Patent ID: 8864440
Filing Date: 2014-10-21
Classification: F03D,F05B,Y02E

Abstract:
1. Apparatus for utilizing wind force to drive a rotatable turbine drive output shaft, said apparatus comprising: a longitudinally extending wind sail having three generally identical vane members adjoined at a central portion and extending from said central portion spaced 120 degrees apart; a longitudinally extending turbine drive shaft; said central portion of said wind sail configured for receiving said turbine drive shaft for centrally mounting of said wind sail on said turbine drive shaft, said vane members merging to include said central portion therebetween; said vane members are adjoined to said central portion, each vane member having a convex rear surface defining air output holes and a concave front surface defining a plurality of grooves running in generally parallel horizontal lines pointing toward said turbine drive shaft and capturing impinging airflow, each groove including an air exit port located on each groove proximate said turbine drive shaft for exhausting said captured impinging airflow through each said vane and onto the concave front surface of a following vane, each air exit port being continuous with a corresponding air output hole defined by the convex rear surface, said vane members extending from said central portion in an identical manner such that in rotation when a first vane member presents a concave front surface to impinging wind, each of subsequent vane members likewise presents a concave front surface to impinging wind; and each said vane member extends from said central portion in a curved scimitar-like configuration.