Abstract: An aircraft seat, which is convertible into a bed, is divided from adjacent seats by partitions 2 and has a movable squab 11, a movable leg rest 12, a fixed foot rest 14 and a movable backrest 15 to which a headrest 17 is pivotally connected. A control panel 21 is provided on a partition 2 for controlling the disposition of the seat. The seat has front legs 29 and rear legs 28 pivoted to aircraft deck 27 and is actuated by slide actuator 29 and recline actuator 30 (which extends or retracts rear legs 28). In the normally sitting up position of the seat, the squab back is held towards cabin wall 48 with a slide actuator 29 and a recline actuator 30 extended. When the seat is partially reclined the headrest 17 is pivoted forward to lie at an obtuse angle with respect to the front face of backrest 15 to keep headrest 17 clear of cabin wall 48. In the fully reclined position of the seat, the headrest 17 is lowered into recess 51 in shelving 52 at the rear of the seat unit along cabin wall 48.

Abstract: Composite sheet material comprises a core (12) formed from cellular material having a respective skin of continuous sheet material on each side thereof. Both the core and the skins are formed of thermoplastic materials and the skins are attached to the core by a thermoplastic adhesive having a fusion temperature less than that of both the core and the skins.