Fluid reaction surfaces (i.e. – impellers) – Buoyant or inflatable working member
Patent
1976-01-21
1978-04-11
Schaefer, Robert K.
Fluid reaction surfaces (i.e., impellers)
Buoyant or inflatable working member
415141, 416240, F04D 2918
Patent
active
040836525
ABSTRACT:
A centrifugal air-driven motor, or windmill, is disclosed wherein the blades thereof are made of a pliable, flexible, uniformly apertured sheeting made, for example, of plastic, affixed by a flexible support system, to a central rotatable shaft, so that as the apertured plastic sheet is moved centrifugally outwardly, under the influence of wind energy, the solid portions of the plastic sheet assume the shape of blades; further, the blade support system is made completely of thin, flexible, pliable, material, such as plastic, and the blades may assume different, e.g., forward curved, radial, or backward inclined configurations, during rotation of the windmill. The blades and support means therefor, are affixed to a central, axial, rotatable shaft. As the blades are driven, by wind force, their rotation is transmitted to the rotatable, axial, shaft through the blade support means, to thereby cause rotation of the axial shaft. The shaft rotation is transmitted to a generator, or other means, for making use of the energy collected by the windmill of this invention. Windmills following this principle can be made of enormous size, e.g., 50 - 150 feet or greater in diameter, and can deliver millions of horsepower. The inflatable air motor here disclosed is lighter, and more compact, when deflated, than comparably-sized rigid windmills. At the same time, performance of the centrifugal air motor here disclosed generally conforms to that of similarly sized rigid windmills in rpm and horsepower delivered.
REFERENCES:
patent: 1868113 (1932-07-01), Ljungstrom
Drucker I. Morley
Redman John W.
Schaefer Robert K.
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