Patents by Inventor Jefferson D. Hendricks

Jefferson D. Hendricks 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).

  • Digital traffic control system
    Patent number: 4857921
    Abstract: A digital control system for controlling the flow of traffic in selected directions in response to digital signals transmitted from a common transmitting control unit to multiple separate receiving traffic control units respectively associated with each controlled direction. The transmitting unit includes a transmitter and digital command code generator operative when actuated to transmit a character in the form of a digital signal specific for one of the receiving units. Each receiving unit includes traffic control indicators operative in different modes of display indications visible to traffic flowing in the direction to be controlled by that unit.
    Type: Grant
    Filed: May 30, 1986
    Date of Patent: August 15, 1989
    Assignee: Flagman, Inc.
    Inventors: William B. McBride, William R. Wilson, Jr., John C. Tomlinson, John A. McCarthy, Eugene W. Kochanowsky, Jefferson D. Hendricks, Arthur J. Houle