Patents by Inventor H. Prescott Sleeper, Jr.

H. Prescott Sleeper, 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).

  • Compound coaxial windmill
    Patent number: 4370095
    Abstract: A horizontal axis windmill in which there is employed a conventional propeller mounted at one end of a fuselage housing a generator, and there is also located in the fuselage an induction fan. The fan functions to increase the volume of air moving through the propeller and in a direction coordinate with the direction of rotation of the propeller, thus to improve the efficiency of the windmill.
    Type: Grant
    Filed: November 3, 1980
    Date of Patent: January 25, 1983
    Inventor: H. Prescott Sleeper, Jr.