Abstract: A control device of a protective means for rollover protection for a motor vehicle includes a rotational acceleration sensor for the rotational acceleration about the longitudinal axis of the vehicle (rolling motion of the vehicle) and an analyzer device for analyzing the rotational acceleration (angular acceleration). A signal that depends on the rotational acceleration is output by the analyzer device for the protective means for rollover protection.

Abstract: A circuit configuration for an anti-lock brake system, including a master cylinder (1) with a travel switch (27, 27') and an electromotively (31, 31') driven hydraulic pump (32, 32'), disposes of a "pump control" (45) which switches on the drive motor (31, 31') of the hydraulic pump (32, 32') in dependence on the vehicle deceleration and on the pressure fluid requirement during an anti-lock controlled braking operation, or on corresponding criteria and test results.

Abstract: There is suggested a circuit configuration for an electronically controlled anti-lock brake system, wherein upon the commencement of braking pressure control pressure fluid is pumped out of a supply reservoir (13) into the pressure chambers 7, 8) of the tandem master cylinder (1) which closes the inlet valves (14 to 17) of all wheels at the onset of the control action. It regulates the braking pressure on the imminently locking wheels by opening and closing the inlet valves and outlet valves (14 to 17 and 22 to 25) in a known fashion, while on the non-locking wheels it slowly adapts the braking pressure to the pressure prevailing in the tandem master cylinder (1) by way of pulsewise actuation at a predefinable pulse-pause ratio, that means opening and closing of the inlet valves (14 to 17).