Patents by Inventor Joseph R. Cowgill

Joseph R. Cowgill 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).

  • Method and apparatus for controlling thrust in a gas turbine engine
    Patent number: 4275557
    Abstract: Gas turbine engine thrust is controlled by automatically adjusting compressor rotational speed with novel functions of engine inlet temperature to hold thrust to rated values for varying engine inlet temperature conditions. Furthermore, compressor rotational speed is automatically adjusted as a function of inlet pressure to provide a thrust rating schedule which varies with altitude. Compressor corrected rotational speed is limited through a novel function of engine inlet temerature to protect against turbine overtemperature when the engine inlet temperature exceeds the flat thrust rating point.
    Type: Grant
    Filed: January 25, 1978
    Date of Patent: June 30, 1981
    Assignee: General Electric Company
    Inventors: Ira E. Marvin, Joseph R. Cowgill