Patent ID: 8763954

Claim:
A structure in an aircraft with an axis of motion, for the support of occupants in occupant supports in multiple tiers, with an inherently high center of mass, said structure comprising a plurality of support means adapted to rigidly engage seat tracks at the floor of the aircraft and each of said support means adapted to attach to each other thereby enabled to transfer vertical forces to each other without substantially loading the seat tracks with said vertical forces, and said support means attached to at least one occupant support, said occupant support further comprising a cabin with a support structure, a seat bottom and a seat back and axes in the direction of the occupant, each occupant support supported by one or both of: at least one of said support means adapted to engage seat tracks at the floor of the aircraft; and an attachment means to at least one other occupant support, thereby said attachments enabling the structure to neutralize the torque generated by each occupant support therein, imposing a compressive load towards the front and a tensile load towards the back of the aircraft on each of the seat tracks, during impact conditions reducing the alternatively compressive and tensile loading on the seat tracks under impact conditions in a direction substantially along the axis of the aircraft.