Patents by Inventor John D. Cotner

John D. Cotner 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: 6206482
    Abstract: An electronic brake management system for controlling the application of fluid pressure to the brakes associated with wheels on a vehicle is disclosed. The system comprises a plurality of hydraulic valves for controlling the application of fluid to the brakes and a plurality of valve drivers for controlling the valves in accordance with respective electrical control signals for the plurality of valves. The system further includes a valve pulse width modulation controller for generating the respective electrical valve control signals applied to the valve drivers. The electrical valve control signals from the pulse width modulation controller are modulated to reduce the amount of electrical power supplied by the individual ones of the electrical signals once the valve associated with the one of the electrical signals has changed its opening to a desired position.
    Type: Grant
    Filed: November 2, 1999
    Date of Patent: March 27, 2001
    Assignee: Kelsey-Hayes Company
    Inventors: Gregory P. Campau, Mark S. Luckevich, Edward R. Hornback, John D. Cotner, Clark E. Lowman