US Patent 7429085 Seat, particularly an air passenger seat

A seat, particularly an air passenger seat, includes a seat part and a backrest. The backrest has a backrest element (10) with an arched, one-piece frame part (12) having at least one hollow profile (14). In order for the frame part (12) to have, at least in part, at least one additional hollow profile (16) and for the adjoining hollow profiles (14, 16) to be situated one behind the other in the normal direction of movement (flying direction (18)) of the seat, the backrest element is reinforced in the relevant areas in such a manner that, even in the event of a crash, the base frame structure remains intact.