Patents by Inventor Harold E. Powers

Harold E. Powers 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).

  • Downhole formation pump
    Patent number: 5220829
    Abstract: A downhole formation test pump includes a progressive cavity pump having a helical rotor received in a helical cavity of a stator. The pump may be disengaged by withdrawing the rotor from the stator to provide a bypass position so that the downhole formation being tested can be allowed to flow freely if it is capable.
    Type: Grant
    Filed: October 23, 1990
    Date of Patent: June 22, 1993
    Assignee: Halliburton Company
    Inventors: Kevin R. Manke, David R. Smith, Harold E. Powers