Patents by Inventor Jack D. Betterton

Jack D. Betterton 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).

  • Spinner ducted exhaust for pusher turboprop engines
    Patent number: 4892269
    Abstract: A pusher turboprop engine is provided with an interior exhaust duct structure which directs the hot turbine gasses through and out of the engine nacelle to an annular duct mounted on the rear spinner which surrounds the propeller hub. The rotating annular duct includes blade-shaped shields which protect the roots of the propeller blades from the hot exhaust gasses and also pulls warmed cooling air through the engine nacelle thereby providing a rearwardly directed jet thrust to augment the propeller thrust.
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: January 9, 1990
    Assignee: Allied-Signal Inc.
    Inventors: Robert J. Greco, Jack D. Betterton