Patent ID: 7132760

Claim:
A hybrid blade wind turbine apparatus, comprising: a helically twisted blade supported for rotation about an axis and having an outer diameter; a plurality of substantially straight airfoil blades fixed with the helically twisted blade and supported for rotation about the axis, the plurality of airfoil blades mounted outside the outer diameter of the helically twisted blade and defining a fixed spatial relationship with respect to each other; and a turbine mast having a longitudinal axis of rotation and rotatably supporting the helically twisted blade and the plurality of airfoil blades, wherein the helically twisted blade and the plurality of airfoil blades are both rotating in the same direction about the longitudinal axis of rotation in wind conditions while maintaining the fixed spatial relationship with respect to each other during the rotation, the helically twisted blade and the plurality of airfoil blades each independently harnessing the wind for driving the wind turbine apparatus the plurality of airfoil blades driving the wind turbine apparatus independently from the helically twisted blade when a leading edge of an airfoil blade is rotating in the opposite direction to the wind.