Patents by Inventor Patrick W. Dunn

Patrick W. Dunn 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).

  • Pivoting control valve actuator and support assembly
    Patent number: 5074325
    Abstract: A steam turbine control valve actuator for lever-operated control valves includes a servomechanical actuator with a reciprocable rod. Such servomechanical actuator is mounted upon a support assembly that is, in turn, pivotably mounted to the control valve body. A distal end of the rod is coupled by a knuckle joint to one end of the lever which operates the control valve, and forces of the rod are biased by a spring that substantially eliminates side forces on the rod through maintenance of the effort that is applied to the lever by the rod in a direction that is parallel to the rod.
    Type: Grant
    Filed: February 16, 1990
    Date of Patent: December 24, 1991
    Assignee: Westinghouse Electric Corp.
    Inventors: Ronald F. Rumberger, Patrick W. Dunn