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Wind machine with reciprocating blade means

  • US 3,995,972 A
  • Filed: 07/07/1975
  • Issued: 12/07/1976
  • Est. Priority Date: 07/07/1975
  • Status: Expired due to Term
First Claim
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1. A reciprocating wind apparatus comprisinga support,a carrier guided for reciprocating movement on said support,at least one elongated blade having a longitudinally extending axis and a leading longitudinally extending edge for facing the wind, pivot means on said carrier pivotally mounting said blade for free turning by the wind about said longitudinal axis and relative to said carrier to present one side to the wind when driving said carrier in a first direction and to present the other side of said blade to the wind when driving said carrier in the opposite direction, a variable angle of attack of the blade being determined by the wind, means on said carrier limiting the maximum amount of turning of the blade by the wind about its longitudinal axis, andmeans associated with said support for turning said blade about its longitudinal axis to present its opposite side to the wind and to cause a reversal in the direction of carrier travel.

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