Patents by Inventor John S. Sultzbaugh

John S. Sultzbaugh 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).

  • Variable pitch propeller for use in conjunction with a vertical axis wind turbine
    Patent number: 5256034
    Abstract: A variable pitch propeller mechanism includes a plurality of airfoil-shaped blades on three spaced apart blade arms. The airfoil-shaped blades are pivotally connected to the blade arms and are interconnected to each other by rigid connecting rods so these blades move in unison in response to changing wind conditions. Air flow across the airfoil-shaped blades is also controlled to improve the efficiency of the device.
    Type: Grant
    Filed: April 19, 1991
    Date of Patent: October 26, 1993
    Inventor: John S. Sultzbaugh