Patents by Inventor Michael W. Trott

Michael W. Trott 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).

  • Bladed rotor assemblies
    Patent number: 4863347
    Abstract: A bladed rotor assembly comprising:a bladed rotor;an actuator for effecting a change of blade pitch;a first valve member connected to, and movable with, the actuator and having first and second passageways;anda second valve member co-operable with the first valve member and having first and second passageway systems formed therein for communication with the first and second passageways of the first valve member.The first passageway system of the second valve member includes first and second independent passageways, and is provided with a valve, and a bypass incorporating a non return valve. The valve is positioned so that when in a closed position fluid is prevented from entering the first independent passageway.
    Type: Grant
    Filed: September 27, 1988
    Date of Patent: September 5, 1989
    Assignee: Dowty Rotol Limited
    Inventors: Michael W. Trott, Gilbert A. Turner