Inventors: Padmasiri Daya Seneviratne, Lawrence E. Wells, Arthur W. Braman, Preston R. Fox
  • DUAL BALL UPPER INTERNAL BLOW OUT PREVENTER VALVE
    Publication number: 20110226485
    Abstract: An internal blowout preventer used in drilling rigs for the discovery and production of hydrocarbons from the earth is disclosed. The internal blowout preventer has two independently and remotely operable blowout preventer valves in the same body, providing for greater service life and higher reliability during drilling operations. The two valves are loaded into the internal blowout preventer housing from a single end, and are operable by an actuator assembly.
    Type: Application
    Filed: March 10, 2011
    Publication date: September 22, 2011
    Applicant: NATIONAL OILWELL VARCO, L.P.
    Inventors: Padmasiri Daya Seneviratne, Lawrence E. Wells, Arthur W. Braman, Preston R. Fox