Patents by Inventor J. Ford Johnston

J. Ford Johnston 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).

  • Wind turbine generator blade and retention system
    Patent number: 5173023
    Abstract: A propeller blade cuff having a root end and a first annular flange at the root end, and a wind turbine generator hub having a second annular flange to be attached to the first flange comprising a clamp ring having multiple sections, the sections having flange-receiving and clamping grooves, each extending part way about the annular flanges; and fastener structure interconnecting the ring sections to exert adjustable tension for adjustably retaining the flanges in the grooves.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: December 22, 1992
    Assignee: Cannon Energy Corporation
    Inventors: Joseph W. Pawlowski, J. Ford Johnston
  • Composite wind turbine rotor blade and method for making same
    Patent number: 4976587
    Abstract: A wind turbine rotor blade including NASA LS (1) - 04xx airfoil sections having a twist not greater than 8.degree. and a construction for such a blade which includes no parting line along the leading edge. The bond between a rectangular spar and the outer skin is reinforced by channels of "C" shaped cross section affixed to the skin and the spar. A method for manufacturing a rotor blade of this construction.
    Type: Grant
    Filed: July 20, 1988
    Date of Patent: December 11, 1990
    Assignee: DWR Wind Technologies Inc.
    Inventors: J. Ford Johnston, William A. Farone, Amir Mikhail