Windmill

Details Windmill Windmill

1979-02-26

1981-09-22

Truhe, J. V.

Prime-mover dynamo plants

Fluid-current motors

Wind

290 44, 310 67R, 310156, 416240, F03D 900, H02P 904, H02K 700, B63H 126

Patent

active

042912350

ABSTRACT:
This invention relates generally to an improved windmill design that combines the blade and rotor support system with the electrical generating system in such a way as to simplify the windmill construction. Specifically, it eliminates the need for shafts, gears, and other coupling devices between the turbine blade system and the electrical generating system. In addition, the windmill design also includes a means for varying the pitch of the turbine blades automatically so as to provide near-optimum blade angles under varying wind conditions, and a tendency toward self-governing at high wind speeds. Furthermore, the blades are attached rigidly to the hub without the need for bearings or other mechanical couplings. Blade pitch changes are produced by twisting the blades elastically by forces produced by fixed weights. The effect of these features individually and in combination is to reduce the complexity of the wind turbine, the generating system, and their associated parts.

REFERENCES:
patent: 2248218 (1941-07-01), Daniels
patent: 3275082 (1966-09-01), Stark
patent: 3860843 (1975-01-01), Kawasaki et al.
Wind Power Digest, Spring 1978, pp. 6-9.

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