Patents Assigned to Stahls' SCS
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Patent number: 4538546Abstract: A body of steel heated to a high temperature of at least 300.degree. C., e.g. a slab coming from a hot-rolling stage, is marked with alphanumerical characters by training a jet of molten metallic material, preferably consisting at least predominantly of aluminum or copper, onto a face of that body from a nozzle which is two-dimensionally displaceable parallel to that face under the control of a programmable microprocessor. The nozzle is part of a working head to which the marking material is fed in the form of a wire whose leading end is atomized by an electric arc generated between that end and an adjoining counterelectrode. The working head is mounted on a carriage movable toward and away from the steel body to be marked.Type: GrantFiled: November 30, 1983Date of Patent: September 3, 1985Assignee: INTERO-Stahl - und Maschinenbau Schmitz GmbH & Co. KGInventor: Dieter Baron
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Patent number: 4525463Abstract: A spout-filling mass which is retained in place by a slider in the pouring spout of a metal-casting ladle consists essentially of 35 to 65% by weight chromite, (chromium ore with 42 to 45% Cr.sub.2 O.sub.3), 3 to 25% by weight carbon and the balance quartz sand. The mass, which fills the cylindrical portion of the spout, is formed into a pile on the floor of the ladle above the spout and upon contact with the molten metal fuses into a thin shell which, upon movement of the slider to bring its opening into registry with the spout, is ruptured by the molten metal after the underlying support for the shell is discharged through the spout.Type: GrantFiled: November 3, 1982Date of Patent: June 25, 1985Assignees: Heinz Dislich, Krupp Stahl AktiengesellschaftInventors: Heinz Dislich, Horst Richter
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Patent number: 4504214Abstract: A control valve for a resonant burner having a burner space for receiving active substance through a conduit with an atomizing nozzle discharging into the space is disclosed. When the valve is shut off to terminate flow of the active substance through the valve to the burner conduit, a spring action in the valve tends to withdraw the active substance from the conduit by creating a suction effect therein.Type: GrantFiled: December 29, 1981Date of Patent: March 12, 1985Assignee: Karl Heinz StahlInventors: Karl-Heinz Stahl, Fritz Fend
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Patent number: 4496183Abstract: A rail wheel has in one of its rim surfaces, preferably the inner one, a circumferential undercut groove. Vibration-damping elements are connected to the wheel by means of screws which either engage in the undercut groove via appropriately shaped heads, or are threaded into wedges lodged in the groove.Type: GrantFiled: August 17, 1981Date of Patent: January 29, 1985Assignee: Krupp Stahl AktiengesellschaftInventors: Willi Kasper, Helmut Licht, Erwin Raquet, Jurgen Schneider
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Patent number: 4481638Abstract: The invention relates to an electric arc furnace having three electrodes arranged in a triangle and wherein the electrodes are held by parallel support arms for reducing electrode breakages. At least the support arm of the electrode most susceptible to breakage is provided with a resonance absorber whose natural frequency is tuned to the frequency of the support arm/electrode system for rocking vibrations in the plane of the support arm/electrode.Type: GrantFiled: March 12, 1982Date of Patent: November 6, 1984Assignee: Krupp Stahl AGInventor: Erwin Raquet
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Patent number: 4479602Abstract: The disclosure relates to an apparatus for the manufacture of hollow cylindrical bodies by deposit welding, consisting of a supporting body rotatably mounted on bearings at both ends and a hollow cylindrical basic body concentric to the supporting body being supported by said supporting body means of circumferentially arranged radially spacing members. According to the disclosure the spacing members are elastically flexible.Type: GrantFiled: August 4, 1981Date of Patent: October 30, 1984Assignee: Thyssen Stahl AktiengesellschaftInventors: Jos/e/ Fernandez, J/u/ rgen Herm, Heinz Krakow, Harald Tomsen, Ernst Wortmann, deceased
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Patent number: 4441749Abstract: An elevator for casing pullers with elevator links adapted for motorized opening and for the lateral approach to a casing which is to be pulled. One of the elevator links is constructed as a hook, into which a locking bolt of a power jack can be pivoted, which said power jack is copivotingly secured on the second movable elevator link and closes the elevator by retraction of the locking bolt.Type: GrantFiled: August 11, 1981Date of Patent: April 10, 1984Assignee: Stahl- und Apparatebau Hans Leffer GmbHInventors: Kurt Blaschke, Josef Roob
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Patent number: 4422902Abstract: A coke-oven door for use in combination with a coke-oven chamber having an upright doorjamb has a door panel whose periphery is complementary to the doorjamb and which is provided with a seal extending around that periphery between the same and the doorjamb. A plug with a heat-insulating outer wall is carried on this panel within the seal and projects through the doorjamb into the chamber. This plug is formed with a vertically extending and upwardly open passage bounded by a metallic inner wall having gaps by which gases produced during coking adjacent the plug enter the passage on their way to a flue, exchanging heat through the metallic wall with the charge in the oven and thereby aiding the coking operation.Type: GrantFiled: September 18, 1980Date of Patent: December 27, 1983Assignee: WSW Stahl-Und Wasserbau GmbHInventors: Dieter Breidenbach, Wilhelm Mosebach
