Abstract: In a gyro arranged to be mounted in a vehicle and operable selectively as a directional gyro or as a gyro compass, which gyro includes a gyro rotor rotatable about a horizontal spin axis, an inner gimbal supporting the gyro rotor via its spin axis and pivotal about an axis which is maintained vertical when the gyro is operating as a gyro compass, a second gimbal supporting the inner gimbal via its axis and pivotal about an axis normally parallel to the rotor spin axis, an outer gimbal supporting the second gimbal and pivotal about an axis oriented approximately parallel to the vertical axis of the vehicle when the vehicle is upright, and control units for maintaining the desired orientations between the various axes, there is provided an intermediate gimbal disposed between the second gimbal and the outer gimbal, supporting the second gimbal via its axis, and having a pivot axis which is supported by the outer gimbal and which extends orthogonally to the axes of the second and outer gimbals, the second and in

Abstract: In order to monitor irregularities and changes in structure of yarn being produced in an open-end spinning turbine provided with its own individual drive motor, there is provided a circuit which senses and evaluates changes in the current consumption by the motor.

Abstract: A bearing and drive structure for the funnel-shaped spinning element of an open-end spinning turbine, composed of a stator with a projecting portion carrying an elastically mounted bearing and a rotor with a cup-shaped portion into which the projecting portion of the stator extends, the rotor being carried by the bearing and having its center of gravity at least approximately in the region defined between the axial ends of the flexible bearing, the stator carrying electrical windings cooperating with the cup-shaped rotor portion to form an electrical drive for the rotor.

Abstract: In a bearing for the rotor of a rotary device, preferably a spinning turbine, the bearing being composed of an oil-lubricated slide bearing bush and a journal pin connected to the rotor and mounted to the bush for rotation relative thereto, the bush presenting a cylindrical surface providing support for the pin in the radial direction, and elements for yieldingly mounting the bush, there is further provided a bearing mounted to rotate with the rotor and having an axial end face forming, with an axial end face of the bush, an axial slide bearing for the rotor, the axial bearing receiving a supply of lubricating oil during rotation of the device, and a structure defining a narrow annular gap in the vicinity of, and spaced radially outwardly from, the axial slide bearing to provide a constricted region adjacent the axial bearing at which lubricating oil ejected from the axial bearing accumulates.

Abstract: An antilocking control system for the wheel brakes of a vehicle, which system includes two identically designed control units for various wheels of the vehicle and with each control unit comprising at least one wheel speed sensor, an evaluation circuit for evaluating the output signals from the sensors and for producing control signals and a brake pressure control unit responsive to the control signals from the evaluation circuit, as well as a device for testing the operability of the antilocking control system at desired time intervals. The testing device, upon receipt of a start instruction, simultaneously feeds at least one identical test signal to each of the two control units, and then compares the effect of the test signal on the two control units by comparing output signals from the two control units at given corresponding points in the two control units for at least approximate coincidence with respect to the timely occurrence and/or the magnitude of the signals and generates a control signal, e.g.

Abstract: In an antilocking control system in which wheel speed is monitored to control a braking operation in a manner to prevent locking of the braked wheels, a tendency of the wheel velocity to decrease more rapidly than a reference rate acts to reduce the brake pressure, and a subsequent tendency of the wheel velocity to increase acts to either hold constant or to gradually increase the brake pressure.

Abstract: A two-circuit master cylinder unit for brakes includes first and second cylinders and first and second pistons slidably received in the first and second cylinders, respectively. The first piston is actuated by an external force for pressurizing hydraulic fluid in the first cylinder. The second piston is exposed to a pressure which depends upon the pressure generated in the first cylinder. A shackle device which couples the first and second pistons to one another, allows a relative axial displacement of predetermined magnitude between the first and second pistons. A switching device is operatively connected to the shackle device and is actuated when the predetermined magnitude of relative displacement between the pistons is reached. A warning device is operatively connected to the switching device and responds when the switching device is actuated.

Abstract: In an anti-locking brake control system in which two wheels on the same axle have their brakes individually controlled via individual brake pressure control devices, and which includes a monitoring system for interrupting the control operation of a control device whenever that device has responded to a control signal for more than a predetermined time period, a switching arrangement is provided which, whenever the control device for one wheel on the axle has responded for longer than the predetermined time period, connects that control device to receive the associated control signals destined for the control device for the other wheel on that axle.

Abstract: An automatic antilock control system for vehicles comprises a sensor which determines the presence of a tendency of a wheel to lock, a brake pressure open loop control device for varying the brake pressure at the said wheel and controlled by an evaluation circuit responsive to the sensor, the evaluation circuit including switch apparatus for producing open loop control signals which achieve a steep brake presence variation during an antilock control operation and thereafter achieve a further slower pressure variation, and open loop control apparatus for varying the duration of the pressure variation in dependence on the duration of the steep pressure variation of the previous cycle.

