Abstract: For the dynamic compensation of the offset voltage in such converters each non-inverting comparator input (+) is connected via a first transfer transistor (T11, T12, T1p) to the signal input (SE) and via a second transfer transistor (T21, T22, T2p) to the associated voltage divider tap of the voltage divider as applied to the reference voltage (Ur). Moreover, each inverting comparator input (-), via a capacitor (C1, C2, Cp) is applied to the associated voltage divider tap and, via a third transfer transistor (T31, T32, T3p) and across a resistor (R'1, R'2, R'p) arranged in series therewith, to the associated comparator output. The second and third transfer transistors are rendered conductive during short intervals (T) between conversions by the clock signal (F), and the first transfer transistors are rendered non-conductive via the inverter (IV), and during the conversion time (t) the first transfer transistors are rendered conductive, and the second and third transfer transistors are rendered non-conductive.

Abstract: A windshield wiper assembly includes a helical compression spring arranged laterally staggered relative to the wiper shaft in such a way that the center line of the helical compression spring runs alongside the wiper shaft. This permits the wiper arm to be made very compact and low, so that it can be used in motor vehicle windshield wiper installations having a concealed parking position.

Abstract: To control a brake slip control apparatus, the rotational behavior of the wheels or of the axles is sensed with the aid of sensors, and the sensor signals for the generation of valve control signals, by which the braking pressure at the wheels is controlled dependent upon the wheel rotational behavior, will be processed electronically. On the basis of these sensor signals, valve control signals will be produced in at least two independently acting, synchronously driven logical circuit units, which may be integrated circuit configurations or complete "microcontrollers" or single-chip-microcomputers, and the signals' waveforms of each of the two circuit units can be compared and checked for agreement externally and internally at corresponding locations within the two circuit units. Upon the occurrence of variations in the external and/or the internal signals or in the signals' waveform, there will be caused, initiated or prepared a complete or partial disconnection of the brake slip control.

Abstract: A rotary switch having a rotor and a housing and providing a plurality of angular switch positions or stages. The switch includes a plurality of radial slots in the housing having stop pins selectively inserted therein. The angular spacing between neighboring slots is twice the position angle or rotation from one switch position to the other. One or two stop bolts are mounted on the rotor at angular positions between the angular positions of a selected pair of stop pins in the housing. The stop bolts are separated from one another by a spacing equal to the position angle of rotation. The stop bolts engage the stop pins to limit the desired number of stages or switch positions. By selecting a corresponding combination of one or more stop pins and the arrangement of one or two stop bolts, any odd or even number of switch positions, each separated by the minimum angle or rotation, can be selected.

Abstract: Between the source of operating voltage (U) and the zero point of the circuit there are provided four series arrangements (s1 . . . s4) of the controlled current paths of each time three insulated-gate field-effect transistors of the same conductivity type, of which the upper transistors (o1 . . . o4) as connected to the source of operating voltage, and the center transistors (m1 . . . m4) are of the depletion type and of identical geometry, while the lower transistors (u1 . . . u4) as connected to the zero point of the circuit, are of the enhancement type and likewise of identical geometry. The center transistors (m1, m3, m4) are connected as a resistors while the gate of the center transistor (m2) is connected to the point connecting the upper and the center transistor (o4, m4). The first input (e1) is connected to the gates of the upper transistors (o1, o3) and the second input (e2) to the gates of the upper transistors (o2, o4). The output of the inverter as formed by the series arrangements (s1 . . .

Abstract: A power brake unit for automotive vehicles comprising a valve adapted to meter fluid from an energy source into a booster chamber to act upon a booster piston arrangement. The booster piston arrangement includes a first booster piston and a second booster piston with the second booster piston being inoperative in the event of failure of the energy source. If the energy source fails, the pedal force is directly and mechanically transmitted from the brake pedal to the master cylinder piston via the first booster piston.

Abstract: A deceleration-sensitive braking pressure control unit having a ball valve freely movable in an inlet chamber of the housing of the unit. The ball opens or closes a channel for the passage of pressure fluid through a longitudinally slidable, pressurized stepped piston upon attainment of the change-over pressure with the vehicle loaded. The stepped piston is movable in the longitudinal bore of a pressurized annular piston which is supported slidably in the housing. In this arrangement, the annular piston is slidable in the housing to control the pressure fluid passage between its annular end face and the surface of the ball upon attainment of the change-over pressure, with the vehicle unloaded. Both the stepped piston, which contains the channel and the annular piston are comprised of varying effective surfaces acted upon by pressure fluid and are maintained in their initial positions in the housing by springs.

Abstract: An improved digital integrated chrominance-channel circuit having gain control for color-television receivers includes at least one integrated circuit for digitally processing the composite color signal. The circuit includes a first limiter inserted between a parallel multiplier and a burst-amplitude-measuring stage, and a control stage including a parallel subtracter whose minuend input is fed with a reference signal, and whose subtrahend input is connected to the output of the burst-amplitude-measuring stage. A digital accumulator whose enable input is presented with a signal derived from the trailing edge of a burst gating signal is used as an integrator.

Abstract: A brake shoe assembly is composed of a carrier plate, a friction material lining secured to the carrier plate and the brake-shoe spring. The brake-shoe spring comprises between its legs a loop-shaped portion which is supported in a recess in the brake shoe, this recess being open towards the edge of the brake shoe. Arranged at the open recess is a projection which extends into the loop-shaped portion between two convolutions of the brake-shoe spring. The two convolutions are interconnected by a wire portion disposed at the area of the legs.

