Abstract: A ceramic body includes a disk-shaped mold cavity in its upper part and a slag retention chamber underneath; these chambers are interconnected by a duct extending downward from the bottom of the mold and being continued by a ceramic tube traversing centrally the retention chamber and ending near the bottom thereof. A reversal chamber is excentrically disposed under this tube end, and diametrally thereto ends the feed duct.

Abstract: Residue from dressing bauxite is mixed with NaCl and ground; polyurethane foam is ground and mixed with CaCl.sub.2 ; a silicon organic compound and quartz powder is added to one or both of the ground mixtures; the grains are embedded in bituminous material or asphalt to be used for making a surface road, being protected against frost by these salts. Specific examples and method steps are described.

Abstract: A recorder for monitoring the operation of a cardiac pacemaker and the response of the patient to the pacemaker includes a recorder module which receives a composite signal including an ECG signal, a pacemaker spike having a frequency spectrum that lies substantially at frequencies greater than the frequency band required to pass the ECG signal, and further includes artifact noise within the frequency spectrum of the pacemaker spike. The recorder module distinguishes the pacemaker spike from the artifact noise and upon recognizing the pacemaker spike, the recorder module produces a distinctive synthesized signal whose frequency spectrum lies substantially within the frequency band required to pass the ECG signal so that the synthesized signal will pass through the pre-emphasis filter that is used to reject artifact noise and will then be recorded.

Abstract: Pipes are submerged - arc seam welded with a welding wire having a relatively high nickel content (about 6%), and low carbon content (<0.08%) to obtain a seam having a ductility and toughness which is still adequate for very low temperatures.

Abstract: A device for sampling molten steel is provided with a mold cavity and an inlet path which includes a floatation-type slag separation chamber. A ceramic sieve is disposed at the outlet of the separation chamber to prevent large slag particles from passing through while trapping small slag droplets by adhesion.

Abstract: Straight walled hollow containers may be molded without taper, according to the present invention. Two mold halves, when brought together define a cavity configured to the outer wall of a hollow plastic container to be injection molded, and also an opening at one end of the cavity to enclose the stem of a core defining the inner wall of the hollow plastic container. When the core is disposed in the cavity, it is centered within the latter. Thereby a space is provied between the inner walls of the mold halves and the outer wall of the core to receive plastic material injected under high pressure through a sprue, also defined by the inner walls of the mold halves. After injection, the plastic is cooled to just below the softening point of the plastic. At this point separation of the mold halves surrounding the outer portion of the core, is commenced and a force is applied to initiate withdrawal of the core from between the mold halves.

Abstract: A blend of high and low density polyethylene and azodicarbonamid added as blowing agent is heated in an extruder to a temperature above the melting point of the high density component and fed to a shear head having a hollow rotating mandrel through which tubing is fed for depositing thereon a hose at the nozzle exit of the head. A peroxide is fed to the shear head for mixing with the polymer blend and immediately initiating crosslinking; blowing begins just prior to the depositing, the material being already crosslinked to a considerable extent.

Abstract: Two similarly dimensioned cases are preferably placed one on top of the other, with air space and electrical connections between them. The upper case has a door with a window and contains a slide-out and swing-out frame holding the indicating instrument and PC boards. The power supply is on the rear wall. The lower case has a slide-out tray, a door is hinged on the front edge, and on a horizontal axis. The tray supports the analyzer proper with incorporated preamplifiers. Both doors have sealing strips on the inside and can be bolted.

Abstract: The individual tubes are separated from each other at the end of a cable composed of a tube bundle, by means of a cap member having a neck in heat shrink fit on the cable jacket and having an end plate with sleeves through which pass groups of tubes, a plurality of further members have their respective necks heat shrunken onto the sleeves, and individual sleeves on the further members single out and separate the individual tubes of the cable, the latter sleeves being also mounted on the tubes in heat shrink fit. Further features relate to thermal insulation form stability, and pressure proofing of the construction, all destined to seal off the interior of the cable while permitting feed through of the individual tubes for physical fan-out or fan-in.

Abstract: The cross sensitivity of a two-beam infrared gas analyzer is eliminated by using two differently long cells for the measuring gas in the two beam paths and by using an interference filter at least in the beam path containing the longer cell; the filter, however, does not filter the entire beam in that path.

Abstract: Markings are placed alongside the gap of a split tube and their distance is measured downstream from the point of welding; the measuring result is used to control upsetting pressure in the weld print.

Abstract: A steel pipe with a thermoplastic cover has the coverage of a welding seam reinforced by hot air heating the cover along the plastic and extruding a strip of similar plastic thereon, followed by cold water spray cooling. The pipe is centered as to the position of the welding seam vis-a-vis the heating and extruding equipment during relative longitudinal movement.

Abstract: A tab for easy opening ends including a lifting end and an opening end and spaced side legs is improved by the use of finger means extending from the opening end towards the lifting end, the finger means including flanges which stiffen the finger. The lifting end is formed of a smooth unbroken curl of sheet material.

Abstract: An aircraft cabin is climatized by tapping air from the engine compressors and feeding it into the cabin through a loop which includes a compressor, a cooling turbine driving the compressor, and several cooling stages. A second loop, using preferably helium, includes a second compressor and a second turbine, the second compressor being driven by both turbines, and the cooled helium is in heat exchange with another cooling loop which runs through instrument compartments. Discharged cabin air is used to precool the compressed helium.

Abstract: A device for obtaining a culture sample from a particular location in a body passage while avoiding contamination of the sample by materials located elsewhere in the body passage includes a stiff flexible tube. A sleeve of pliant waterproof material surrounds the tube and the distal end of the sleeve is tucked into the distal end of the tube. A bag of pliant waterproof material is bonded to the outside surface of the sleeve to form a waterproof seal extending all around the sleeve, the bag enclosing the distal end of the tube and the distal end of the sleeve. The bag has a limited burst strength and is broken after the distal end has been emplaced at a particular pre-sampling level to expose the sterile sleeve that was tucked into the tube. As the tube is inserted a short distance further, the portion of the sleeve that was tucked into the tube everts out of the distal end of the tube to form a sterile curtain surrounding the distal end of the tube and protecting it from contamination.

Abstract: A process for producing a fruit preparation from a natural fruit juice, the process comprises removing water from the juice by flowing the juice on a heated, reciprocable, inclinable surface to reduce the water content to 10 to 25% by volume. A crystalline modifying agent is then added to the product. The modifying agent and the product are then blended while heating them. The heating and blending is continued until the water content of the product is in the range of 1 to 15% by volume. An apparatus for producing the preparation is described. The apparatus has a concentrator pivotably mounted at about its center. An end of the vessel can be raised and lowered to reciprocate the vessel about the pivotable mount. The vessel is heated and has a closable outlet at each end. Extractors for vapor produced from the fruit juice heated in the first vessel are provided and blender means to blend the material produced on the concentrator with an added material.