Patents by Inventor Robert J. Jupe

Robert J. Jupe 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).

  • Helicopter rotor speed changing transmission
    Patent number: 4783023
    Abstract: A helicopter has two engines adapted to drive a main sustaining rotor and a plurality of auxiliary propulsion means through a transmission system that is selectively operable to vary the relative speeds of rotation of the sustaining rotor and the auxiliary propulsion means depending upon operating conditions.
    Type: Grant
    Filed: October 13, 1987
    Date of Patent: November 8, 1988
    Assignee: Westland Group plc
    Inventor: Robert J. Jupe