Patents by Inventor Stephen Lionel Watford

Stephen Lionel Watford 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: 5666005
    Abstract: An electrostatic windshield wiper and headlight control circuit, for coupling an automobile windshield wiper circuit with automobile lamps and remotely actuating the automobile lamps; comprising a metal oxide semiconductor field effect transistor (Q1) and a relay. The metal oxide semiconductor field effect transistor (Q1) has an insulated gate for maintaining physical electrical isolation between the windshield wiper and automobile lamp circuits, and for operating with voltage only; it produces and uses static electricity to actuate the actuator circuit of the relay. The relay is for remotely controlling power to the automobile lamps. Voltage from the windshield wiper circuit is used to produce an electrostatic field, which actuates the actuator circuit of the relay, in effect, the isolated switching element of the relay becomes activated, and automatically transfers power directly from the vehicle's battery to connecting lamps. The lamps remain "on" after the wiper circuit is turned "off" to ensure safety.
    Type: Grant
    Filed: November 7, 1995
    Date of Patent: September 9, 1997
    Inventor: Stephen Lionel Watford