Patents by Inventor Frank S. Boyer

Frank S. Boyer 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).

  • Warning light system
    Patent number: 4823109
    Abstract: A warning light system is provided for a vehicle powered by an engine employing an engine brake. The warning system takes a signal from an electrical control line associated with the engine brake and uses the signal to initiate a time delay. After the time delay, a switch is activated, turning on a warning light to warn drivers of other vehicles of the deceleration of the vehicle equipped with the warning light system.
    Type: Grant
    Filed: April 14, 1988
    Date of Patent: April 18, 1989
    Inventor: Frank S. Boyer