Patent ID: 7980825

Claim:
A Savonius vertical axis wind turbine rotor comprising; a plurality of spokes, each spoke comprising a hub having a substantially central opening, three at least partially arcuate ribs extending substantially radially outwardly from said hub with inner and outer surfaces, and a plurality of channels defined in at least one of said inner and outer surface of each said rib; a plurality of vanes of sheet material generally conforming to an inner or outer surface of a said rib and having openings therein operatively aligned with said channels; and first fasteners passing through said openings into said channels and cooperating with second fasteners provided within said channels to securely hold said vanes to said ribs, so that said vanes assume an at least partially curved configuration presenting alternately a substantially concave and substantially convex curvature to wind as the rotor rotates about a substantially vertical axis.