Patents by Inventor Michael James Sims

Michael James Sims 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).

  • Solids strainer system for a hydraulic choke
    Patent number: 7275606
    Abstract: The invention contemplates a strainer based upon a four-way, two-position rotary cylindrical plug valve having a hollow plug. The normal entry port for the sealing plug of the plug valve is a circular radial hole passing from the exterior of the plug into the interior cavity of the plug. The normal exit port for the sealing plug is a regular array of small holes across from and coaxial with the normal entry hole. The ports for the valve body are in two pairs positioned at 90° from each other, with the axes of the ports lying in the same transverse plane as the ports of the valve plug.
    Type: Grant
    Filed: May 4, 2007
    Date of Patent: October 2, 2007
    Assignee: Expro Americas, L.P.
    Inventors: Donald Glynn Sims, Michael James Sims, Robert Frank Schmidt, David Anthony Schmidt, John Walton McCaskill