Abstract: A device for detecting the installation of a child seat, in particular on a vehicle seat, includes one fixed part and one movable mechanism. The fixed part has a switch element with two switching states and a device for forming an actuating field for the switch element. The movable mechanism is movable, as a result of the installation of the child seat, from a first position to a second position, thereby making a variation in the actuating field attainable, so that the switch element changes the switching state.

Abstract: A device is disclosed for detecting the installation of a child seat, in particular on a vehicle seat, furnished with one fixed part and one movable mechanism, in which the fixed part has a switch element with two switching states and means for forming an actuating field for the switch element, and the movable mechanism is movable, as a result of the installation of a child seat, from a first position to a second position, thereby making a variation in the actuating field attainable, so that the switch element changes its switching state.

Abstract: A sensor arrangement for determination of at least one of a position and an acceleration of a moveable body has a housing fixedly connected with the moveable body, an inertia body accommodated in the housing, a detector arranged in the housing for detecting a horizontal displacement of the inertia body, the housing having a base plate on which the detector is arranged so that determination of a vertical displacement of the inertia body is also performed.

Abstract: The electrical switching apparatus includes a housing (10), a coil (20) arranged in the housing (10), at least two switch terminals (35,50,60) arranged in the housing (10), a magnetic angle piece (30) in the housing (10) including a core (32) for the coil (20) and an armature (42) resiliently mounted on the magnetic angle piece (30) for making electrical contact between two switch terminals (35,50,60).

Abstract: A sensor for automatically triggering safety devices in motor vehicles, the sensor has a housing having a housing recess with a base and a tilting body located in the housing recess, the tilting body serving as a seismic mass and triggering a control signal when a predetermined threshold value is exceeded, the tilting body having an edge and a base. The base of the housing recess is provided with knobs at least in the region of the edge of the tilting body. The base of the tilting body is flat at least in the region of the knobs.

Abstract: A process for preparing halogenated indigo by reacting indigo with bromine and/or chlorine in the presence or absence of iodine as catalyst comprises using thionyl chloride as reaction medium.

Abstract: A process for the preparation of purified indigo comprises extracting the aqueous alkaline indoxylate solution arising from the synthesis with an inert water-insoluble solvent in the absence of oxygen before oxidizing the indoxylate solution to give indigo.

Abstract: A pressure sensor for determining air pressure in an interior of a motor vehicle tire has a housing for extending into a recess formed in a rim wall of the tire, and an annular flange located on the housing and supporting a spring against a side of the rim wall which spring provides for clamping an outer flange portion of the pressure sensor housing against another side of the rim wall.

Abstract: A process for the preparation of purified indigo comprises extracting the aqueous alkaline indoxylate solution arising from the synthesis with an inert water-insoluble solvent in the absence of oxygen before oxidizing the indoxylate solution to give indigo.

Abstract: A tire pressure detector for motor vehicles which is to be fastened to a wheel rim comprises a pressure switch actuated by the air pressure in the tire for monitoring the tire pressure. The pressure switch includes a reference pressure chamber with an electrically conductive switching diaphragm which closes the chamber toward the tire and which cooperates with a contact pin of the reference pressure chamber and an electric oscillating circuit connected to the latter in the detector housing. The reference pressure chamber (23) is axially clamped between a supporting ring and a spacing ring of insulating material in the metallic detector housing by a radial collar, which is formed, so that an annular gap is formed between the collar and the inner wall of the detector housing.

Abstract: A tire pressure detector for motor vehicles which is to be fastened at the circumference of a wheel rim and comprises an oscillating circuit having coupling coil which cooperates with a stationary receiver coil. In order to increase the minimum air gap between the rotating coupling coil and the stationary receiver coil, the coupling coil, which rotates with the wheel rim, is arranged on a middle limb of a plate-shaped ferrite core. The magnetic coupling for the stationary receiver coil is improved by means of the shape of the ferrite core (23).

Abstract: To measure a wide range of flow rates, and particularly such low flow rates as 0.5 liters per hour, while being able to accurately also measure rates of about 100 liters per hour, fluid is introduced axially into a rotor (14, 36, 40) which has outlet openings (24, 36, 45) positioned at their circumference, the rotor being rotated by reaction on the rotor upon fluid flow from the outlet openings. The rotor operates within a fluid flow chamber (15) from which is conducted outwardly through a duct positioned thereabove. Inflow of fluid may be guided for linear flow by guide ribs (13). The rotor may be a hollow disk-like structure (FIGS. 1-3) with spiral guide vanes therebetween, or a T-shaped tubular structure (FIGS. 4-6).

Abstract: The current consumption of a microprocessor is decreased by a switch which connects it to the electrical supply only when a control signal is received which indicates that the microprocessor is to execute a program. Specifically, an electronic switch such as a transistor is switched to the nonconductive state unless a control signal is received. For programs whose execution time is greater than the duration of the control signal, the microprocessor supplies a signal to the switch keeping it in the conductive state until the program has been fully executed.

Abstract: To mount control switches for convenient operation by the operator of motor vehicles, a cantilevered, free standing multi-faceted elongated hollow box like structure is secured to the steering post housing so that it is located between the steering wheel and the dashboard, spaced from the dashboard. A plurality of touch-sensitive switches are located on the surfaces of the structure defined by the facets thereof. The structure includes printed, or integrated circuits to which the switches are connected which, in turn, are attached to a cable which is separably connected to the cabling of the vehicle.

Abstract: Two surface electrodes are applied to an insulating substrate. The surface electrodes are totally surrounded by a metallic shield which is electrically floating, one of the electrodes being an emitter electrode emitting ac radiation and the other a receiving electrode. A portion of the emitted field is conducted by the shield. Upon approach, or touching of the shield by a grounded body, for example by the hand of a user, the field distribution within the shield will change and the radiation received by the receiving electrode will likewise change. In accordance with the present invention, an integrated circuit (IC) evaluation circuit is located beneath the metallic shield on the insulating substrate, the surface electrodes as well as external terminals passing through the insulated substrate being connected to the IC. Preferably, the shield is a plastic cap which is metallized, formed with snap tongs to snap over the insulated substrate.

Abstract: A leakage field capacitor has two adjacently located surface electrodes placed on an essentially plane support surface. A signal source is connected to one of the electrodes, so that this electrode, which may then be termed the transmitting electrode, will provide an electrical field which is sensed by the other, receiving electrode, which is connected to an evaluation circuit which evaluates disturbance of the field generated by the transmitting electrode. A metallic shield which is electrically floating i.e.