Telescoping loading and unloading structure for aircraft

Claim 1

IN A LOADING AND UNLOADING STRUCTURE FOR VEHICLES, THE COMBINATION OF: (A) AN EXTENSIBLE AND CONTRACTIBLE PASSAGEWAY HAVING INNER AND OUTER ENDS AND COMPRISING AT LEAST TWO TELESCOPICALLY CONNECTED SECTIONS PROGRESSIVELY INCREASING IN CROSS-SECTIONAL DIMENSIONS FROM SAID INNER END OF SAID PASSAGEWAY TO SAID OUTER END THEREOF SO THAT EACH SECTION INWARDLY OF THE OUTERMOST IS TELESCOPED INTO THE ADJACENT SECTION OUTWARDLY THEREOF; (B) MEANS SUPPORTING SAID INNER END OF SAID PASSAGEWAY FOR HORIZONTAL SWINGING MOVEMENT OF SAID PASSAGEWAY ABOUT AN UPRIGHT AXIS; (C) A WHEELED, STEERABLE, GROUND-ENGAGING SUPPORTING STRUCTURE FOR SAID OUTER END OF SAID PASSAGEWAY CONNECTED TO SAID OUTERMOST OF SAID TELESCOPLICALLY CONNECTED SECTIONS OF SAID PASSAGEWAY AND ADAPTED TO EXTEND OR CONTRACT SAID TELESCOPICALLY CONNECTED SECTIONS OF SAID PASSAGEWAY RELATIVE TO EACH OTHER; (D) STEERING MEANS CONNECTED TO SAID SUPPORTING STRUCTURE FOR STEERING SAME; NE) PROPELLING MEANS CONNECTED TO SAID SUPPORTING STRUCTURE FOR PROPELLING SAME; AND (F) SAID SUPPORTING STRUCTURE BEING CONNECTED TO A PORTION OF SAID OUTERMOST OF SAID TELESCOPICALLY CONNECTED SECTIONS OF SAID PASSAGEWAY WHICH IS SPACED INWARDLY FROM THE OUTER END OF SAID OUTERMOST SECTION AND WHICH IS TELESCOPED OVER THE ADJACENT SECTION INWARDLY THEREOF WHEN SAID SECTIONS ARE COMPLETELY CONTRACTED RELATIVE TO EACH OTHER.