Abstract: An all wheel steering arrangement having a coupler lever mechanism between the front-wheel steering and rear-wheel steering. The transmission ratio between the steering angle of the front wheels and the steering angle of the rear wheels is controllable, the variation of the transmission ratio causing no steering deflections in the straight-ahead position of the steering. The steering angle of the rear wheels increases within a predeterminable range on both sides of the straight-ahead position with an increasing steering angle of the front wheels. As soon as a limit angle is reached, however, the steering angle of the rear wheels remains substantially constant, even when the steering angle of the front wheels increases further; and if appropriate, the steering angle of the rear wheels can even decrease somewhat.

Abstract: A parallel processing qualitative reasoning system uses a control processor and a plurality of server processors to evaluate a plurality of hypotheses simultaneously. The control processor provides hypotheses and user observations to the server processors and the server processors return evaluated hypotheses to the control processor. The server processors can be interrupted after a predetermined amount of time to return a partially evaluated hypothesis.

Abstract: A propfan engine having two oppositely rotating fan rotors both driven by a low-pressure turbine by way of a drive shaft includes a reversing transmission. The reversing transmission drives one fan rotor, while the other fan rotor is coupled directly to the drive shaft. This construction permits a favorable design of the rotational speeds of the fan rotors and of the turbine and, in comparison to a conventional transmission, requires less space and weight for both fan rotors.

Abstract: The present invention relates to an arrangement for holding and laying a multiplicity of jointly guided cables in an installation space of a motor vehicle, the cables connecting units being laid along a predetermined line having at least one curvature, and so as to cover a mounting space at least partially and being fixed releasably alone this line, the cables being mounted at the end points of the line so as to be swivellably movable freeing the mounting space lying below them.

Abstract: A venting arrangement for a cooling circuit of an internal combustion engine, having a vent line which connects a radiator to a top section of an expansion tank located at a higher level with regard to the top of the radiator. In order to avoid trapping of air inside the vent line, a vent valve in the form of a flap or diaphragm valve is installed at the highest point of the vent line, via which vent valve the trapped air can escape during travelling operation and during filling. By the arrangement of the vent valve inside the expansion tank, the cooling water expanding during running of the engine and discharging via the vent valve remains in the expansion tank.

Abstract: A remote-control system for closures with a movable hand transmitter with at least one transmission key, this transmitter generating and radiating directed coded control signals upon actuation of the transmission key of the hand transmitter. At least one first receiver unit is tuned to receive the control signals radiated from the hand transmitter and is arranged on a motor vehicle and triggers switching effects on a remotely controllable vehicle locking after the received control signals have been identified as acceptable. At least one second receiver unit is tuned to receive control signals radiated as a result of the actuation of the transmission key of the hand transmitter for remotely controlling a remotely controllable access control device external to the motor vehicle. This second receiver unit is arranged outside the motor vehicle and triggers switching effects on the access control device after the received control signals have been identified as acceptable.

Abstract: A receptacle arrangement for an air bag which protects a vehicle occupant from an impact onto parts of the vehicle interior, has a covering which is fixed to a base plate and covers an air bag container. The covering folds out along a hinge axis of a hinge in the edge region of the air bag container during the unfolding of the air bag, after which it exposes a container aperture for the passage of the bag fabric into an inflated position in front of the vehicle occupant. The covering has, in addition to the first hinge, two further hinges which bound the first hinge on both sides, are approximately perpendicular thereto and have a clearance from the lateral edges of the covering. Thereby, two lateral covering flaps are formed which subdivide the swivellable covering.

Abstract: An tape automated bonding feeder apparatus employs a vertical carrier extraction unit to successively supply electronic circuit components to an output station from which a component is seized for placement and attachment to a circuit board. The feeder apparatus, which may be mounted on a rollable cart, includes a generally rectilinear housing on a top plate of which one or more magazines are mounted. A magazine contains a stack of circuit component carriers. The bottom of the magazine has a carrier extraction unit which controllably allows an individual component carrier at the bottom of the stack to drop away onto an underlying carrier shuttle. The carrier shuttle is supported for movement betweeen the magazine and a lead forming unit. The lead forming unit detaches a component from the carrier and forms the leads of the excised component for mounting the component to a circuit board.

Abstract: An internal support plate is inserted on the backing plate of a coinless telephone station to reinforce a projection on the backing plate without any field modification of the station. The internal support plate has a projection which is sized and configured to mate with and thereby reinforce the projection on the backing plate.

Abstract: A digital to analog converter circuit for use at RF frequencies includes an input transimpedance buffer receiving an RF input. A complimentary switched R2R ladder network is coupled to the input buffer at one end and to an output transimpedance circuit at its other end. The output transimpedance circuit has an extremely low impedance and provides an RF output. The switched ladder network is formed of transistors and includes a complimentary switch to maintain current and voltage regardless of the transistor states. A bi-phase D/A converter uses a mirrored complimentary switched R2R ladder network coupled between a phase splitter and the output transimpedance circuit.

