Abstract: An electromagnetic precision rotary drive for a disk-shaped rotor. Along a peripheral annular zone of the rotor an armature band with a periodical pattern is disposed, which, within each period, varies continuously between the inner and the outer edge of the annular zone. The rotor is surrounded by a magent support, which carries at least one permanent magnet. If the magnet support is moved back and forth substantially radially, a torque is exerted on the rotor due to the interaction between the permanent magnet and the armature band.

Abstract: A rail vehicle with spring support of its car body on an underframe with flanged wheels for guidance and support on a track. Permanent magnets are provided on the underframe, which exert an attraction counter to the wheel load on armature bars extending along the track. The magnetic force of the magnets is controllable as a function of the load (weight) of the car body by an increase or decrease of the magnetic resistance of a ferromagnetic magnet core by mechanical means as the load decreases or increases.

Abstract: A retromodulator in the form of a triple mirror with electromechanical transducer elements for planar deformation by which incident light radiation is retroflected in modulated form. At least one face of the retromodulator is formed as an oscillatory diaphragm which is excited to natural oscillations by the transducer elements. In a preferred form of realization, the oscillatory diaphragm comprises a piezoelectric foil, on whose inner side a reflecting layer is applied and on whose outer side electrodes are applied to which the modulation signal is applied.

Abstract: A vibration isolator is formed with a spring mechanism and a fluid transmion mechanism interposed between a vibrating member and a support member. The fluid transmission mechanism includes a primary fluid chamber and a secondary fluid chamber, with the secondary fluid chamber being deformed to a greater extent than the primary fluid chamber as a result of vibrations. An inertia mass operatively associated with the secondary fluid chamber is displaced as a result of vibrations and is thereby accelerated with a resulting inertia force causing fluid pressure change in the fluid transmission mechanism which compensates as a dynamic force the dynamic portion of the spring force transmitted from the spring mechanism to the support member.

Abstract: A detachable connection between a light-guide fiber and a laser suited particularly for medical purposes comprises two coupling elements. In the light exit opening of the first coupling element an optical coupling system is arranged which is connected to the former and can be adjusted parallel and/or perpendicularly to the optical axis. The first coupling element comprises a device for generating an axial force on the second coupling element. Between the first and second coupling elements, contact surfaces with high thermal conductvity are provided, by means of which heat is transferred in the coupled condition from the second coupling element to the first coupling element.

Abstract: In order to achieve in a truck for a track vehicle with an H-shaped truck frame which consists of a composite fiber structure serving the function of a primary spring, with two longitudinal beams connected to each other via transverse beams, a distribution of the loads of the truck frame suitable for composite fibers, the frame contains a torsion-elastic central plate member which couples the longitudinal beams to each other independently of the transverse beams, is designed in the truck plane as a frame stiffening element, is provided with load introduction points for the longitudinal and transverse support of the vehicle body and is designed as a bending-stiff composite fiber component for the transmission of longitudinal and transverse forces between the load introduction points and the longitudinal beams.

Abstract: In a bending load beam, in particular for the truck or bogie frames of rail vehicles, comprising a fiber composite structure relatively rigid at least in the center of the beam, elastic at the beam end sections, having an upper and a lower fiber cord fashioned as respective upper and lower flanges with the fiber oriented in the longitudinal direction of the beam and with a fiber composite core placed between the fiber cords to maintain their distance, the fiber composite core is composed of fiber composite load webs distributed lamellae-like over the width of the beam. The load webs are oriented in the longitudinal direction of the beam, form the boundaries of hollow chambers, and are bound into the upper and the lower fiber cords.

Abstract: An electric transducer for measuring mechanical quantities comprises a movable tongue which is acted upon by the mechanical quantity to be measured and the deflection of which is converted into an electrical signal. The tip of the tongue may be designed as the gate and an electric conduction channel disposed opposite the tip at a small distance therefrom may comprise the source-drain path of a field effect transistor, or vice versa.

Abstract: A position transmitter which determines the point of incidence of a light or particle beam on a sensor array, and the output signal of which gives the point of incidence in a digital code. The position transmitter comprises a sensor array having diodes which are arranged on a substrate and are connected at least partly to each other as well as to a digital bus, of which a part of the array generates electron-hole pairs if the light or particle beam strikes, and another part of the diode array arranged in accordance with the desired code is switched off in its function.

Abstract: An unfoldable and refoldable antenna reflector having support ribs which are linked to a support body, the support ribs being spaced from the latter approximately radially in the unfolded condition, for carrying a reflector screen or a reflector foil and which can be tilted up for refolding, folding elements being attached between adjacent support ribs which extend substantially transversely to the support ribs and are fastened at predeterminable spacings to the reflector screen or to the reflector foil, the spacings between the fastening points being shortened during refolding.

Abstract: In a method for the wet grinding of explosive, a homogeneous suspension with a given ratio of water to explosive of e.g. 4:1 is produced in a vessel with an agitator. The level in the vessel (10) is adjusted as the suspension is being supplied to the mill in such a way that it does fall below the level of the blades of the agitator.

