Seating system and a passenger accommodation unit for a vehicle

A recliner seat assembly for a passenger vehicle comprising:

• a fixed supporting portion adapted for supporting the assembly off a floor of the vehicle, a reclinable seat portion comprising a seat-pan and a back-rest, and a seat connecting device adapted for connecting said seat portion to said supporting portion, said connecting device including a seat reclining mechanism adapted for allowing and controlling translational movement of said seat portion relative to the supporting portion between a first, upright position and a second, fully reclined position and a selectively operable, bi-directional motor adapted for driving said seat portion between said first and second positions;
• wherein said seat reclining mechanism comprises a guiding device for reclining said back-rest progressively rearwardly relative to the supporting portion as the seat portion is moved from the first upright position to the second fully reclined position, and said motor is connected to the seat portion by a non-reversible linear actuator wherein said linear actuator comprises a linear screw coupled to the motor and anchored at both ends thereof relative to the fixed supporting portion and further including a screw engaging device disposed on the linear screw and coupled to the seat portion, so that travel of the screw engaging device along the linear screw causes the seat portion to travel relative to the fixed supporting portion.