Patents by Inventor W. Robertson Selman, Jr.

W. Robertson Selman, Jr. 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).

  • Apparatus and method for deriving energy from a moving gas stream
    Patent number: 4457666
    Abstract: There is provided a method and device for converting energy from a moving gas stream with improved efficiency. One embodiment of the apparatus includes a frame mounted on a rotatable shaft. The frame has working blades and discharge blades mounted thereon, the arrangement of the discharge blades being sufficient to materially reduce any back pressure on the working blades. Flow control means are operatively connected to the frame for substantially normalizing the flow of the moving gas stream as at impinges on the working and discharge blades.
    Type: Grant
    Filed: April 14, 1982
    Date of Patent: July 3, 1984
    Assignee: The Windgrabber Corporation
    Inventor: W. Robertson Selman, Jr.