Patents by Inventor Herman K. Duke

Herman K. Duke 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: 4554419
    Abstract: A touch-sensitive selection panel structure for a vending machine including a pressure-sensitive membrane-type switch contained between first and second polycarbonate panels comprising the display panel of the vending machine. The touch-sensitive switch configuration is totally transparent to visible light. A product selector window array on the first polycarbonate panel is back-illuminated from within the vending machine with images of the vendable products available, for display in the selector windows on the front face of the vending machine display panel. The images are provided on the back face of the second polycarbonate panel within the vending machine and illuminated from behind in order to project the names and product logos through the membrane switch, and the first polycarbonate panel for viewing by a potential customer.
    Type: Grant
    Filed: December 2, 1983
    Date of Patent: November 19, 1985
    Assignee: The Coca-Cola Company
    Inventors: Eddie W. King, Herman K. Duke, Don S. Summerville
  • Patent number: D288574
    Type: Grant
    Filed: December 2, 1983
    Date of Patent: March 3, 1987
    Assignee: The Coca-Cola Company
    Inventors: Eddie W. King, Herman K. Duke, Don S. Summerville
  • Patent number: D294958
    Type: Grant
    Filed: December 18, 1986
    Date of Patent: March 29, 1988
    Assignee: The Coca-Cola Company
    Inventors: Eddie W. King, Herman K. Duke, Don S. Summerville