Abstract: A two-circuit brake system for motor vehicles with a shiftable master brake cylinder which includes two pressure spaces for the two brake circuits, of which the pressure space for the front axle brake circuit has a larger cross section than the pressure space for the rear axle brake circuit and which are connected with each other by a line extending externally of the master brake cylinder, whereby a shifting valve operating in dependence on the vehicle load is arranged in this line which is able to establish and interrupt the connection between the two pressure spaces; an intermediate piston is arranged between the two pressure spaces in the master brake cylinder coaxial to the two pressure pistons, which is freely movable within a guide sleeve of smaller diameter and is provided with central extensions on both sides thereof for the mechanical cooperation with the two pressure pistons; the shifting valve is thereby adapted to be shifted as a function of the load, of the pressure prevailing in the brake cylind

Abstract: A distance-warning system in motor vehicles which is equipped with measuring and evaluating devices for determining the distance of the vehicle with respect to an obstacle disposed in front thereof and for determining the approach velocity to this obstacle; the brake deceleration which is required for avoiding a collision is obtained by means of a computer from the values determined by the measuring and evaluating devices; the brake deceleration thus determined is then reproduced as a desired value indication on a scale having deceleration values marked thereon.

Abstract: A master brake cylinder for two-circuit brake systems of motor vehicles which includes two cylinders and pistons for the two brake circuits arranged one behind the other in a tandem arrangement; the piston for the front axle brake circuit thereby has a larger diameter than the piston for the rear axle brake circuit while the pressure space for the front axle brake circuit is connected with that of the rear axle brake circuit by way of a line in which a control valve is arranged that is controlled in dependence on the vehicle load.

Abstract: An installation for controlling a measuring beam and/or a light beam in motor vehicles, in which at least one measuring and/or light beam transmitted from the vehicle serves for measuring the distance or illuminating objects which are located ahead of the vehicle in its own lane; measuring devices are thereby arranged in the motor vehicle which determine at least the vehicle velocity and the transverse acceleration as well as possibly the longitudinal acceleration or deceleration for correcting the assumed theoretical braking action and, under certain circumstances, still other relevant vehicle magnitudes; the beam transmitter is then controllable as regards the beam range and/or beam opening angle and/or angle deviation of the beam with respect to the vehicle longitudinal axis by a computer as a function of these measured values.

Abstract: A servo-steering system for vehicles, especially for motor vehicles, in which the steering lever is displaced by means of a steering nut movable on a steering spindle, and in which adjusting devices are coordinated to the steering nut which are acted upon by a pressure medium whose pressure is controllable by means of control elements as a function of the deflection of the steering nut; a high pressure accumulator thereby serves as pressure medium source whereby the inflow of the pressure medium to the spaces containing the working pressure at the control element is completely interrupted in the normal rest position of the steering nut.

Abstract: Apparatus for controlling a two-circuit brake system for motor vehicles with the aid of a controllable pressure reducing valve which reduces the pressure in the rear wheel brake circuit compared to that in the front wheel brake circuit and which includes a by-pass line between the pressure inlet from the master cylinder and the pressure connection to the rear wheel brakes which is controllable by a solenoid valve; the brake slippage at the front and at the rear wheels is thereby measured, the thus-obtained values are compared with each other, and the solenoid valve is then controlled by a pulse sequence as long as the brake slippage at the front wheels is larger by a predetermined value than that at the rear wheels.

Abstract: A frequency transmitter combined with a differential gear for the transmission of signals to control the slippage of wheels of motor vehicles, which consists of a rotating toothed ring member secured at the circumference of each output shaft of the differential gear, cooperating with a stationary toothed disc that is arranged in the bearing cover of the differential gear between the bearing for the spur bevel gear and a retaining ring or the like providing a seal with respect to the outside.

Abstract: A brake force control system for vehicles, especially for motor vehicles in which one or several electrical signals dependent on the wheel acceleration are compared with predetermined threshold values and in which the resultant electrical signals are utilized for the control of actuating elements such as solenoid valves in the brake circuit, whereby the electrical acceleration signals are weighted in a manner known as such and this weighting is adapted to be influenced or even discontinued when exceeding the threshold value and/or in dependence on the polarity of the acceleration signal.