Collapsible seat

The folding seat (2) has a back (21) that is hinged so it can fold backwards when hinge locks are released, and a base (20) on legs (22) that slide outwards by means of rollers running in guide rails so that it is also at floor level. The seat can be mounted over a floor recess that it drops into, leaving a completely flat floor with no obstacles. The lockable hinges for the seat back consist of toothed wheels and pegs that can be released by a cable and button in the seat end.