Abstract: The invention is related to an unified means for protection of vehicle operators against shock and vibration troubling influences arising from the bearing base of the seat. The seat suspension includes an articulated guiding mechanism, an air resilient element with supply main line (15), a seat support platform (1) and a bearing base (2). The guiding mechanism has two rigidly connected crossed linkages each consisting of a pair of two levers (3, 4). The air resilient element is arranged to interact with the platform (1) and the base (2) around a pair of hinges and to form an integral air-resilient-damping mechanism, including two chambers. An improvement is achieved by using a controller (16) of the nominal seat position arranged to disconnect of inflation and drainage while unloading the seat and a controller (13) of rigidity and relative damping arranged to connect the volume (V1) with volume (V2).