Patents by Inventor Terrence F. Eberle

Terrence F. Eberle 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).

  • Error detecting circuit for a traffic control system
    Patent number: 4135145
    Abstract: An error detecting circuit which senses the operating states of a plurality of traffic signal lights the energization of which is controlled by a single block of load switches and which circuit produces an error signal when certain predetermined relations exist for a predetermined period of time between the states of the lights, such as, if more than one traffic signal light of one traffic signal head is energized simultaneously or if none of the traffic signal lights of one traffic signal head is energized.
    Type: Grant
    Filed: September 7, 1976
    Date of Patent: January 16, 1979
    Assignee: Solid State Devices, Inc.
    Inventor: Terrence F. Eberle