Seat-supported stowable tray table provided with a hinged stand

A seat-supported tray table assembly for movable attachment to a seat (12), in particular of a public transportation vehicle, consists of a tray table (14) provided with rotation bearing means for pivotal movement of the tray table (14) relative to the seat (12) about a first rotation axis (X1) in a first rotation direction (D1) from a stowed position to a deployed position relative to the seat (12), wherein the tray table (14) is provided with a flat upper face (18) and a hinged stand (28) hinged to the tray table (14) for movement relative to the tray table (14) about a second rotation axis (X2) parallel to the first rotation axis (X1) in a second rotation direction (D2) opposed to the first rotation direction (D1) from a recessed position in which the hinged stand (28) is received in an upper recess (26) formed on the tray table to a protruding position. The hinged stand (28) in the recessed position is flush with the flat upper face (18) of the tray table to form a planar upper surface. The hinged stand (28) has a free edge (32) that forms a contact surface for an inclined item (34) supported on the flat upper face (18) of the tray table (14) when the tray table (14) is in the deployed position and the hinged stand (28) is in the protruding position.