Patents by Inventor Harold P. Kopp

Harold P. Kopp 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).

  • Patent number: 4878852
    Abstract: A ground pin construction for an electrical device having a housing and prongs for insertion into an electrical socket, the housing including a boss having a bore therein for guiding the ground pin between extended and retracted positions, a flexible member attached to the ground pin and movable by a button which protrudes through the housing, cam surfaces on the housing which cause the elongated flexible member to ride over them as the ground pin is being moved to an extended position, and interengaging shoulders between the flexible member and the housing for retaining the ground pin in an extended position after the flexible member rides over the cam structure, the flexible member being deflectable by depressing on the button so that the flexible member can be disengaged from the shoulder on the housing and the ground pin can be moved to a retracted position by pushing on the button.
    Type: Grant
    Filed: June 3, 1988
    Date of Patent: November 7, 1989
    Assignee: Polytronics, Inc.
    Inventors: Jack E. Bertsch, Harold P. Kopp
  • Patent number: D312583
    Type: Grant
    Filed: March 14, 1988
    Date of Patent: December 4, 1990
    Assignee: Polytronics, Inc.
    Inventor: Harold P. Kopp