Abstract: A passenger vehicle restraint system that is capable of being placed in different positions, consisting of an interior defined by a housing and at least one airbag, at least one gas generator for delivering gas to the interior in order to inflate the airbag, at least one controllable outlet provided on the housing which may be closed by a closing element, such that an internal pressure in the interior may be adjusted according to parameters relevant to passenger load during an accident. A restraint system, which is easy to construct and can be manufactured cost-effectively, is provided by an adjustable stop element limiting the opening movement of the closing element, which is coupled to the vehicle seat such that the stop element is displaced according to parameters relevant to passenger load, in order to adjust the outlet cross section defined by the closing element located in its closed position.

Abstract: A belt tensioning unit has a reversible clamping device which is controlled by a sensor system which is capable of recognizing potentially dangerous or accident-prone driving situations. In the event of danger, the belt is tensioned with sufficient force in order to draw the occupant into a desired sitting position prior to a possible collision or to retain the occupant in this position.

Abstract: A backrest for a vehicle seat, having a head restraint and backrest padding, and having a supporting element which is intended for the seat occupant's back and, is compliant, at least in the upper backrest region, in such a manner that the seat occupant's back is able to shift rearwards relative to the head restraint in the event of a rear-end collision of the vehicle. The supporting element is formed by a shaped cushion that is integrated in the backrest padding in the upper backrest region, and filled with a gaseous medium, in particular air. In the event of a collision this supporting element can suddenly be deflated.