Wind power generator with automatic regulation of blade pitch in

Details Wind power generator with automatic regulation of blade pitch in Wind power generator with automatic regulation of blade pitch in

1995-06-07

1997-04-01

Stephan, Steven L.

Prime-mover dynamo plants

Fluid-current motors

Wind

416 53, 416132B, F03D 704, F03D 900

Patent

active

056169639

ABSTRACT:
A wind power generator having a plurality of wind mill blades whose pitch angles stably vary depending upon the wind power. A plurality of spokes radially extend from a horizontal power shaft. A plurality of protrusions respectively projecting from the spokes and the wind mill blades are paired with opposite protrusions by connector shaft. Each blade is rockable within a range from an extremely inclined position to a plane perpendicular to the power shaft to neary 90 degrees to the plane. One side of the wind mill blade strikes on the spoke at the above extremely inclined position. A plurality of blade springs are sandwiched in a compressed state between the spokes and the wind mill blades, surrouding the connector shafts respectively. Thus, each blade is biased toward the closing direction relative to the plane. If the wind is not so strong, each blade faces it to rotate the power shaft. If the wind is too strong, the blade is aligned to the direction of the wind against the blade spring, thereby preventing damage to the blades.

REFERENCES:
patent: 399171 (1889-03-01), Townsend
patent: 588143 (1897-08-01), Hall
patent: 2493895 (1950-01-01), Osterback
patent: 2974731 (1961-03-01), Mader
patent: 4360315 (1982-11-01), Olson
patent: 4566853 (1986-01-01), Likitanupak
patent: 4673822 (1987-06-01), Kikuchi
patent: 4818181 (1989-04-01), Kodric

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