SEATS, BACKRESTS, LEGRESTS, HINGED, SPRUNG, ADJUSTABLE IN THE INCLINATION AND IN THE POWER GIVEN FROM THE SPRINGS OR THE SPRINGS OF ERGONOMIC SEATS, CHAIRS AND ARMCHAIRS

摘要

To facilitate the use, seats, chairs and armchairs can be equipped with cushions, records and reclining leg rest, articulated and springs. One can adjust the inclination and / or the spring effect by means of screws or strips. Using a locking device to secure the seat or the like in the desired position. In order to rapidly lower the seat, the backrest or leg rest, one may use a variable speed drive for engagement or disengagement of the power application point (the seat) and / or resistance springs.