Patent ID: 6979175
Filing Date: 2005-12-27
Classification: F03D,F05B,Y02E

Abstract:
1. A downstream wind turbine for converting wind energy into electrical energy, comprising: a generally vertical support tower; a yaw bearing attached to the support tower; a support frame having a top and a bottom, wherein the bottom of the support frame is operably linked to the yaw bearing such that the support frame is free to yaw about a horizontal axis; at least one swing arm having first and second opposite ends, the first opposite end is pivotally attached to the top of the support frame, wherein the at least one swing arm is free to swing at an angle perpendicular to the support frame; an elongated carry member pivotally attached to the second opposite end of the at least one swing arm, wherein the carry member is at least partly accommodated inside the support frame and is orientated at a perpendicular angle with respect to the support frame; and a wind driven energy conversion system for generating electricity from wind, the energy conversion system comprising an electric generator, a power shaft, a transmission system and a rotor head attached to at least two blades, wherein the energy conversion system is balanced on and firmly attached to the carry member so that the carry member is biased to maintain an approximately horizontal orientation with respect to the support frame and in response to wind incident on the blades proportionally swings downstream from the support frame.