Patents by Inventor Martin E. Duga

Martin E. Duga 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).

  • Method and apparatus for preventing relative rotation of tube members in a control rod drive mechanism
    Patent number: 6275556
    Abstract: A control rod drive mechanism includes a first tubular member having a first threaded portion and a first generally cylindrical outer surface, the first tubular member including a first plurality of slots spaced circumferentially on the first outer surface and extending in a direction parallel to the axis of the first tubular member, and a second tubular member having a second threaded portion and a second generally cylindrical outer surface, the second tubular member including a second plurality of slots spaced circumferentially on the second outer surface and extending in a direction parallel to the axis of the second tubular member. The first and second tubular members are axial aligned with the first and second threaded portions being engaged with each other to form a threaded joint therebetween. A locking sleeve overlaps at least a portion of the first outer surface of the first tubular member and at least a portion of the second outer surface of the second tubular member.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: August 14, 2001
    Assignee: Westinghouse Electric Company LLC
    Inventors: Calvin L. Kinney, Richard Frank Guardiani, Martin E. Duga