Abstract: An antilocking control system for the wheel brakes of a vehicle wherein the control system is of the type including sensors for monitoring the rotational behavior of the wheels, an evaluation circuit which receives the signals from the sensors and which generates control signals based on the signals from the sensors, and a pressure reduction unit which receives the control signals and which has a setting for pressure buildup, a setting for pressure reduction, and a setting for keeping the pressure at least approximately constant; and wherein the evaluation circuit includes a switching arrangement for emitting a control signal for causing pressure reduction upon the occurrence of a tendency to lock, for emitting a control signal for keeping the pressure constant upon a wheel acceleration of a certain value, and for normally also emitting a control signal for keeping the pressure constant in the transition phase between the end of the control signal for reducing pressure and the beginning of the signal indicati

Abstract: A circuit arrangement for providing the reference value for generating the slip signals used to control the brake pressure in an antilocking control system for the wheel brakes of a vehicle, from the value of two wheel speed signals. A selector circuit feeds the wheel signal with the greater value to a memory to cause the memory to store this greater value as a reference value. A comparison circuit compares the values of each of the two wheel speed signals with the value stored in the memory and emits respective output signals whenever the value of either of the wheel speed signals exceeds or falls below the value stored in the memory. A logic circuit, which is responsive to the output signals from the comparison circuit and to signals indicating that the pressure control devices associated with the wheels from which the wheel speed signals are derived have responded, causes the reference value stored in the memory to be selectively varied according to one of a plurality of different time constants.

Abstract: An anti-lock regulating system for brakes associated with wheels, has a first brake circuit including the brake of at least one wheel; a braking pressure regulating device for altering the braking pressure when the wheels have a tendency to lock; a hydraulic braking pressure generator coupled to the first brake circuit through the braking pressure regulating device; a second brake circuit including the brake of at least one other wheel; and a hydraulic control valve connecting the second brake circuit with the hydraulic braking pressure generator. The hydraulic control valve has a normally open position and a closed position. There is further provided a control piston having opposite first and second faces. The first face of the control piston is exposed to a pressure P.sub.R ' which is dependent from the braking pressure P.sub.R prevailing in the second brake circuit.

Abstract: An antilocking control system for vehicles in which control signals for controlling a pressure regulating unit associated with two wheels or two groups of wheels are produced in an evaluating circuit from the signals of at least one sensor associated with these wheels or groups of wheels and in which the pressure is at times controlled based on the rotational behavior of the wheel first tending to lock (select-low) and at times based on the rotational behavior of the wheel being the last to show a tendency to lock (select-high). During the select-low mode of operation the duration T.sub.1 of the pressure buildup phase following a pressure reduction phase is measured until there again occurs a tendency to lock at at least one wheel and then the mode of operation is switched to the select-high mode. During the select-high mode of operation the duration T.sub.2 of the pressure increase period is measured and the result is continuously compared with the measured duration (T.sub.

Abstract: An improved anti-locking control system for the wheel brakes of four wheel vehicles having a braking system with dual brake lines each connected to the brakes associated with two wheels, which anti-locking control system is of the type in which the brake pressure is regulated jointly at two wheels by a brake pressure regulating unit connected in one of the brake lines and in which signals which are derived from the rotational behavior of two diagonally opposite wheels of the vehicle are fed to an evaluation circuit where brake pressure control signals are generated for the pressure regulating unit. According to the invention, the two wheel brakes connected to the brake line provided with the pressure regulating unit are the brakes of the diagonally opposite wheels whose rotational behavior is being evaluated or the brakes of the steered wheels of the vehicle; a switching arrangement is provided which alternatingly produces two operating states for the evaluation circuit, i.e.

Abstract: An electrical rotary speed signal generator comprising a rotor mounted on a rotary component and a stator mounted opposite part of the rotor on a stationary component, the stator producing a signal representative of the rotational speed of the rotor by sensing the latter, a non-metallic housing for the stator and at least two metallic bearing bodies on the housing, at least one of which bearing bodies is radially elastically flexible, the bearing bodies being adapted to engage the wall of a bore in the stationary component in which the stator is positioned.

Abstract: A method for the conversion of a constantly occurring measured value in digital form into a filtered digital value comprises comparing the instantaneous measured value with a digital value determined by previous measurements, evaluating the difference .DELTA. of the values in accordance with a predetermined function K = f (.DELTA.) and adding this evaluated value, correct with respect sign, to the said digital value determined by previous measurements.The invention also includes an arrangement suitable for carrying out this method.

Abstract: In an electrical machine including a rotor, a plurality of permanent magnets mounted on the rotor, a stator spaced from the rotor by an air gap, and electrical windings disposed on the stator to be traversed by the magnetic fields of the permanent magnets, the rotor is elastically or resiliently held relative to the stator by a rotor bearing, the stator includes a stator body made of an electrically nonconductive and nonmagnetizable material for preventing hysteresis losses, eddy current losses, and magnetic reaction forces on the rotor, and the permanent magnets, the windings and stator are arranged for causing the magnetic fields of the permanent magnets to pass through the air gap between rotor and stator, the windings, and the stator body.

Abstract: An autochecking arrangement for a hydraulic system, which includes an actuating piston displaceable under the action of a pressure source and controllable as to displacement independently of the pressure of the pressure source by a valve arrangement, comprises a pressure sensor connected into the hydraulic system and emitting signals corresponding to at least two sensed pressure thresholds, a switching system for providing sequentially different actuation states of the hydraulic system and a monitor for monitoring the correct actuation of the hydraulic system in cooperation with the signals from the pressure sensor.