A programmable and periodic legroom space enhancer for airline passenger seating, comprising:
- a base assembly fixed to a floor of a passenger aircraft cabin with a bottom portion consisting of a housing body having a hydraulic sliding mechanism built into the housing body and a base cover, the hydraulic sliding mechanism connected to at least a pair of legs of a seat row of airline passenger seats that are arranged in a row, where the row of seats is configured to move in fore and aft directions with respect to another row of seats;
- a pair of guide bars mounted to an inside of the housing body of the bottom portion and the pair of guide bars being rigidly fixed at two ends of the pair of guide bars and in a middle of a length of the pair of guide bars;
- a seat-mover assembly incorporated inside the housing body of the bottom portion and includes a double acting hydraulic cylinder and a U-bracket connected to a piston of the double acting hydraulic cylinder and the U-bracket positioned in an inverted U-position in relation with the piston of the double acting hydraulic cylinder;
- the U-bracket having two pairs of guide bushes that slide on the pair of mounted guide bars and the U-bracket having provisions for mounting the pair of legs of the row of seats and the seat-mover assembly is configured to move the seats in fore and aft directions;
- a pair of channels with hydraulic pipe lines and electronic conduits are disposed along either of a pair of longitudinal sides of the housing body of the bottom portion;
- sliding steel belts provided and configured to cover slots on the base cover when the slots get exposed during the movement of the seat rows;
- a pair of movable safety guide-bars situated on either side of the double acting hydraulic cylinder and adjacent to the double acting hydraulic cylinder and in contact with the U-bracket, configured to extend into and away from the base assembly to act as a mechanical safety interlock between two adjacently situated sliding U-brackets;
- a centrally situated combined panel having an electronic programming and display unit at a top portion of the panel and a main hydraulic control and monitoring unit at a bottom portion of the panel and a master control unit in a pilot cabin and a connecting electrical wiring;
- a hydraulic reservoir, a hydraulic pump, a hydraulic control valve unit and hydraulic pipelines for operating the double acting hydraulic cylinder;
- and
- an overhead digital display unit mounted over each airline seat row electrically connected to the centrally situated combined panel to display to seated passengers a current situation of the seated passengers' particular seat row at any given time.