Patents by Inventor Gregory H. Pruett

Gregory H. Pruett 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).

  • Flame detector self diagnostic system employing a modulated optical signal in composite with a flame detection signal
    Patent number: 5495112
    Abstract: A self diagnostic system for a flame detector. The system produces an optical determinant signal from an analog determinant signal that has a controllable amplitude and frequency. The system detects the optical determinant signal and the optical signal from the flame and processes both signals to thereby continuously monitor the flame while also continuously analyzing the operating status of the flame detector.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: February 27, 1996
    Assignee: Elsag International N.V.
    Inventors: Patrick D. Maloney, Gregory H. Pruett, Taryl W. Vertal