Stair and stairwell construction for connecting two decks in an aircraft
AssigneeDeutsche Aerospace Airbus GmbH
InventorsWilfried Sprenger, Ralf Schliwa, Hans-Juergen Mueller
Life of this patent
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Abstract
A stair and stairwell construction for interconnecting two different decks, especially in an aircraft, includes stair treads, stringers, and a stairwell enclosure or housing. At least one of the just enumerated components is constructed to be positionable or tiltable relative to the planes defined by the decks. One of these components is positionable into an open position, thereby providing a passageway, or into a closed position thereby blocking the passageway. In both positions, this positionable component is lockable.
Claims11
A stair and stairwell construction for connecting an upper deck and a lower deck through an opening in said upper deck, comprising stair treads, stringers, means securing said stair treads to said stringers to form said stair, a stairwell housing comprising a fixed housing component and at least one positionable housing component positionable relative to a deck surface of said upper deck, said stairwell construction further comprising locking means (13) for fixing said at least one positionable housing component in a first operational position permitting a passage through said stairwell housing on said stairs, said locking means (13) also maintaining said at least one positionable housing component in a second position for preventing such a passage when said positionable housing component is covering at least partly said opening in said upper deck, said at least one positionable housing component thereby increasing an available floor space of said upper deck when said opening is at least partly covered by said positionable housing component.
Dependencies are inferred from the claim text.