US 3,987,987 A · Self-erecting windmill

Abstract

A device which lifts itself into the air and either itself carries a windmill for the extractions of power from the wind, or traverses a oscillatory path back and forth across the wind such that the action of the tethering lines for the device can be used to generate useful power such as electricity is disclosed. A series of airborne structures, an autogyro-helicopter, the paramill, and a sail plane are all disclosed as the self-erecting structures. Power is extracted either within the airborne structure, preferably by electric generators, or from the tethering lines through the use of certrifugal or other pumps, or electric generators. Stability and control of the self-erecting structure is accomplished via the use of servomotors or control lines directed from the energy extracting site through the tether to the erectable member.

Claims3

Dependent claims

A wind driven apparatus for the production of energy comprising:

means responsive to the motion of air for maintaining a stable airborne orientation, said orientation comprising periodic oscillations through the air and said airborne orientation maintained as a result of aerodynamic lift;
coupling means for linking said means responsive to the motion of air to a ground location, said coupling means movable in response to the oscillations of said means responsive to the motion of air;
and
means disposed at said ground location for converting the movements of said coupling means into usable energy.

1 more element

Dependencies are inferred from the claim text.

Self-erecting windmill

Life of this patent

Self-erecting windmill

Life of this patent

Abstract

Claims3