Patents by Inventor Steve L. DeBoalt

Steve L. DeBoalt 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: 5067751
    Abstract: A self-actuating restraining gasket having optional integral sealing means is provided which is used particularly in bell-and-spigot pipe joints or joints employing pipe appurtenances, and more particularly in joints to be assembled in the field, the bell end of the pipe or pipe appurtenance to be employed having an annular recess adapted to receive the gasket therein, the gasket further employing a plurality of pairs of cooperating metal retaining elements embedded in the elastomeric gasket, the pairs of retaining elements being spaced apart around the circumference of the gasket, each pair of retaining elements comprising a wedging member and a backing member for the wedging member, and wherein the pairs of retaining elements act as the self-actuating retention or restraining elements, and an optional compressible back part of the gasket acts as a fluid seal when a pipe spigot is inserted in the bell.
    Type: Grant
    Filed: July 27, 1990
    Date of Patent: November 26, 1991
    Assignee: American Cast Iron Pipe Company
    Inventors: Van T. Walworth, Steve L. DeBoalt