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6850821 |
Control system for a wind power plant
A control system for a wind power plant that includes a damage module and a control module. The damage module compares existing stress conditions on one or more component parts of the wind power...
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5215483 |
High speed sea train
A vessel for pleasure or cargo transportation in which the vessel is born by a special flotation method comprising a plurality of circular floats that are designed to be rotated at high speed in...
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5076185 |
Tangs cycleboard
Surf board has multiple functions to serve as the sail boat, surf board, wind surf board, canoe and the rest seat on water. It comprises a foldable revolving sail, water wings, single sided pedals,...
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4803938 |
Rotor powered sailboat
A boat that is powered by an autogyro rotor is disclosed. A boat hull having a stern mounted rudder is provided with a selectively rotatable boom, preferably mounted in proximity to the rudder at...
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4602584 |
Propulsion device for a ship
A propulsion system for a vessel comprises a conventional screw and rudder arrangement and includes one or more rotor sails in the form of an elliptical cylinder upstanding from the deck of the...
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4582013 |
Self-adjusting wind power machine
A machine for economical recovery of wind power employs a self-adjusting mass-balanced aerodynamic blade weathervaning freely around a lengthwise pitching axis forward of its aerodynamic center,...
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4401284 |
Collapsible magnus-effect rotor
A lift-producing arrangement suitable for driving a boat by the Magnus effect comprises an elongate tubular envelope mounted for rotation about its longitudinal axis. A drive is provided to rotate...
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4116151 |
Wind powered apparatus
A wind-powered apparatus includes a series of vertically extending transversely curved foils carried in a support and movable longitudinally of the support from a furled condition, where the foils...
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