Abstract: An x-ray detector includes a scintillation element having a radiation entry side and a radiation exit side disposed in succession in a direction of radiation propagation, with respective photosemiconductor layers in optical contact with the scintillation element being disposed on both the radiation entry side and the radiation exit side of the scintillation element. The layers on each side are separated to form a succession of discrete photodiodes, and the photodiodes on one side of the scintillation element may be offset relative to the photodiodes on the other side of the scintillation element.

Abstract: A guide system for a drawer comprises a mounting rail attached to a piece of furniture, a drawer rail attached to the drawer and supported and guided by the mounting rail for translational movement relative thereto.The rails are provided with vertically superimposed, longitudinally extending magnetic tracks of the same polarity which repel each other and maintain a magnetic air gap therebetween, so that the magnetic repelling forces are load-bearing and maintain the drawer in a suspended condition. Lateral guide means are provided to maintain the vertical alignment of the superimposed magnetic tracks.The magnetic load-bearing tracks may be formed from permanent magnets or electromagnets.

Abstract: A drawer guiding system comprises a first rail for mounting in a furniture body, a second rail for mounting on a drawer and optionally an intermediate rail between the first and second rails, the rails being connected so as to be reciprocally slidable relative to one another. Pairs of magnetic components associated with respective adjacent rails assist or retard their relative displacement by mutual magnetic attration or repulsion. Each magnetic component is made up of individual magnets with differently aligned polarities, so that some attract corresponding magnets of an associated magnetic component and some repel. As the drawer approaches one end of its travel the overall mutual repulsion between the magnetic components of each pair becomes an attraction or vice-versa.

Abstract: A logic analyzer has a plurality of data channels and clock channels which are connectible to a digital circuit. Each clock channel has associated therewith a temporary memory connected to all of the data channels, and the data stored in the temporary memories are successively delivered to a data memory under the control of master clock signals.

Abstract: An accident prevention system for machines having one or more movable components, such as rotatable components, has a cover by means of which access may be had to the movable component and which can be moved to an open position. A latching arrangement normally holds the cover in closed position. An electric circuit is provided including a source of electric energy, a normally open switch and an electrically energizable actuating element which can deactivate the latching arrangement. A detector senses movement of the movable component and, when it determines that the movable component is stationary, completes the electric circuit up to the switch so that when the switch is subsequently operated, the actuating element is actuated and disengages the latching arrangement to permit the cover to be opened.

Abstract: In an exemplary embodiment, a measuring arrangement for irradiating the examination subject from different directions has a radiation source, a radiation receiver, and a computer connected to the radiation receiver for computing the attenuation values of specific image points of the irradiated body layer from the output signals of the radiation receiver. A collimator is present with a collimator grid compartment for each detector of the radiation receiver. Every detector is comprised of a scintillator crystal and a photoelectric transducer. The scintillator crystal is mounted on the surface of the photoelectric transducer such that the transducer is disposed between the associated collimator plate and the scintillator crystal. The scintillator crystal is coated, on its surface, with the exception of the surface confronting the photoelectric transducer, with an optical seal which can be light-reflecting on its side resting against the scintillator crystal.

Abstract: An ionization chamber of the type used in an ionization smoke detector is made adjustable. The chamber has two electrodes and one radioactive source for ionizing the electrode gap. One of the electrodes is laterally displaceable relative to the other. As a result of displacement of this electrode, areas of the electrode with differing geometrical configurations can be brought into the ionization zone of the radioactive source.Several different embodiments of the electrode with different geometrical configurations are described.

Abstract: Self-supporting luminescent screens made by applying a releasing agent to the surface of a mechanical supporting structure, having the desired shape, which agent is bound with a binding substance that is volatile at the evaporating temperature of a luminescent screen material, the latter being then deposited in a layer by evaporation onto the prepared supporting surface, until the deposited screen layer reaches a desired thickness, and eventually separating and removing the produced luminescent screen from the supporting structure.

Abstract: An X-ray image amplifier or intensifier and, more particularly, an input screen for electron-optical image intensifiers having a phosphorescent or luminescent layer supported on a carrier, which is followed by a photocathode layer, and wherein a dark-colored intermediate layer is located between the luminescent layer and the photocathode layer. The darkly-colored layer employed between the luminescent layer and the photocathode layer is constituted of an at least approximately uniform surface coating of carbon or graphite facilitating the partial transmission of the light from the luminescent layer.