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US 7,048,232 B1Granted
Plottner rotor kite
OwnerJarl Vernon Plottnerinventor
Life of this patent
Estimating the term…
Abstract
A Rotor Kite that is flown by means of two control lines and which has two counter rotating 50 inch rotors and which can be flown in winds of 9 miles per hour and greater. This Rotor Kite can take off, fly in the air at various heights and then be landed by the operator on its rear legs with no harm to the spinning rotors. Manipulation of the Rotor Kite in the air is possible at all times as the two major merits of this invention are its fly ability and its control ability.
Claims3
A rotor kite comprising:
- a base portion that supports two control bars that extend forwardly of the base and are connected to two control lines of the rotor kite for maximum control in both light and heavy winds;
- said base portion further supports two counter rotating rotors on a single mast that extends vertically from said base portion and produces a maximum lift to allow said rotor kite to be launched from a sitting position on the ground;
- said base portion further supports two light weight legs whose ends are spaced laterally and to the rear of said base portion such that the rotor kite can sit on the ground and be ready for takeoff with said rotors spinning in their vertical position with little worry of said counter rotating rotors hitting the ground and causing damage;
- and wherein the front ends of said control bars where the two control lines are attached are positioned forward of both a center of gravity of the rotor kite and a center of pressure of the counter rotating rotors and said light weight legs are positioned rearward of both a center of gravity of the rotor kite and a center of pressure of the counter rotating rotors for enhanced stability and control.
1 more element
Dependencies are inferred from the claim text.