Patents by Inventor Grant W. Coon

Grant W. Coon 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).

  • Trielectrode capacitive pressure transducer
    Patent number: 3948102
    Abstract: A capacitive transducer and circuit especially suited for making measurements in a high-temperature environment. The transducer includes two capacitive electrodes and a shield electrode. As the temperature of the transducer rises, the resistance of the insulation between the capacitive electrode decreases and a resistive current attempts to interfere with the capacitive current between the capacitive electrodes. The shield electrode and the circuit coupled thereto reduces the resistive current in the transducer. A bridge-type circuit coupled to the transducer ignores the resistive current and measures only the capacitive current flowing between the capacitive electrodes.
    Type: Grant
    Filed: July 17, 1975
    Date of Patent: April 6, 1976
    Assignee: The United States of America as represented by the Administrator of the National Aeronautics and Space Administration
    Inventor: Grant W. Coon