Patents by Inventor Edward L. Ray

Edward L. Ray 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).

  • Liner for centrifugal slurry pumps
    Patent number: 6582191
    Abstract: An abrasion-resistant liner assembly for the suction branch of a centrifugal pump of the type having a suction connection for mating with a suction source, and a relief annulus formed in the suction connection, including a cylindrical liner, a groove formed in the outer surface of the liner and extending circumferentially around the liner, a seat ring positioned within the groove, and a seat ring holder positioned adjacent the seat ring on the inner end of the liner, wherein when the liner is positioned within the suction branch and the suction flange is mated with a suction source, the seat ring projects into the relief annulus, and the seat ring holder prevents axial movement of the liner.
    Type: Grant
    Filed: January 22, 2002
    Date of Patent: June 24, 2003
    Assignee: GIW Industries, Inc.
    Inventors: Graeme R. Addie, Edward L. Ray
  • Liner for centrifugal slurry pumps
    Publication number: 20030035721
    Abstract: An abrasion-resistant liner assembly for the suction branch of a centrifugal pump of the type having a suction connection for mating with a suction source, and a relief annulus formed in the suction connection, including a cylindrical liner, a groove formed in the outer surface of the liner and extending circumferentially around the liner, a seat ring positioned within the groove, and a seat ring holder positioned adjacent the seat ring on the inner end of the liner, wherein when the liner is positioned within the suction branch and the suction flange is mated with a suction source, the seat ring projects into the relief annulus, and the seat ring holder prevents axial movement of the liner.
    Type: Application
    Filed: January 22, 2002
    Publication date: February 20, 2003
    Inventors: Graeme R. Addie, Edward L. Ray