Abstract: A spot-type disc brake for automotive vehicles, having brake shoes arranged on both sides of a brake disc. A brake support member receives the brake torque. The support member bears guide rods in which a brake caliper which straddles the brake disc is guided slidably on the brake support member. The brake caliper is provided with an actuating device to urge the brake shoes against the brake disc. The brake caliper is resiliently preloaded in the brake's release direction and with the spring force being maintained constant independently of the pad thickness by the position of a friction element that is slidably supported at the brake support member. After braking actions that result in an elastic expansion of the brake caliper, there is available a sufficient brake clearance immediately upon termination of the braking action, by the use of the friction element being arranged in a sleeve to allow axial movement by the amount of the clearance.

Abstract: An improved kit of two integrated circuits having a phase-locked loop clock oscillator for use in a color television receiver utilizing digital signal processing is described. The voltage controlled oscillator and the phase discriminator of the phase-locked loop are each located in a different one of the two integrated circuits. The control signals for the voltage controlled oscillator are transferred into it via a two-wire digital bus. External discrete components are eliminated.

Abstract: A push button slide switch, the slider of which is held within the housing by means of a tongue-like retaining member. The retaining member is shaped so that it can be moved upwards by means of a simple flat tool which is inserted below or above the wall of the housing carrying the retaining member. Thus, the slider can be easily removed from the switch housing even when the switch is mounted in a front panel.

Abstract: To provide a power brake having relatively small hysteresis between brake pedal pressure and brake hose pressure and with compact construction, the push rod leading from the brake pedal to the brake master cylinder is divided into an input rod and an output rod. A pressure sensitive element is disposed between the rods and is displacable therewith. The pressure-sensitive element determines the force with which the servo member acts upon the output rod.

Abstract: A sealing cap for mating to cylindrical parts such as the bolt guide of a spot-type disk brake. The cap includes a resilient boot one end portion of which is adapted to be secured circumferentially to a first cylindrical part and the other end portion of which is adapted to be secured circumferentially to a second cylindrical part. At least one of said end portion comprises a rigid insert member. In order that the sealing cap may be easily mounted and secured with no adverse effects, the other end portion may comprise a rigid insert member. Both insert memebers have at least a part of the radial extension thereof are disposed the same radial distance from the axis of the cylindrical parts.

Abstract: An arrangement for controlling the admission of a hydraulic fluid to respective wheel brake actuating cylinders either from an auxiliary pressure source or from a master cylinder includes a pressure limiting valve and a hydraulically operatable switching valve including a valve body movable only when the auxiliary pressure source is fully operational from a first position in which it connects the master cylinder with the actuating cylinders to a second position in which it connects the auxiliary pressure source with the actuating cylinders and the master cylinder with the pressure limiting valve. The limiting pressure of the pressure limiting valve is adjusted in dependence on the brake pedal travel. The respective master cylinder piston carries a deflectable seal which permits fluid to flow past it in one direction but not in the opposite direction. The pressure at which the switching valve member moves into its second position has a predetermined level, preferably 1 to 2 bar gauge.

Abstract: A pump impeller to be used when pumping liquid containing solid bodies. The impeller is provided with one single vane designed with a hollow for balancing the impeller. The hollow is connected to the surroundings via a slot at a point where the vane has its maximum diameter. The impeller is then perfectly balanced when rotating in liquid as well as in air.

Abstract: A counter for the non-volatile storage of an n-bit word includes a storage matrix having 2.sup.m non-volatile electrically programmable storage elements which may be bitwise selected by means of a word shift register and a bit shift register, a binary counter having m+n bistable flip-flops, with each one of the n Most Significant Bit flip-flops being coupled to a storage cell of a non-volatile storage device, and a clock sequence control for providing reset, erase and write pulses.

Abstract: A digital FM demodulation circuit provides improved resolution by selecting from a group of at least four of the most recent samples, a subgroup of three samples. The first and last samples of the selected subgroup are summed and the sum is divided by the intermediate sample.

Abstract: EEPROM showing storage cells comprising a tunnel injector which at the one hand is connected to a first bit line by means of the source-drain-line of a floating gate FET and at the other hand to a second bit line by means of the source-drain-line of a selection FET. Interferences between addressed groups and not addressed groups of storage cells during writing are eliminated by means of connection of the first bitline of the not addressed groups via the source-drain-lines of a depletion type FET and an enhancement FET to ground.

Abstract: To monitor and control hydraulic brake slip control devices supplied with energy from an external source and intended for use on motor vehicles equipped with several brake circuits, a check is kept on the fluid level in the reservoir holding the hydraulic fluid and on the pressure in the chambers supplied with the external energy. When the fluid level drops, which is detected by a reservoir level warning device, or when the pressure drops causing pressure warning switches to respond, the brake slip control will be only partially deactivated initially by halting the reduction in pressure in the static brake circuits and inhibiting the dynamic fluid flow into the static brake circuits. The dynamic brake circuit will continue to allow a controlled deceleration of the connected wheels. The partial deactivation will be initiated immediately or with a time delay or only if the error signals continue to be present beyond a predetermined period of time.