Patents by Inventor Quitman W. Lott

Quitman W. Lott 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).

  • Performance envelope extension method for a gas turbine engine
    Patent number: 4854120
    Abstract: The present invention relates to a device for extending the performance life of a gas turbine engine by rotating the turbine after shutdown to achieve uniform cooling. The apparatus includes a motor, a high ratio gearset engaged with the motor, an overridable coupling means engaging the gearset with an accessory shaft of the turbine, and a logic circuit. The circuit determines when the engine has been shut down and continues to rotate the turbine for a predetermined period of time. If an external force interferes with the post-shutdown turning, the circuit will sense that force and compensate for it.
    Type: Grant
    Filed: December 14, 1987
    Date of Patent: August 8, 1989
    Assignee: CEF Industries, Inc.
    Inventors: Neil M. Nelson, William A. Sponzilli, Quitman W. Lott
  • Performance envelope extension device for a gas turbine engine
    Patent number: 4733529
    Abstract: The present invention relates to a device for extending the performance life of a gas turbine engine by rotating the turbine after shutdown to achieve uniform cooling. The apparatus includes a motor, a high ratio gearset engaged with the motor, an overridable coupling means engaging the gearset with an accessory shaft of the turbine, and a logic circuit. The circuit determines when the engine has been shut down and continues to rotate the turbine for a predetermined period of time. If an external force interferes with the post-shutdown turning, the circuit will sense that force and compensate for it.
    Type: Grant
    Filed: September 26, 1986
    Date of Patent: March 29, 1988
    Assignee: CEF Industries, Inc.
    Inventors: Neil M. Nelson, William A. Sponzilli, Quitman W. Lott