Patents by Inventor Martin W. Wirt

Martin W. Wirt 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).

  • Electrically conductive plastic light source
    Patent number: 5685632
    Abstract: The disclosed invention relates to light sources such as battery-powered flashlights and lanterns. Tailcap, battery housing, or head assemblies for light sources are formed from electrically conductive plastic. Those assemblies, or the components of such assemblies, form electrically conductive elements in the electrical circuit of, and may impart shape and structural integrity to, the light source.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: November 11, 1997
    Assignee: Rayovac Corporation
    Inventors: David R. Schaller, Martin W. Wirt
  • Flashlight body
    Patent number: D401372
    Type: Grant
    Filed: January 20, 1998
    Date of Patent: November 17, 1998
    Assignee: Rayovac Corporation
    Inventors: Kai C. A. Yau, Martin W. Wirt, Robert K. Kloppenburg, Jr.