Patents by Inventor Peter N. Hansen

Peter N. Hansen 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).

  • Plunger pump
    Patent number: 5310323
    Abstract: The invention consists of a liquid end for a plunger pump, having vertical inlet and outlet, with the suction and discharge valves readily accessible for maintenance without disturbing the suction and discharge piping. The liquid end also includes a relief valve which is accessible without disturbing suction or discharge piping. The passages to and from the relief valve are internal to the housing. Inserts are provided in the valves to eliminate dead space and to facilitate the removal of any trapped air which might adversely affect the performance of the pump.
    Type: Grant
    Filed: October 8, 1993
    Date of Patent: May 10, 1994
    Assignee: Baker Hughes Incoporated
    Inventor: Peter N. Hansen
  • Plunger pump
    Patent number: 5195876
    Abstract: The invention consists of a liquid end for a plunger pump, having vertical inlet and outlet, with the suction and discharge valves readily accessible for maintenance without disturbig the suction and discharge piping. The liquid end also includes a relief valve which is accessible without disturbing suction or discharge piping. The passages to and from the relief valve are internal to the housing. Inserts are provided in the valves to eliminate dead space and to facilitate the removal of any trapped air which might adversely affect the performance of the pump.
    Type: Grant
    Filed: April 12, 1991
    Date of Patent: March 23, 1993
    Assignee: Baker Hughes Incorporated
    Inventor: Peter N. Hansen