Patents by Inventor Peter Dennis Turnbull

Peter Dennis Turnbull 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).

  • Take-off warning system for aircraft
    Patent number: 4121194
    Abstract: A logic controlled take-off warning system having a circuit for enabling the logic controlled take-off warning system at engine thrust levels exceeding a predetermined value which is less than minimum take-off thrust of the aircraft and greater than trust required for normal ground operations, provided also that the aircraft is on the ground. When the logic controlled take-off warning system is enabled, a take-off warning horn is subsequently energized when any one of a plurality of undesired take-off configurations exists.
    Type: Grant
    Filed: September 30, 1976
    Date of Patent: October 17, 1978
    Assignee: The Boeing Company
    Inventors: Thomas James Downey, Peter Dennis Turnbull, James Walter Gayther