Patents by Inventor Franklyn J. Davenport

Franklyn J. Davenport 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).

  • Thrust reversing system for counter rotating propellers
    Patent number: 5054998
    Abstract: A method of creating thrust reversal for an engine having counter-rotating forward and rear propeller blades. The forward blades are set at a positive angle of attack to produce an orderly flow of air toward the rear blades. The rear blades are set at a negative angle of attack to produce reverse thrust. The net effect is that the thrust produced by the rear blades overbalances that of the forward blades to produce net thrust reversal.
    Type: Grant
    Filed: September 30, 1988
    Date of Patent: October 8, 1991
    Assignee: The Boeing Company, Inc.
    Inventor: Franklyn J. Davenport