Patents by Inventor Walter S. Stokes

Walter S. Stokes 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).

  • Centrifugal fan impeller
    Patent number: 4531890
    Abstract: Centrifugal fans are provided comprising impellers having backward inclined blades that are cambered radially inward and that are inclined at an angle less than about 40.degree. relative to the tangential direction of the midpoint of a chord connecting the leading and trailing edges of each blade.
    Type: Grant
    Filed: January 24, 1983
    Date of Patent: July 30, 1985
    Inventor: Walter S. Stokes