Patents by Inventor Henry K. Pruszynski

Henry K. Pruszynski 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).

  • Circuit breaker with welded contacts
    Patent number: 5184717
    Abstract: The handle of a circuit breaker is blocked from movement to the off positiion, when the contacts are welded closed, thereby preventing rotation of the common cross-bar on which contact arms carrying the movable contacts are mounted, by an interlock which includes radial extensions on the arms of a pivoted handle yoke which radially engage projections on the cross-bar.
    Type: Grant
    Filed: May 29, 1991
    Date of Patent: February 9, 1993
    Assignee: Westinghouse Electric Corp.
    Inventors: Yu W. Chou, Henry K. Pruszynski