Patent ID: 7887283

Claim:
A wind turbine apparatus reactive to fluid flow for generating energy comprising: a turbine assembly ( 64 ) supported for rotation about a turbine axis (B), said turbine assembly ( 64 ) including at least one turbine blade ( 84 ) having a first end ( 86 ) disposed on a first end radial (R 1 ) extending radially from said turbine axis (B) along a chord (C) spaced radially from said turbine axis (B) and extending axially from said first end ( 86 ) back to a second end ( 88 ) on said turbine axis (B) at a position spaced axially along said turbine axis (B) from said first end radial (R 1 ) thereof, and characterized by said turbine blade ( 84 ) presenting a face ( 98 ) defined by said chord (C) and extending from said first end ( 86 ) having said chord (C) coincident to said first end radial (R 1 ) to said second end ( 88 ) at a varying angle of attack between said first end radial (R 1 ) and said turbine axis (B) to position a portion of said turbine blade ( 84 ) perpendicularly to fluid flow at various transverse angles to said turbine axis (B), said chord (C) of said second end ( 88 ) of said turbine blade ( 84 ) being coincident to said turbine axis (B) with said turbine blade ( 84 ) extending from said turbine axis (B) on a second end radial (R 2 ) and said second end radial (R 2 ) being spaced angularly about said turbine axis (B) by a first angle (θ) from said first end radial (R 1 ).