Kite-type aircraft

Claim 1

A KITE DEVICE COMPRISING A FRAME, SAID FRAME COMPRISING A LONGITUDINAL MAIN FRAME MEMBER, A FORWARD CROSS MEMBER SECURED AT RIGHT ANGLES TO THE LONGITUDINAL MEMBER INTERMEDIATE ITS ENDS, AND A REAR FRAME MEMBER SECURED AT RIGHT ANGLES TO THE LONGITUDINAL MEMBER NEAR THE REAR END THEREOF; SAIL MEANS SECURED ACROSS THE FRAME AND COMPRISING A GENERALLY DIAMOND-SHAPED FLAT CENTRAL SAIL PORTION HAVING ITS FOUR APICES ATTACHED TO THE RESPECTIVE ENDS OF SAID LONGITUDINAL MEMBER AND SAID FORWARD CROSS MEMBER; A FIRST, INNER PAIR OF PART-CONICAL, SIDE SAIL PORTIONS ADAPTED AND ARRANGED TO BE DOWNWARDLY CONCAVE IN OPERATION HAVING THEIR CONE APICES SUBSTANTIALLY COINCIDENT WITH THE ENDS OF THE FORWARD CROSS MEMBER AND HAVING INBOARD EDGES COEXTENSIVE WITH THE REAR SIDES OF SAID CENTRAL SAIL PORTION AND HAVING THEIR ARCUATE REAR EDGES ATTACHED TO SAID REAR CROSS MEMBER; AND A SECOND, OUTER PAIR OF PART-CONICAL, DOWNWARDLYCONCAVE SIDE SAIL PORTIONS ADAPTED AND ARRANGED TO BE DOWNWARDLY CONCAVE IN OPERATION HAVING THEIR CONE APICES SUBSTANTIALLY COINCIDENT WITH THE ENDS OF THE FORWARD CROSS MEMBER AND HAVING INBOARD EDGES COEXTENSIVE WITH THE OUTBOARD EDGES OF SAID INNER SIDE SAIL PORTIONS AND HAVING THEIR ARCUATE REAR EDGES ATTACHED TO SAID REAR CROSS MEMBER, IN A PLANE UPWARDLY OFFSET FROM THE PLANE OF SAID FLAT CENTRAL SAIL PORTION AND EDGES OF THE INNER SIDE SAIL PORTIONS, AN UNDERCARRIAGE SECURED TO SAID FRAME MEMBERS BELOW SAID SAIL MEANS AND ACCOMMODATING A FLYER, AND MEANS FOR ATTACHING A TOW LINE TO SAID UNDERCARRIAGE.