Patents by Inventor Alan C. Ewing

Alan C. Ewing 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).

  • Pusher rotorcraft drivetrain
    Patent number: 10858116
    Abstract: A pusher rotorcraft is provided in one example embodiment and may include at least one engine in mechanical communication with a drop-down gearbox; a driveshaft in mechanical communication with the drop-down gearbox, a main rotor gearbox, and a tail system gearbox; a main rotor system in mechanical communication with the main rotor gearbox; an anti-torque system in mechanical communication with the tail system gearbox; and a pusher propeller system in mechanical communication with the tail system gearbox.
    Type: Grant
    Filed: September 4, 2018
    Date of Patent: December 8, 2020
    Assignee: TEXTRON INNOVATIONS INC.
    Inventors: Levi C. Hefner, Frank B. Stamps, Alan C. Ewing, Jaret F. Burgess, Carey W. Cannon
  • PUSHER ROTORCRAFT DRIVETRAIN
    Publication number: 20200070996
    Abstract: A pusher rotorcraft is provided in one example embodiment and may include at least one engine in mechanical communication with a drop-down gearbox; a driveshaft in mechanical communication with the drop-down gearbox, a main rotor gearbox, and a tail system gearbox; a main rotor system in mechanical communication with the main rotor gearbox; an anti-torque system in mechanical communication with the tail system gearbox; and a pusher propeller system in mechanical communication with the tail system gearbox.
    Type: Application
    Filed: September 4, 2018
    Publication date: March 5, 2020
    Inventors: Levi C. Hefner, Frank B. Stamps, Alan C. Ewing, Jaret F. Burgess, Carey W. Cannon