Patent ID: 7993096
Filing Date: 2011-08-09
Classification: F03D,F05B,Y02E

Abstract:
1. A wind turbine, comprising: a plurality of airfoils each having first and second ends and leading and trailing edges, the airfoils each pivotally secured on their first end to first spoke arms extending from a first hub and each airfoil pivotally secured on their second ends to second spoke arms extending from a second hub, the first and second arms both secured to leading edge points along the airfoil first and second ends respectively adjacent the leading edges thereof so that the airfoils pivot there about, and the first and second hubs secured to opposite ends of a central drive shaft so that the airfoils, first and second arms and first and second hubs form a carousel having an axis of rotation defined by the central shaft, a trailing edge hub having a plurality of trailing edge arms each pivotally secured to the first ends of an airfoil at a point thereon displaced from the upper spoke arm leading edge point of attachment towards the trailing edge thereof, an adjustment mechanism for moving a central axis of the trailing edge hub with respect to the axis of rotation of the carousel during rotation of the carousel so that rotation thereof results in motion of the airfoils to maximize lift as the airfoils rotate both in an upwind direction and in a downwind direction.