Patents by Inventor Terrell R. Whitaker

Terrell R. Whitaker 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).

  • Plug assembly for sealing a pressure fluid passage in a manifold or the like
    Patent number: 4421137
    Abstract: A plug assembly comprising a generally cylindrical expansion sleeve having a socket portion which receives a wedging nut. One of the nut and socket portion is tapered such that the sleeve may be radially expanded as the nut enters more deeply into the socket portion. A screw element is threadedly received by the nut and by a clearance opening through the sleeve. The screw element is provided with a head which engages the sleeve on the side axially opposite the socket portion whereby threading of the screw element into the nut draws the latter more deeply into the socket portion. The outer periphery of the sleeve is preshaped to be out-of-round to provide for an interference fit with a cylindrical bore which is to be plugged.
    Type: Grant
    Filed: February 2, 1981
    Date of Patent: December 20, 1983
    Assignee: PHD, Inc.
    Inventors: Kay T. Nusbaumer, Terrell R. Whitaker