Patents by Inventor George S. Lawrie

George S. Lawrie 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).

  • Optical touch panel with heat sink
    Patent number: 4880969
    Abstract: A programmable touch panel comprises an interactive control/display panel having the capability of entering and updating information to a host computer via a plurality of multifunction programmable keys. An optical switch is associated with each key for operator selection. Each key includes a light source mounted to a circuit board for sending a light beam through a hole in a heat sink toward a reflector that directs the beam across a touch panel. A second reflector then directs the beam through a second hole in the heat sink toward a detector mounted on the circuit board.
    Type: Grant
    Filed: August 26, 1988
    Date of Patent: November 14, 1989
    Assignee: Litton Systems, Inc.
    Inventor: George S. Lawrie