Vdo Adolf Schindling Ag

Mannesmann Vdo Ag

Hans-Joachim Schroder

Reinhold Berberich

Klaus Rathmann

Heinz Allerdist

Gerhard Rossler

Rupert Janofske

A system for an electro-hydraulic pressure supply for a power-assist device in a motor vehicle in which, by a pump which is arranged in an oil-filled container and driven by an electric motor, the oil is conducted through an outlet opening to the power-assist device and returned from the power-assist device via a return opening into the container. A shaft of the electric motor is coupled with a shaft of the pump. In order to provide an arrangement for an electro-hydraulic pressure supply for power-assist devices which can be used also in small structural units, the shaft of the electric motor and the shaft of the pump are coupled in a central bearing.

System for an electro-hydraulic pressure supply for a power-assist

In a rain sensor, a sensor field is arranged between two windshield wiper blades which lie one above the other on a windshield. The sensor field is thus located outside of the field of view of the driver and is wiped by the lower windshield wiper blade. The sensor field is connected to an evaluation circuit arranged on a wiper motor by connecting lines which pass around the lower wiper blade.

Rain sensor

A moisture sensor has two spaced main electrodes which are arranged on the outer side of the windshield of a motor vehicle in a region which is passed over by the windshield wiper and are connected to an evaluation circuit for the determination of resistance as a function of a degree of moisture. In order to improve the precision of the measurement results supplied by the moisture sensor, an auxiliary electrode is arranged between the two main electrodes outside a region passed over by the wiper in order to determine a shunt resistance formed by residues on the windshield and/or in the region of a windshield gasket covering. The main electrodes and the auxiliary electrode lead to an evaluation circuit.

Moisture sensor for a windshield

A rain sensor having two non-contacting conductive paths which are aligned parallel to each other and are arranged on the windshield of a motor vehicle, with an evaluation electronics system connected to them. In order to create a rain sensor having the smallest possible dimensions, the width of at least one conductive path is made non-constant over its length.

A rain sensor which is arranged on the outside of the windshield of a motor vehicle in a region which can be passed over by a windshield wiper and has at least one conductive track which is connected to an electric potential within the motor vehicle. A loop resistance of the conductive track (1, 2) is measured for the electrical detection of a tear.

A system for the locking and/or unlocking of a security device, particularly an automobile locking device, comprising a transmitting device for transmitting coded data recording, a receiving device for receiving the coded data recording, a transmitter-end storage and a receiver-end storage for storing codes and a comparator for comparing the received data recording with the stored data recording, a control signal being adapted to be given off to the security device from the receiving device in the event that said data agree. The receiving device has a signal generator to produce several further coded data which are stored in the transmitting device and in the receiving device and can be employed upon the subsequent use of the system. The further coded data recording may be random number and/or algorithms for changing the random numbers. The production of the further coded data recording is effected preferably upon actuation of the ignition lock.

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Wiesbaden, Germany

Hans-Joachim Schroder