Patent ID: 8342449

Claim:
A vertically movable passageway for a space in the ceiling region in an aircraft cabin, the passageway comprising: a passageway floor; and a displacement device comprising: a first guide element; a second guide element; and a vertical guide rail; wherein the displacement device is configured to variably set the height of the passageway floor between an upper position and a lower position; wherein at least one of the first guide element and the second guide element is firmly connected to the passageway floor; and wherein the first guide element is movable along the guide rail in a vertical direction, thereby moving the passageway floor in the vertical direction; wherein in the lower position a headroom (h 1 ) above the passageway floor is bigger than a second headroom (h 2 ) above a middle isle of the passenger cabin and below the passageway floor; and wherein in the upper position the first headroom (h 1 ) is smaller than the second headroom (h 2 ).