Door constructions

Claim 1

A DOOR AND SUPPORTING STRUCTURE COMBINATION, COMPRISING: A CURVED WALL FORMING PART OF THE FUSELAGE OF AN AIRCRAFT, SAID WALL HAVING AN EXTERIOR CONVEX SURFACE AND HAVING A RELATIVELY LOW PORTION LOCATED ADJACENT TO AN UNDERSIDE OF SAID FUSELAGE AND FORMED WITH A DOOR OPENING, A DOOR HAVING A CLOSED POSITION LOCATED IN AND SUBSTANTIALLY FILLING SAID OPENING, SAID DOOR ALSO HAVING AN OPEN POSITION LOCATED OUTSIDE OF SAID OPENING, GUIDE MEANS CARRIED IN PART BY SAID WALL AT SAID OPENING THEREOF AND IN PART BY SAID DOOR FOR GUIDING SAID DOOR FOR SHIFTING, SUBSTANTIALLY PLANAR DOWNWARD MOVEMENT FROM SAID CLOSED POSITION TO AN INTERMEDIATE POSITION BETWEEN SAID CLOSED AND OPEN POSITIONS, HINGED CARRIER MEANS CARRIED BY SAID WALL IN REGION OF SAID OPENING THEREOF, AND CONNECTING MEANS CARRIED IN PART BY SAID DOOR AND IN PART BY SAID HINGED CARRIER MEANS FOR CONNECTING SAID DOOR TO SAID HINGED CARRIER MEANS WHEN SAID DOOR HAS BEEN DISPLACED FROM SAID CLOSED POSITION TO SAID INTERMEDIATE POSITION, SAID HINGED CARRIER MEANS, WHEN SAID DOOR IS THUS CONNECTED THERETO BY SAID CONNECTING MEANS WHEN SAID DOOR REACHES SAID INTERMEDIATE POSITION, SUPPORTING SAID DOOR FOR SWINGING MOVEMENT TO SAID OPEN POSITION, SAID DOOR IN SAID OPEN POSITION BEING LOCATED CLOSELY ADJACENT TO SAID UNDER SIDE OF SAID FUSELAGE.