Wind turbine
OwnerGerlando J. Locastro, Peter P. Giemschinventors
Life of this patent
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Abstract
A wind turbine has a shaft rotatable about an axis, and a plurality of blades mounted on the shaft and arranged to be rotated by wind and thereby rotate the shaft, wherein each of the blades has an outer portion which has an outer edge formed at the outer end of a radius with a center at the axis of the shaft and extends rearwardly from the outer edge over a circumference described from the center, and each of the blades has an inner edge which is rearwardly offset relative to the outer edge in a direction which is normal to the radius.
Claims9
A wind turbine, comprising a shaft rotatable about an axis;
- and a plurality of blades mounted on said shaft and arranged to be rotated by wind and to thereby rotate said shaft, each of said blades having an outer portion which has an outer edge formed at the outer end of a radius with a center at said axis and extends only rearwardly from said outer edge over a circumference described from said center, each of said blades having an inner edge which is rearwardly offset relative to said outer edge and also from said radius in a direction which is normal to said radius by a predetermined distance, said outer portion having a length which corresponds to said distance, each of said blades having a central portion including a radially outer section and a radially inner section formed so that said radially outer section is concave toward said radius and described from a center which is offset from said radius in the normal direction by said distance, whereas said radially inner section is convex toward said radius.
A wind turbine as defined in claim 13, wherein said axis is an upright axis, said plurality of blades including a first group of upper blades located above and a second group of lower blades located below, the blades of one of said groups being offset relative to the blades of the other of said groups in a circumferential direction.
Dependencies are inferred from the claim text.