Patents by Inventor James F. Frakes

James F. Frakes 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).

  • Wing tip vortices suppressor
    Patent number: 4478380
    Abstract: A wing tip vortices suppressor utilizing a scoop having an inlet at the lower, leading surface of the wing and an outlet at the upper, trailing surface to reduce turbulence causing pressure differential across the wing. A turbulence fence is used at the tip to account for the frictional losses of the air flowing through the scoop and other phenomena that prevent exact pressure equilization.
    Type: Grant
    Filed: December 3, 1982
    Date of Patent: October 23, 1984
    Inventor: James F. Frakes