The invention relates to a vehicle seat having a seat part and a backrest part comprising a first backrest portion and a second backrest portion arranged above it in the seat height direction, wherein the second backrest portion is displaceable relative to the first backrest portion by means of a displacement movement directed at least in the seat width direction, wherein in a first displaced position of the second backrest portion a mechanical interaction is formed between the first backrest portion and the second backrest portion, which secures the first displaced position of the second backrest portion and which can be released by means of a force exerted on the second backrest portion and acting in the direction of the displacement movement.

A side extension device for a seat of a vehicle, may include a seat cushion frame for forming a framework, a cushion pad provided with a bolster formed on each of opposite sides thereof, and a seat cover for covering a surface of the cushion pad, wherein a plurality of slits is formed in the bolster of the cushion pad, and divided bolster parts are formed between the slits, wherein the divided bolster parts are successively inclined outward by contact pressure of side parts of hips of an occupant, so that the bolster spreads outward.

Described are passenger support assemblies for a passenger seat, including an expandable inner frame that attaches the passenger support assembly with a seat frame and an expansion mechanism that allows the expandable inner frame to change in width, and an outer frame that includes two side frame elements connected with the expandable inner frame and extending beyond the expandable inner frame, the outer frame configured to change in width in response to a change in width of the expandable inner frame. A diaphragm can held in tension by the two side frame elements of the outer frame to define a seating surface.

A convertible seating and dinette arrangement that includes moveable and adjustable first and second seats with each seat including a base, a seat bottom, and a backrest; and wherein each base is configured for pivotal movement to adjust between various modes. The convertible seating and dinette arrangement can include seats that are moveable and convertible to at least three different modes including a sofa mode, a recliner mode, a daybed mode, a dinette mode, an alternate dinette mode, and a chaise lounge mode.

A linkage extension system and method for holding an extendable portion of a seat in a desired position while the extendable portion translates from a retracted to an extended position and any intermediate position. A coupled damper produces a holding force to counter gravity or other forces which cause the translation of the seat extension away from a desired position. The linkage extension system is self-powered and operates within the enclosed portion of the seat.

A linkage extension system and method for holding an extendable portion of a seat in a desired position while the extendable portion translates from a retracted to an extended position and any intermediate position. A coupled damper produces a holding force to counter gravity or other forces which cause the translation of the seat extension away from a desired position. The linkage extension system is self-powered and operates within the enclosed portion of the seat.

An aircraft seat set is provided that allows for providing extra room for passengers and/or allow for selectively increasing the width of an aircraft aisle during enplaning and deplaning and/or increasing the width of some seats during flight. In one embodiment, the aisle seat of the seat set is movably connected to the seat frame of the seat set to allow the aisle seat to be disposed above and in front of the middle seat of the seat set for enplaning and deplaning.

There is provided a vehicle seat that includes: a waist movement suppressing member that is disposed at a seat front side and a seat upper side of a seat cushion, and that extends in a seat width direction; movable members that support both end portions of the waist movement suppressing member movably in a seat vertical direction; urging members that urge the movable members toward a seat upper side; raising mechanisms that, at a time of sudden braking or at a time a collision is predicted, move the waist movement suppressing member toward the seat upper side; and stoppers that limit movement, toward a seat lower side, of the waist movement suppressing member that has been moved toward the seat upper side by the raising mechanisms.

A child safety seat includes a backrest portion, a headrest slidably connected with the backrest portion, a side support connected with the backrest portion and protruding forward from the backrest portion one side thereof, the side support being configured to be slidable transversally relative to the backrest portion, and a linking mechanism adapted to movably link the side support to the headrest so that the headrest and the side support are movable concurrently relative to the backrest portion for adjustment. The linking mechanism includes a rod portion slidably carried with one of the headrest and the side support, and a ramped slot provided on the other one of the headrest and the side support, the rod portion being slidably connected with the ramped slot and movable relative to the one of the headrest and the side support.

Proposed is an actuator for a recliner which can be manufactured with components having simple structures to reduce weight, and functions of a seat operated through different cables are independently performed stably. The actuator for a recliner includes: a casing part, and a drive part provided with a worm wheel gear located inside the casing part and rotated by an operation of a motor, and a rack gear configured to move elastically toward a first or second side of the drive part in engagement with the worm wheel gear, with cables being coupled respectively to the first and second sides of the rack gear.