Itt Industries, Inc.

Swf Auto-electric Gmbh

Horst Rachner

Hans Prohaska

Horst Goertler

Herbert Erdelitsch

Walter Hecht

Gunther Gille

Helmut Betsch

Karl-Heinz Liedtke

Joachim Munz

Friedrich Hetzel

Alfred Kohler

Otto Machalitzky

Roland Buhler

Heiner Bayha

Wolfgang Spieth

Josef Swoboda

Hermann Kluge

Uwe Knobloch

Wolf Seitter

Hans Muller

Walter Bierent

Thomas Theurer

Anton Lill

Circuit arrangement for at least one electric load of a motor vehicle

Electric switch, especially steering column switch for motor vehicles

Steering column switch with indirectly guided bridging contacts

This invention relates to an electric switch, especially to a steering column switch. The switch comprises an insulation plate, a switch lever and a switching member, which are jointly swivellably mounted on the insulation plate in a swivelling plane extending perpendicular to a swivelling shaft and which are tiltable from this plane. In the swivelling plane, the lever and switching member can occupy several operating positions. The various operating positions are defined by a locking cam and a detent. One of these two elements is positioned on a locking lever. One end of said locking lever is swivellably mounted about a shaft parallel to the swivelling shaft of the switching member and the locking member is resiliently prestressed against the switching member. In order to prevent the switch lever and the switching member from shaking in the rest condition and to provide a smooth movement of the switch lever and switching member in a changeover between the operating positions, the switching member is guided in the swivelling plane by the switch lever. Thus, the guide can be maintained without an additional space requirement. Due to the guide, the switching member does not strike any other piece parts of the switch so that underside noise is also reduced.

Steering column switch

This invention relates to a steering column switch with two switch units arranged in superposed planes, which switch units each have a board with injection-moulded metal conductors and plug contacts the ends of which are rectangularly bent. The ends of the plug contacts of the switch unit which, in the plugging direction, is farther away from the connector, are positioned laterally of the ends of the other switch unit with a spacing from a conceived plane through the housing, which spacing is larger than the spacing of the ends of the plug contacts of the other switch unit from this plane. Thus a compact construction of the connection area of the switch is ensured.

Electric steering column switch for motor vehicles

In a steering column switch for motor vehicles a hazard-warning signal switch is clipped onto the printed circuit board of the turn-signal switch. The turn-signal switch is contacted at the upper side and the hazard-warning signal switch at the underside of the printed circuit board. The hazard-warning signal switch is compactly constructed and does not impede the movability of the other switch levers and switch slides of the steering column switch.

Steering column switch for motor vehicles

An system for the supply of fuel which acts as an electrolyte, including a metallic component part as a sacrificial anode for protection of metallic current leads against electrolytic corrosion. The component part is connected to the positive side of the operating circuit of the electric motor. In order to improve the protection of the current leads, the sacrificial anode is connected to a higher electric potential than the current lead for the positive side of the circuit.

System for supplying fuel including protection against electrolytic

In a circuit arrangement for a reversible electric motor for directly driving a windshield wiper the motor is operated at reduced rotational speed in predetermined angular ranges to ensure smooth starting and stopping in the reversing positions and an accurate parking position.

Windshield wiper speed control arrangement

A windshield wiper assembly comprising two windshield wipers each driven by a separate motor is described in which a control provides switching signals for switching on and off the wiper motors so as to achieve relatively smooth running of the wipers. In particular wiping areas one motor is continuously switched on and only the other motor, in dependence on the difference of the angular positions of the two wipers, is controlled such that collision of the wipers is prevented when the wiping areas overlap.

Windshield wiper control

In a so-called stop-start device for a motor vehicle engine particular consuming devices in the motor vehicle are changed over to a mode of operation with a lower current consumption, when the engine is switched off, or a switching-off of the engine is prevented, when functionally important consuming devices are switched on. Thus one achieves an appropriate compromise between saving of fuel and a satisfactory charge condition of the battery.

Stop-start device for a motor vehicle engine

A control circuit for a windshield wiper circuit provides for a depressed parking position by including a timing element which delays turn off of the motor for a time interval after the wiper reaches a position adjacent the parking position area.

Windshield wiper control circuit

A display system comprising at least one display element, for example in the form of a pivoted pointer for indication of a changing measured value in association with a scale. The display element is implemented by an electro-optical cell filled with a liquid, the cell having two transparent plates separated by a distance frame with an associated illuminating device at the back side. Portions of one of the transparent plates is rendered opaque, the remaining areas on that plate providing transparent windows. Transparent areas are also provided between the plates. One of said transparent areas has a contour corresponding with the contour of the scale. The other of said areas extends over a larger surface.

Display system

A control circuit for the turn-signal flasher system of an automotive vehicle. The flasher system includes a relay having switch contacts which are serially connected, together with a direction indicator switch, between the vehicle battery and the turn-signal lamps. A measuring or sampling resistor is connected between the battery and the relay contacts. First and second pulse generators are connected between a first voltage indicator and the relay coil, and are selectively gated to interrupt the relay during normal lamp load conditions. The first pulse generator provides a normal mark-to-space ratio whereas the second pulse generator provides a reduced mark-to-space ratio for use during night driving conditions. Third and fourth pulse generators are responsive to corresponding voltage indicators connected to the measuring resistor. The third and fourth generators function to respectively provide different mark-to-space ratios in response to, and indicative of, lamp outage or current-overload conditions.

Control circuit for vehicle turn-signal flasher systems

A safety control circuit for electric motors of power windows of automotive vehicles and which differentiates between a tight fitting of the window pane and an obstacle blockage. The motor current is selectively detected to provide a signal representative of the instantaneous rather than static current values. The detected signal is compared to a reference signal. When the detected signal exceeds the reference signal by a given value or longer than a predetermined interval, which indicates that an obstacle blockage has occurred, the motor current is switched off or reversed.

Circuit arrangement for power windows

A windshield wiper system having an electric motor for driving windshield wipers through repeating wiper cycles by reversing the direction of rotation of the motor through a reversing switch comprising a pair of relays which control the polarity of current applied to the motor. A limit switch is mechanically coupled to the motor for detecting the end positions of the motor and for providing signals indicative thereof. First and second time delay circuits each have an output respectively coupled to one of the relays, and each delay circuit has a pair of inputs coupled to the limit switch. Each delay circuit is activated to provide a delayed output to its relay by a respective end position signal which immediately deactivates the other delay circuit.

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Bietigheim-Bissingen, Germany

Horst Rachner