Patents by Inventor Ted D. Williams

Ted D. Williams 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).

  • Gate valve
    Patent number: 5370362
    Abstract: An improved gate for a gate valve will allow shearing of a wireline extending through the gate valve while preserving post-shear seal integrity. The improved gate comprises an inlay of a hard ductile material such as Stellite along the shearing edge of the gate. The gate also comprises a coating of an extremely hard material such as tungsten carbide on the sealing surface of the gate. The invention also covers an improved gate seat. The improved seat also comprises an inlay of a hard ductile material such as Stellite along its shearing edge. The improved seat can also have a coating of an extremely hard material such as tungsten carbide on part of its sealing surface.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: December 6, 1994
    Assignee: ABB Vetco Gray Inc.
    Inventors: Peter M. Kent, Anton J. Dach, Hernani G. Deocampo, Ted D. Williams