Patent ID: 6979170

Claim:
A wind system of the type having a rotating shaft perpendicular to the ground, comprising: a plurality of blades positioned in a pre-strained rigid configuration as the wind system is at rest; a top set of horizontal tensioned wing-beams, said top set of horizontal tensioned wing-beams having a triangular configuration and connecting the blades to a top end of the rotating shaft; and a bottom set of horizontal tensioned wing-beams, said bottom set of horizontal tensioned wing-beams having a triangular configuration and connecting the blades to a bottom end of the rotating shaft; wherein said blades and sets of horizontal tensioned wing-beams form a flexible blade attachment assembly, which tends to get flattened under a centrifugal force and adopts a troposkein shape at a target speed of rotation, said troposkein shape being then maintained by the sets of horizontal tensioned wing-beams.