Curved blade for wind turbines

Details Curved blade for wind turbines Curved blade for wind turbines

2011-07-26

2011-07-26

Kershteyn, Igor (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Radial flow devices

C416S21000A, C416S228000, C416S242000, C416S24400R

Reexamination Certificate

active

07985052

ABSTRACT:
A curved blade for use on horizontal wind turbines, the blade comprising a substantially semicircular tip portion, a substantially semicircular counter-tip portion opposite the tip portion, and a body portion extending between the tip portion and the counter-tip portion, the body portion being further defined by a concave curved trailing edge and a convex curved leading edge.

REFERENCES:
patent: 1953417 (1934-04-01), Lindberg
patent: 2023111 (1935-12-01), Alsing
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patent: 2167050 (1939-07-01), Mohler
patent: 2269287 (1942-01-01), Roberts
patent: 3331444 (1967-07-01), Toner
patent: 5254876 (1993-10-01), Hickey
patent: D352552 (1994-11-01), Oyama et al.
patent: 6719533 (2004-04-01), Bird
patent: 7153100 (2006-12-01), Frampton et al.
patent: 2477595 (2006-02-01), None
patent: 2481341 (2006-04-01), None

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