US 12,258,125 B2
Lift system for aircraft
Sergey D. Barmichev, Chicago, IL (US); and Aaron J. Kutzmann, Chicago, IL (US)
Assigned to The Boeing Company, Chicago, IL (US)
Filed by The Boeing Company, Chicago, IL (US)
Filed on Jan. 26, 2022, as Appl. No. 17/584,583.
Prior Publication US 2023/0234708 A1, Jul. 27, 2023
Int. Cl. B64D 11/00 (2006.01); B64D 11/04 (2006.01)
CPC B64D 11/0007 (2013.01) [B64D 11/04 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A lift system for an aircraft, the lift system comprising:
a first galley cart;
a second galley cart;
a third galley cart;
a floor deck;
a frame that defines a first storage zone, a second storage zone, and a third storage zone that are stacked to form a continuous column, wherein a bottom end of the first storage zone is aligned with the floor deck, a top end of the second storage zone is aligned with the floor deck, and a bottom end of the third storage zone is aligned with a top end of the first storage zone;
a first lift configured to move the first galley cart from the first storage zone to the second storage zone, the first lift comprising:
a tray;
a nut attached to the tray; and
a screw jack threadedly engaged with the nut, wherein the screw jack extends along the first storage zone, the second storage zone, and the third storage zone; and
a second lift configured to move the second galley cart from the first storage zone to the third storage zone;
wherein any portion of the third galley cart being positioned in any portion of the first storage zone prevents the first galley cart from vacating the second storage zone and moving into the first storage zone and prevents the second galley cart from vacating the third storage zone and moving into the first storage zone.