Patent ID: 8226348

Claim:
A vertical axis rotor-type wind turbine, comprising: a rotor shaft that extends along a vertical axis of the wind turbine; and a rotor structure including at least two aerodynamic blocks of blades, each respective block of blades including a plurality of subsonic aerodynamic blades motionlessly fixed to and extending vertically between an upper shroud flange and a lower shroud flange, each upper shroud flange being separate and distinct from each other upper shroud flange and each lower shroud flange being separate and distinct from each other lower shroud flange, and a plurality of pairs of supporting arms mounted on the rotor shaft and spaced circumferentially at equal angles around the vertical axis of the wind turbine, wherein each respective one of the blocks of blades is mounted on a respective pair of supporting arms near a periphery of the rotor and is laterally displaced with respect to a line that extends radially from the vertical axis of the wind turbine by a selected blade deflection value.