Abstract: A sender/receiver apparatus configured for a bi-directional beam wave guide may be configured with an optical prism. the device can be placed in a housing with a wave guide socket connected at an optical port. Spherical lenses and an internal wave guide may be located between the prism and the optical port, the sender and the receiver, respectively. The prism may exhibit an aperture reflecting surface or diaphragm.

Abstract: A sliding gate valve for metallurgical vessels, such as pouring ladles, is disclosed. The sliding gate valve may include a slide gate housing fastenable to a melt-containing vessel. A heat-resistant closure plate may be held stationary by a movable slide plate pressing against the closure plate. The slide plate may be supported in a frame having two sets of rollers. The frame may be connected to a drive, for example a hydraulic or pneumatic drive. An aperture may be provided in the housing bottom for passage of the frame rollers therethrough. The distance corresponding to the axial spacing between the sets of rollers is equivalent to the distance corresponding to the axial spacing between side apertures of the bottom aperture. The axial spacing between the rollers corresponds to the axial spacing between the side apertures to allow for the simultaneous passage of both sets of rollers through the side apertures.

Abstract: A connecting element establishes an electrical connection between two mutually rotating parts, such as the steering column and the steering wheel of an automotive vehicle. The connecting element includes a stator fastened to the steering column and a rotor fastened to a hub of the steering wheel. A current conductor in the form of a flat ribbon cable is carried on the rotor and passes through the walls of the rotor and the stator for the establishement of electrical contact between the power source and a power consuming device. The rotor and stator of the connecting element are combined in a cassette and each may be equipped with a multiple pole socket to receive a locking pin connector. Each locking pin connector has a predetermined number of poles corresponding at maximum to the number of poles of the multiple pole socket. A short circuit bridge is fastened to the housing of the stator.

Abstract: A heat insulation system may protect surfaces along which a hot gas stream is conducted. The insulation may be several plies of slightly compressed ceramic fiber mats, separated by intermediate plates. Cover plates are attached to the hot side. The cover plates are mounted by holding bolts on the support structure carrying the insulation. The support structure may be the liner of a nuclear reactor pressure vessel. Thickness and size of the cover plates are optimized with regard to the stresses occurring at the edges of the holes provided for the holding bolts to ensure dimensional stability of the fiber mats and the functional capability of the metallic mounting system during a long period of time. Several sealing sleeves may be arranged on each holding bolt. In a first solution, some intermediate plates exhibit lug-shaped points stamped out of the plates on both sides in vertical areas of the heat insulation system. The lug-shaped points which transfer the forces of the fiber mats to the intermediate plates.

Abstract: Wideband antenna systems may provide continuous coverage over the VLF, HF, VHF, and UHF frequency ranges. Matching transformers, insertion resistors and damping elements are integral parts of these antenna systems.

Abstract: The valve needle of a gas sealing valve for plastic processing plants may be controlled by a control valve, which in turn is controlled by a working gas volume in order to prevent formation of internal waviness in injection molded articles even under very high gas pressures and to assure high flexibility in production without refitting delays. During plastic mass injection the valve needle seals tightly. During gas return the valve needle remains open until the gas bubble in the mold cavity is completely emptied.

Abstract: Current conduction connector to bridge over interruptions of conduction between mutually rotating parts, in particular between a steering wheel and a steering column. The assembly includes a housing equipped with an outgoing conductor, a cover, as the stator mounted on the steering column, and a rotor, rotatingly supported in the housing. The rotor is also equipped with an outgoing conductor connected to the steering wheel. The housing and rotor define an annular space surrounding which contains an insulated conductor strip would several times around the rotor and terminated at the outgoing conductors The bottom of the housing and the cover may both be provided with a layer of a textile insulating material. The textile insulating material may be a polyethylene fiber web, densified by a binder into a highly abrasion resistant felt. The layer of felt may be fastened to the bottom of the housing and to the cover with a self-adhesive coating.

Abstract: A cylindrical mixing chamber opens into a subsequent cylindrical quieting chamber at an acute angle alpha against its direction of outflow to avoid spattering during the output of a plastic mixture formed of a reactive plastic components from a mixing apparatus.

Abstract: A process is provided for the long term shutdown of a high temperature nuclear reactor comprised of a pile of spherical fuel elements in a core by means of a neutron absorbing absorber material wherein the absorber material consisting of spherical absorber elements is introduced in the core of spherical fuel elements in the form of a column, but wherein the intermixing of the absorber material with the fuel elements is prevented. An apparatus for practicing the process is also provided comprised of a graphite side reflector concentrically surrounding a circular cylindrical core filled with a pile of spherical fuel elements of a high temperature nuclear reactor, into which at least two nose shaped projections distributed uniformly about the circumference radially project, with each of the projections comprising a vertical cavity to contain the absorber material. The vertical cavity is located in the vicinity of the core in the area of the frontal side facing the core of each projection.

