Patents by Inventor James E. Trapple

James E. Trapple 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).

  • Hinged lens holder triggering device
    Patent number: 5398341
    Abstract: An apparatus for closing a hinged lens holder on the front of a welding hood, without using the hands. The apparatus is a spring loaded mechanism using the chin to actuate it.
    Type: Grant
    Filed: November 19, 1993
    Date of Patent: March 21, 1995
    Inventor: James E. Trapple