Abstract: A method for controlling a magnetic suspension vehicle which is guided by means of levitation and guidance magnets (magnetic wheels) along a track by means of individual magnet controls for each magnetic wheel. The controller signals (U.sub.R) or at least portions (U.sub.Su) of these signals are stochastically falsified for the individual magnet controls during standstill suspension or at low travel velocities of the magnetic suspension vehicle independently of each other. Thereby, the central interference possibilities of the track to the system vehicle/track are decentralized and asynchronized, so that all controls act independently of each other and the magnetic suspension vehicle or the dynamic overall system can be kept stable also at standstill and at low travel velocities.

Abstract: A method and arrangement for the transmission of data, in digital form, in a bus system, which includes a central unit, several stations, as well as a bus line or data bus. During operation, the following different transmission phases take place: An initiation phase, in which the central control unit queries all of the stations and prepares a request phase; the request phase, in which the individual stations report a required bus access; an allocation phase, in which each station obtains a time slot in response to its request; and a data phase, for transmission of the data. The central unit includes a phase control, a request collector, a time slot allocator, and a register. A number of the stations are provided with a request generator in such a way that the latter can signal a need to the bus access. Thus, an optimum utilization of the transmission capacity is achieved, possibly by switching stations off. However, a rapid bus access is possible at any time for important stations.

Abstract: A process for producing an integrated system of thin-film solar cells (14, 15) connected in series, wherein a first electrode layer is initially large-area deposited on a substrate and subsequently a photosensitive layer composed of sublayers is applied. Before structuring of the layers, for the purpose of series connecting, a second electrode layer is large-area applied on the photosensitive layer. Predetermined areas are then removed from the three layers to permit connection (12) of the now insulated individual solar cells (14, 15). This technique, overall, is particularly economical.

Abstract: An apparatus for recognizing relative extrema in a dispersive digital data word sequence which includes relatively few, simple component elements specifically including a comparator which generates a positive or zero logic signal depending on the sign of the word comparison between two successive words, a counter operating within a limited numerical range for counting the comparator output signals upward or downward, and a threshold detector responding when a given counter status is exceeded or fallen short of for maximum or minimum indication, and which due to its structurally and operatively simple design ensures real-time processing of scattering data word sequences with a high word frequency, e.g., 500 MHz.

Abstract: A light guide, particularly for medical instruments with a light guide fiber, which is surrounded, if needed, by a protective jacket, a sleeve which surrounds the light guide fiber at a distance therefrom and consists of one or several tubes and a feeding unit on one side of the light guide for the feeding of light radiation into the light guide fiber. The light guide fiber and a tube of the sleeve are mounted in the feeding unit, while the other end of the light guide fiber is mounted in the tube of the sleeve. A length compensating element that can change its length axially but is largely not expandable radially, is set in the sleeve to prevent stresses acting longitudinally on the sleeve and light guide fiber due to bending, especially during the coiling of the light guide fiber.

Abstract: An emergency supply system for maintaining the emergency flight control of a high-performance aircraft of aerodynamically unstable design having three energy systems, namely, two identical hydraulic systems, connected in parallel for redundancy, for actuation of the control surfaces of the aircraft required for its ability to fly, and an electric on-board system having at least one generator, a rechargeable battery and a non-rechargeable emergency battery, the three energy systems being interconnectible in terms of energy by a power transmission unit, and wherein the two hydraulic systems are divided into subsystems associated with single or several rudder functions which, if necessary, can be disconnected singly.

Abstract: To brake a sabot accelerated in a launcher of a recoiless rifle tube a mandrel shaped braking sleeve is disposed in the tube and an intermediate space is provided between a tapered surface of the mandrel and the tube into which the material of the front edge of the sabot expanded. In this way when the sabot is accelerated against the mandrel, its front edge slides along the tapered surface, radially outwardly into the intermediate space. This functions to deform and positively stop the movement of the sabot before it leaves the tube.

Abstract: A device for reducing the frictional drag inherent in flow mechanics in airborne, waterborne and space vehicles in which the surface of a body in a flowing medium is provided with an asymmetrical microstructure in the form of grooved profiles whose dimensions do not essentially exceed the average free travel length of the molecules of the medium.

Abstract: In the disclosed device, a lens arrangement focuses light upon a detecting sensor arrangement as a vehicle passes over an object, such as the ground, whose surface is to be determined. An optical device slews the path of light to the lens arrangement from left to right relative to the direction of vehicle movement. In one embodiment, a four-part prism rotating on an axis along the direction of vehicle movement passes light through three lenses angled down, for, and aft the vertical and separate radiation detectors simultaneously sense radiation from the earth's surface. In another embodiment, a rotating hexagonal prism has outer reflecting surfaces skewed normal, for, and aft, so that a single lens views sequential signals and applies them to a radiation detector. The signals are sampled, held, digitally converted, recorded, and stored.