Patents by Inventor J. Bradley Crump

J. Bradley Crump 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).

  • Patent number: 4850392
    Abstract: A double poppet area relief valve for use in a well treatment pumping system. The relief valve includes a housing comprising a cylinder and a body. A piston is disposed in the cylinder and has a push rod extending therefrom into the body. A double poppet assembly is attached to an end of the push rod. In one embodiment, the double poppet assembly includes a sealing poppet assembly for sealing with a poppet seat when in a closed position and an orificing poppet assembly for providing throttled fluid flow through the body when in an open position. In a second embodiment, a ring holder is attached to the push rod and has a sealing poppet ring and an orificing poppet ring disposed thereon. The sealing poppet ring and the orificing poppet ring function in a manner similar to the sealing poppet assembly and orificing poppet assembly, respectively, of the first embodiment. With both embodiments, wear is minimized on the sealing poppet so that the valve will reseal on the poppet seat when closed after usage.
    Type: Grant
    Filed: May 13, 1988
    Date of Patent: July 25, 1989
    Assignee: Halliburton Company
    Inventors: J. Bradley Crump, Johnny R. Wells, Phillip N. Naegele