Patent ID: 8432056

Claim:
A shrouded vertical axis dual-turbine generator that operates when exposed to either a wind current or water current, comprising: a vertical structure in the shape of a symmetrical foil having two fixed cambers to house two turbines, one on each side of the foil; two vertical axis turbines that are mounted into two cambers of each side of the foil and are mechanically connected to one or multiple generators of electricity or to one or multiple pumps; and wherein the two cambers are concave and specifically shaped to leave more space between the turbine's blades tip and the wall on the rearward side of the camber, to create a high pressure zone, while leaving less space between the turbine's blades tip and the area of the camber at the forward side of the camber to create a low pressure area; said low and high pressure areas increase the turbine's efficiency by augmenting its rotating speed; and movable shutters capable of sliding inside guiding tracks to control the rotating speed of the turbines by increasing or decreasing the amount of air or water that flows over the turbines; said shutters are operated by an actuator connected to a flow meter that measures the speed of the wind or water current.