An articulation mechanism for coupling a pivoting backrest to a traveling seat pan frame includes a first link having a first end section attachable to a pivoting backrest, and a second end section connected to the first end section, the second end section having multiple holes. A second link has a first end section and a second end section connected together, the first end section of the second link having at least one hole aligned with one of the multiple holes of the second section of the first link, the second end section of the second link is pivotally attachable to a seat pan frame. A fastener pivotally attaches the second link to the first link via the at least one hole of the second link and the selected aligned one of the multiple holes of the second end section of the first link based on a hole combination chosen to achieve a predetermined ratio of backrest recline to seat pan travel.

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 vehicle seat (10, 100, 200, 300, 400) includes a seat base (14,114, 214, 314, 414) a backrest (12, 112, 212, 312, 412) with a seat base and backrest pivot connection between the seat base and the backrest. An armrest (16, 216, 216, 316, 416) is connected to the vehicle seat at an armrest to vehicle seat support connection (20,120, 220, 320, 420). An armrest linkage system changes an inclination of the armrest relative to the backrest upon changes in inclination of the backrest relative to the seat base, over a pivot range of motion of the backrest relative to the seat base. This may maintain the inclination of the armrest relative to the seat base and the seat floor or may change the inclination of the armrest relative to the seat base and the seat floor.

A vehicle seat includes a cushion, a seatback connected to the cushion and a track arrangement. The track arrangement includes a curved fixed track and a flexible track follower that is moveable along the curved fixed track between a full slouch and a full upright position. The curved fixed track is connected to a vehicle seat support base and the moveable track is connected to the cushion.

An aerial workstation which comprises a seat having a sitting portion, a backrest that is connected by a first articulation that allows the backrest to pivot relative to the sitting portion, and an arm configured to position the seat in various positions and orientations in space as required. The aerial workstation makes it possible to be able to translate the seat in a cockpit in an introduction direction, and to make it pivot about a pivot axis that coincides with the direction of introduction within the cockpit.

A reclining cushion assembly for a seat includes a fixed portion and a movable portion mounted to the fixed portion. The movable portion is movable between an upright position and a reclined position. At least one reclining and locking mechanism is mounted to the fixed portion. The at least one reclining and locking mechanism is movable between a first position and a second position. The at least one reclining and locking mechanism is operable to engage the movable portion to transform the movable portion from the upright position to the reclined position.

An articulation mechanism for coupling a pivoting backrest to a traveling seat pan frame includes a first link having a first end section attachable to a pivoting backrest, and a second end section connected to the first end section, the second end section having multiple holes. A second link has a first end section and a second end section connected together, the first end section of the second link having at least one hole aligned with one of the multiple holes of the second section of the first link, the second end section of the second link is pivotally attachable to a seat pan frame. A fastener pivotally attaches the second link to the first link via the at least one hole of the second link and the selected aligned one of the multiple holes of the second end section of the first link based on a hole combination chosen to achieve a predetermined ratio of backrest recline to seat pan travel.

Seats and seat assemblies, such as for installation into aircraft, are described herein. In some embodiments, a seat assembly can include a framework configured to be mounted within an aircraft and a plurality of seats coupled to the framework. Each seat can include (a) a seat pan slidably coupled to the framework and (b) a seat back pivotally coupled to the framework and rotatable between an upright position and a reclined position. In some embodiments, the seat back is operably coupled to the seat pan such that movement of the seat back from the upright position to the reclined position moves the seat pan away from seat back to increase the effective recline of the seat.

A seating assembly is provided that includes a seatback movable into a pitched position along a track. A first cam is engageable with a release lever of the track. A second cam is engageable with a bypass cam that is raised over a stop as the seatback moves to the pitched position. An intermediate lock is engageable with a pin positioned on a middle support arm of the seat base when the seatback is in the pitched position.

A seat system for a passenger aircraft. The seat system includes a passenger seat frame having at least one pair of generally parallel spar tubes laterally positioned across the passenger seat frame and an articulating seat pan assembly. In one embodiment, the articulation seat pan assembly includes at least two pairs of opposed crescent-shaped seat pan roller assemblies attached to the spar tubes and a seat pan adapted to be mounted onto the pairs of opposed seat pan roller assemblies whereby the seat pan articulates along the seat pan rollers from back to front of the passenger seat frame. The seat system may further include a seat back tray table attached to the back of the passenger seat.