Patents by Inventor Daniel G. Taft

Daniel G. Taft 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).

  • Riser tensioner system
    Patent number: 4272059
    Abstract: A tensioner system is disclosed for applying tension to a riser pipe extending between a floating vessel and the sea bottom. The tensioner comprises a guide means fixed onto the floating vessel for restraining guide members from substantial lateral movement relative to the vessel while permitting relative vertical motion of the guide members, means on the vessel for applying vertical tension to the guide members and suitable means for connecting the guide members to the riser such that the vertical tension applied to the guide members is substantially the same as the vertical tension applied to the riser.
    Type: Grant
    Filed: May 21, 1979
    Date of Patent: June 9, 1981
    Assignee: Exxon Production Research Company
    Inventors: Jere A. Noerager, Daniel G. Taft, John M. Bednar
  • Subsea riser and flotation means therefor
    Patent number: 4176986
    Abstract: A marine drilling riser is provided with a plurality of buoyancy cans having fail safe dump valves operative to vent compressed gas from the buoyancy cans and thereby cause rapid loss of buoyancy.
    Type: Grant
    Filed: November 3, 1977
    Date of Patent: December 4, 1979
    Assignee: Exxon Production Research Company
    Inventors: Daniel G. Taft, Joe K. Heilhecker