Patents by Inventor Geoffrey Allan Williams

Geoffrey Allan Williams 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).

  • Vehicle battery controller
    Patent number: 5977744
    Abstract: The vehicle battery controller includes a controller for interconnecting an auxiliary battery to a main battery for engine starting or charging. If the auxiliary battery voltage is lower than a first threshold before engine starting its subsequent use is inhibited. If the main battery voltage exceeds the auxiliary battery voltage by more than a predetermined margin, the auxiliary battery is not used for engine starting. When the engine is running and the charging system is operating, the auxiliary battery is disconnected when the common voltage is below a second threshold.
    Type: Grant
    Filed: October 22, 1997
    Date of Patent: November 2, 1999
    Assignee: Lucas Industries
    Inventors: Geoffrey Allan Williams, Neville Gresty