Patents by Inventor Richard E. Hix

Richard E. Hix 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).

  • Hydrostatic pressure release for bottom hole oil well pumps
    Patent number: 3994338
    Abstract: A subjoint, having a wall port normally closed by a frangible disk, is connected with the depending end of a bottom hole oil well pump below the standing valve for draining fluid out of the tubing when the frangible disk is ruptured.
    Type: Grant
    Filed: November 17, 1975
    Date of Patent: November 30, 1976
    Inventor: Richard E. Hix