Abstract: A composite structure comprising a substantially planar portion and a border arranged on the border of the substantially planar portion. A first linking zone is arranged at one end of the border along a first axis and a second linking zone is arranged at another end of the border along the first axis. The border further comprises a reinforcing zone connecting the first and second linking zones, in that the border has a profile transverse to the first axis that is substantially U-shaped opening on a side opposite the substantially planar portion and in that the border is reinforced by at least one rib substantially parallel to a second axis perpendicular to the first axis and included in the plane of the portion.

Abstract: A composite structure comprising a substantially planar portion and a border arranged on the border of the substantially planar portion. A first linking zone is arranged at one end of the border along a first axis and a second linking zone is arranged at another end of the border along the first axis. The border further comprises a reinforcing zone connecting the first and second linking zones, in that the border has a profile transverse to the first axis that is substantially U-shaped opening on a side opposite the substantially planar portion and in that the border is reinforced by at least one rib substantially parallel to a second axis perpendicular to the first axis and included in the plane of the portion.

Abstract: The invention relates to a headrest having two rods (2), at least one having a locking detents, a housing with two channels and two sets of bearings, each set comprising a top bearing and a bottom bearing. Each bearing set is mounted in a corresponding channel by fitting these bearings into receptacles. The bearings have openings in which the rod can slide and a locking device for locking the housing relative to the rods in a plurality of vertical positions. The device includes at least one locking projection movable relative to the housing between a locking position and an unlocking position. The two rods are part of a frame formed by a metal tube bent to take the general shape of an inverted U with the rods corresponding to the legs of the U.

Abstract: The invention relates to a headrest having two rods (2), at least one having a locking detents, a housing with two channels and two sets of bearings, each set comprising a top bearing and a bottom bearing. Each bearing set is mounted in a corresponding channel by fitting these bearings into receptacles The bearings have openings in which the rod can slide and a locking device for locking the housing relative to the rods in a plurality of vertical positions. The device includes at least one locking projection movable relative to the housing between a locking position and an unlocking position. The two rods are part of a frame formed by a metal tube bent to take the general shape of an inverted U with the rods corresponding to the legs of the U.