Abstract: Protection devices in motor vehicles typically have a movable element, for example a roll bar (1) or a flap, which, in the initial state, is fixed in its position by a releasable holding device. In the event of a hazard, the movable element can be released under sensor control by a common pyrotechnic actuator (11) and can be deployed with the protection being activated. The protection device also has a means (8, 9) for locking the deployed, movable element. A driving pressure chamber (12, 15), which is fixed on the bodywork and in which a driving piston (2 with 13, 16) connected to the movable element is accommodated in a guided manner, is connected downstream of the pyrotechnic actuator (11).

Abstract: A rollover protection system is provided for motor vehicles having at least one actively deployable rollover body (2), which in the normal operating state is kept in a rest position and which is deployable into a support position by a pyrotechnic actuator (6). In order to provide a rollover protection system, in which the pyrotechnic actuator (6) has a space saving, highly efficient, and economical arrangement, the protection system provides, among other things, that the rollover body (2) is deployable by the actuator (6) according to the principle of a rocket propulsion system.

Abstract: The invention is based on a rollover protection system for motor vehicles that is located behind a last row of seats having a part affixed to the vehicle, and a rollover body that is triggered by a sensor to deploy to a support position from a resting position. To save installation space and still provide the maximum survival area for all passengers of an open passenger vehicle, the invention provides installing a rollover protection system in the middle area behind the last row of seats.

Abstract: The invention is of a rollover-protection system for motor vehicles with at least one roll bar, which is received in a leading vehicle-mounted bracket by means of its bar shanks, and in its normal state, it is kept in a lower, non-obtrusive resting position by a holding device, with the sensor-driven releasing of the holding device, it can be brought into a locked, supporting position by a store of energy. With the use of a raw material made from one piece, an especially economical, highly efficient leading vehicle-mounted bracket that reinforces the body of the vehicle can be manufactured, which houses the deployable roll bar.