Petal type door for cargo aircraft

Claim 1

AN AFT DOOR STRUCTURE FOR A CARGO AIRCRAFT FUSELAGE COMPRISING: A PAIR OF DOOR ASSEMBLIES EACH HAVING AN UPPER AND LOWER DOOR PANEL PIVOTALLY CONNECTED TOGETHER AND EACH ASSEMBLY HAVING AN OPEN AND CLOSED POSITION, A FIRST ACTUATING MEANS FOR PIVOTING THE LOWER DOOR PANELS UPWARD AND INWARD RELATIVE TO ITS RELATED UPPER DOOR PANEL WHEREBY THE INNER SURFACES OF THE UPPER AND LOWER DOOR PANELS ARE CONFRONTING, SAID UPPER DOOR PANELS PIVOTALLY CONNECTED TO THE FUSELAGE, AND A SECOND ACTUATING MEANS MOVING THE DOOR ASSEMBLIES ABOUT THE PIVOTAL CONNECTIONS OF THE UPPER DOOR PANELS TO THE FUSELAGE, THE PIVOTAL CONNECTIONS BETWEEN THE UPPER DOOR PANELS AND THE FUSELAGE ARRANGED SO AS TO SWING THE AFT PORTIONS OF THE DOOR ASSEMBLIES AWAY FROM EACH OTHER IN AN OPENING DIRECTION AND TO BRING THE AFT PORTIONS OF THE DOOR ASSEMBLIES TOWARD EACH OTHER IN A CLOSING DIRECTION, THE MOVEMENT OF THE LOWER DOOR PANELS RELATIVE TO THE UPPER DOOR PANELS IN AN OPENING AND CLOSING DIRECTION CAPABLE OF OCCURRING CONCURRENTLY WHILE THE UPPER DOOR PANELS MOVE ABOUT THEIR PIVOTAL CONNECTIONS TO THE FUSELAGE IN AN OPENING OR CLOSING DIRECTION.