Abstract: A device for induction heating of the inside of cylinder liners of reciprocating-piston engines to a transformation temperature, for the purpose of hardening. An inductor head is equipper with an aligning device designed as a spreadable cage which is equipped on the outside with clamping bars, clamping bosses a clamping shells which can be applied free from play and under the effect of force against the inner surface of the cylinder liner. The inductor loop is also displaced radially and brought into the working position by means of these clamping shells. Heating and hardening is carried out only with the inductor head in the clamped and exactly aligned state, whereas, after the clamping shells and the inductor loops have been released, a further indexed movement of the inductor head is possible. The work is carried out at relatively high alternating-current frequencies in the range between 400 and 500 kHz and at relatively high energy densities in the range above 5 kw/cm.sup.2 .

Abstract: Device for controlling the pressure in a hydraulic pressure system in which the output of a constantly running pump which feeds pressure medium to a pressure system is controlled by means of a suction throttle valve which itself is actuated as a function of the pressure in the pressure system of the vacuum in the connection between pump and suction throttle valve.An over pressure in the pump output acts to close the throttle valve, while under vacuum in the pump outlet acts to open the throttle valve, thus allowing for a two point control without additional control valves.

Abstract: Apparatus and method for measuring the radiation power of a laser. Two partially transmitting mirrors are arranged in the main laser beam which, with respect to their orientation in space, are turned by 90.degree. with respect to one another and by which a portion of the radiation is coupled out, and the partial beam is directed to an electro optic transducer. The measuring arrangement is therefore independent of the polarization condition of the main laser beam.

Abstract: A vehicle and method for detecting the formation of ignitable mixtures in the closed spaces of the vehicle has at least one signal-generating sensor mounted in the closed spaces of the vehicle at a point at which, because of the physical characteristics of the fuel and because of the spatial conditions, harmful substances and/or gases collect first. The signals generated by the at least one sensor are processed in an electronic circuit which, as a function of the measured harmful-substance or gas concentration, actuated movable vehicle parts for closing and opening certain vehicle spaces.

Abstract: A method and arrangement for aligning a space vehicle with respect to a reference object is disclosed. A measuring direction is obtained by determining the angular orientation direction of the space vehicle with respect to the reference object and subsequently the space vehicle is aligned by means of actuators such that the measuring direction corresponds to a reference direction on the space vehicle. The actuators are driven by control signals which are derived from the measuring direction to cause control torques on the space vehicle. The orientation of the space vehicle and reference object is determined only with respect to a single measuring direction along a main axis of a direction sensor.

Abstract: An arrangement for controlling in a motor vehicle an electrohydraulically controlled, automatically shifting transmission driven by an internal-combustion engine. The transmission has several shifting programs optimized according to different design criteria which may be selected either manually by the driver or automatically. Using a temperature sensor, a cold-start condition of the motor vehicle is sensed on the basis of which a transmission control system shifts at least for a limited time period according to a warmup shifting program in such a manner that the internal-combustion engine, under identical driving conditions, generates higher exhaust gas mass flows or exhaust gas energy flows than for gear positions shifted according to a consumption-optimized shifting program.

Abstract: A restraining system for knee protection in a motor vehicle having a safety belt system includes an element which deforms plastically upon impact of a vehicle occupant's knees. The element can be transferred by means of a servo drive from a comfortable remote-from-the-knee position into a securable, restraining close-to-the-knee position. The restraining system permits the largest degree of freedom of movement for the vehicle occupant given specific peripheral conditions or prevents the vehicle occupants slipping away towards the foot space of the vehicle. The signal for transferring the knee protection into its close-to-the-knee position in the driving mode occurs by a device triggered in the event of the non-use of a three-point safety belt system.

Abstract: A sealing device has two circumferentially fixed sealing rings which, together with a common ring groove in a turbo-machine shaft for both sealing rings, result in a labyrinth seal between the sealing gas space and the lubricating-oil relief space and between the sealing gas space and the rotor disk space. In the event of a disturbance of the sealing gas supply, both sealing rings are supported at a gradation of a shaft lead-through bore which prevents a total wearing-out of the sealing rings.

Abstract: A device for measuring the radiation returned from a material treated by means of an optical radiation source can be inserted onto and removed from the beam path of the optical radiation source. An optical deflecting device guides the radiation of the optical radiaton source out of its beam path and subsequently guides it back onto the original beam path. The optical deflecting device has at least one element which reflects the radiation of the optical beam source and transmits the returned radiation, and a detector for detecting the returned radiaton being arranged behind the element.

Abstract: The invention relates to a flame-type heater plug for an air-compression fuel-injection internal-combustion engine, especially a direct-injection and superchargable internal-combustion engine. The heater plug includes a heater tube arranged in the course of a plug housing and protective tube and has an integrated first control coil at a level of passage orifices in the protective tube, heating coil and a second control coil arranged outside the protective tube at a side of the heating coil opposite the first control coil. A heater-tube portion which projects from the protective tube and is located in the flow path of the intake air in the suction pipe of the internal-combustion engine is provided in which the second control coil is arranged for further influencing the power of the heating oil.