Abstract: A safety system controlling extremely unlikely disturbances in high temperature reactors in addition to and independent of the normal reactor protection systems. Accident instrumentation located in the high temperature reactor monitors certain characteristic process parameters (hot gas temperature, cold gas temperature, cooling gas pressure), for values of which clearly exceed limiting values of the reactor pressure system. The measured data is evaluated electronically and power supply to the cooling gas blowers, feed water pumps and absorber rod holding devices is interrupted if predetermined limiting values are exceeded. The power supply interruption is further actuated by temperature and pressure sensitive devices located in the nuclear reactor. A manually operated emergency switch is provided to turn off the aforementioned sensibilities.

Abstract: Process and apparatus for the separation of mixtures of substances by means of centrifugal forces, particularly for the filtration and/or sedimentation of solids from suspensions, wherein the material mixture is rotated in a cake-forming chamber until a cake of solid particles is formed. The resulting cake may thereafter be washed with a wash liquid, centrifuged and discharged from the cake-forming chamber. Discharge from the cake-forming chamber results in rearrangement of the solid particles of the cake. The cake of the rearranged particles is transferred to at least one further processing chamber and dried by centrifugation before being discharged from the apparatus.

Abstract: A closed loop feedback control for a high pressure impingement mixing system. The high pressure impingement mixing device is equipped with a circulation loop containing both a pressure sensor and a flow volume meter. Constant pressure and flow volume is achieved by continuous closed feedback loop monitoring of the pressure and flow volume to effect a change in an adjustable pump setting and servo displaceable nozzle needle. The nozzle needle adjustment allows maintaining the appropriate pressure and volume on a continuous spaces. It also allows altering component ratios and/or flow volumes during a shot in order to affect a change in material or flow characteristics of a produced part.

Abstract: An apparatus for coating both sides of boards, in particular, printed circuit boards includes a conveyor and a liquid coating station. The apparatus may include a station for feeding boards to the conveyor and particularly to a movable board holder configured to grip the circuit boards at their outer edges. The coating station located in the conveyor path coats the boards one side at a time. A board rotating station is located at one end of the conveyor and a board drying station is configured to simultaneously dry both sides of the boards.

Abstract: A screw or other machine part subject to wear is provided with a wear-resistant layer comprising: 40-70% molybdenum, 0-10% chromium, 0.5-5% boron, 0-1% zirconium, 0-1% titanium, and the remainder being nickel, cobalt or mixtures of nickel and cobalt.

Abstract: The apparatus includes a basin with a 10-50 cm depth preferably 20 cm and at least a metal halide high pressure lamp (MeH), a mercury high pressure lamp (HgH) or a mercury low pressure lamp (HgN) with filters. The lamps have a spectral range of 290 to 400 nm and are arranged to illuminate prone support surfaces. The bath tub may be made of an acid resistant material, preferably a synthetic plastic. A fixed or removable plastic prone support surface in the tub bottom and a liquid inlet and outlet for circulation of the solution for processing and storage are provided. The outlet is connected to the inlet through a filter device, a processing tank, a thermally insulated storage tank, a thermostatically controlled flow heater and a pumping device. A radiation source may be located under the prone support surface.

Abstract: A closed loop feedback control for a high pressure impingement mixing system. The high pressure impingement mixing device is equipped with a circulation loop containing both a pressure sensor and a flow volume meter. Constant pressure and flow volume is achieved by continuous closed feedback loop monitoring of the pressure and flow volume to effect a change in an adjustable pump setting and servo displaceable nozzle needle. The nozzle needle adjustment allows maintaining the appropriate pressure and volume on a continuous spaces. It also allows altering component ratios and/or flow volumes during a shot in order to affect a change in material or flow characteristics of a produced part.

Abstract: Method for marking objects by the use of memory micro-crystals, consisting in choosing one or several micro-crystals, of doping each micro-crystal, if this has not already occurred naturally, with any one of the rare earths and transitional metals, in irradiating the micro-crystal or micro-crystals with high-energy rays or particles, according to a predetermined dosage in order to trap the charge carriers, released by ionization of the atoms, while in their energetically metastable state, said process consisting also in applying a predetermined quantity of the micro-crystal or micro-crystals irradiated by said method, to at least one predetermined part of the object, and in safely recording, for the purpose of later comparison, the characteristics, implantation and conditions under which dopage and irradiation of the micro-crystal or micro-crystals took place. Application to the authentication of objects.