Shlesinger, Arkwright & Garvey LLP
Sail system for wind turbines
 A sail system for wind turbines of the vertical shaft type is disclosed. The sail system has a vertical rotating shaft, a plurality of support arms radially extending from an upper portion of the rotating shaft, and a sail pivoted to the tip of each support arm. The sail is provided with a longitudinal horizontal slit and is eccentrically pivoted to the tip of each support arm by means of a hinge. A holding rod is pivoted to an outside portion of the arm and penetrates the longitudinal slit of the sail. A spring is fitted over the holding rod between the spring stopper of the holding rod and the outer surface of the sail. The sail system not only prevents the sail from sagging due to the sail's weight, it also tightly pivots the sail to the arm regardless of the sail's configurations. The maximum turning angle of the sail relative to the arm is limited and adjusted by the spring. 
F F Y F F F
F05B F03D Y02E F05B F05B F05B
additional inventional additional additional additional additional
Jung Han
Chung