Patents by Inventor Richard E. Wheelis

Richard E. Wheelis 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).

  • Bearingless tail rotor for helicopters
    Patent number: 4306837
    Abstract: A helicopter tail rotor structure includes a thin, flat, tension-bearing strap of fibers extending spanwise, and is to be centrally secured by a hub to a helicopter tail mast. Flex sections are formed inboard of substantially equally divided portions of said fibers which extend as top and bottom blade spars from the outboard margins of the flex sections. Preferably, the planes of the flex sections and the planes of the spars are oriented at predetermined nose-up twist angles, one relative to the other.
    Type: Grant
    Filed: April 24, 1979
    Date of Patent: December 22, 1981
    Assignee: Textron, Inc.
    Inventors: Vas H. Brogdon, Cecil E. Covington, Richard E. Wheelis