Patents by Inventor Henry Kenneth Pruszynski

Henry Kenneth 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 an anti-lift pivot handle
    Patent number: 5973280
    Abstract: A circuit breaker handle is provided with a curved bearing surface at its pivot point. The handle bearing surface has a substantially constant radius and is connected to the body of the handle with a necked down handle extension. The handle extension has a width that is less than the width of the curved bearing surface at the point of connection between the bearing surface and the necked down region. The handle pivot mates with a corresponding bearing surface on a notch in the side plate that it pivots within. The arc of the curved bearing surface in the side plate is greater than that of the corresponding bearing surface on the handle and captures the handle pivot within the notch in the sideplate, so the handle cannot lift off the bearing surface on the notch as it is moved.
    Type: Grant
    Filed: March 23, 1998
    Date of Patent: October 26, 1999
    Assignee: Eaton Corporation
    Inventors: Lance Gula, Yu Wei Chou, Henry Kenneth Pruszynski, James Alan Trax, Trent Allan Chontas