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Patent number: 4414072Abstract: A coking chamber of a coke-oven battery, with heated longitudinal walls interconnected by a doorjamb at each end, is closed by a pair of doors sealingly fitting into these doorjambs. Each door has a vertical channel separated from the exterior by an outer wall with a heat-insulating layer and from the interior of the chamber by an upright metal plate facilitating thermal conduction therebetween. The channel is accessible at various levels or over its entire length to gases evolving from a charge inside the chamber which, in rising toward the roof of the chamber, retransmit some of their heat through the metal plate to the charge for enabling substantially uniform heating thereof from four sides.Type: GrantFiled: December 18, 1981Date of Patent: November 8, 1983Assignee: WSW Stahl-und Wasserbau GmbHInventors: Dieter Breidenbach, Wilhelm Mosebach
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Patent number: 4411524Abstract: An apparatus for the spectrometric analysis of the chemical composition of metallic parts comprising a probe designed to be placed on the part and having a device for vaporizing the part. Means is provided for spacing the device from the part and also means for sensing the radiation emitted by the part vaporized by the device. A protective gas preferably continuously is admitted into the vicinity of the device and of the sensing means. Preferably, the probe is portable, hand-held, and enables outdoors the rapid determination of metals, particularly their carbon content, including those whose wavelength region is below 250 nm.Type: GrantFiled: June 15, 1981Date of Patent: October 25, 1983Assignee: Krup Stahl, A.G.Inventors: Karl J. Kremer, Jochen Brauner, Klaus-Dieter Glaubitz, Helmut Eckstein, Josef Bruggemann
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Patent number: 4409023Abstract: A process and a device are described for directly making liquid pig-iron from coarse iron ore. Hot sponge-iron particles are directly conveyed by a worm conveyor (17) through a communicating passage (19) from a direct-reduction blast-furnace shaft (2) into a smelter-gasifier (1), and a stream (24) of gas flows, after cooling to below 950.degree. C., in counter-current to the sponge-iron particles, from the smelter-gasifier (1) to the blast-furnace shaft (2), this gas stream having a volumetric flow-rate not more than 30 percent of the total reduction-gas flow reaching the blast-furnace shaft (FIG. 1).Type: GrantFiled: September 10, 1981Date of Patent: October 11, 1983Assignees: Korf-Stahl AG, Voest-Alpine AGInventors: Ralph Weber, Bernt Rollinger, Rolf Hauk, Michael Nagl, Bernhard Rinner
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Patent number: 4396421Abstract: In a method of, and arrangement for, producing molten pig iron or steel pre-material iron-oxide-containing raw-material particles are top-charged into a fluidized bed formed of carbon particles and an oxygen-containing carrier gas. When passing the fluidized bed, the raw-material particles are heated, reduced and smolten. In order to achieve a better utilization of energy with such a method, i.e. to considerably lower the total energy input, additional energy is supplied to the fluidized bed by plasma heating.Type: GrantFiled: April 2, 1981Date of Patent: August 2, 1983Assignees: Voest-Alpine Aktiengesellschaft, Korf-Stahl AktiengesellschaftInventors: Kurt Stift, Walter Lugscheider
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Patent number: 4393785Abstract: To permit attachment of a suspended track without drilling of holes lfor installation and connection to support elements (25), the track has an upper hollow structural section (2), for example in essentially semi-circular shape with depending vertical sections (10), a similar lower hollow structural section (2) joined by a connecting web (3), the sections in the web are unitary, the web being of generally horizontal C-shape in cross section, with a generally vertical back portion (11), mutually converging or approaching forward portions (5) which are bent over themselves to form diverging wing portions (6) leaving a groove-like gap (4) therebetween, the ends (7) of the portions (5) and the diverging wing portions (6). Hanger elements (25) can be longitudinally positioned by clamping the hanger elements against internally positioned clamping bars or plates (27), permitting longitudinal alignment by relative sliding of the clamping bars within the C-shaped chamber.Type: GrantFiled: March 25, 1981Date of Patent: July 19, 1983Assignee: Firma R. Stahl GmbH & Co.Inventor: Franz Hortnagel
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Patent number: 4392637Abstract: Metallurgical melting apparatus with a blow-nozzle or burner capable of swivelling in different directions. The blow-nozzle or burner comprises at least one tube. The nozzle-head (12) has a bulge, in the example described a spherical calotte (13), which is retained between two ring-seats (14 and 15) (the FIGURE).Type: GrantFiled: September 10, 1981Date of Patent: July 12, 1983Assignees: Korf-Stahl AG, Voest-Alpine AGInventors: Ralph Weber, Bernt Rollinger, Michael Nagl, Bernhard Rinner
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Patent number: 4375714Abstract: A releasable locking mechanism for safety belts including a lock tongue connected with the end of one belt member and a casing connected with the end of a second belt member operates with a locking bolt slideably guided on a support surface to engage and disengage a stop surface on the lock tongue for locking and releasing the safety belt. A spring loaded release member urges the locking bolt along the support surface to release the lock tongue from locking engagement therewith. The support surface is defined on the casing to extend transversely relative to a planar slot within which the lock tongue is inserted and the stop surfaces on the lock tongue and the support surface upon which the locking bolt slides are arranged to define therebetween an acute angle.Type: GrantFiled: June 17, 1980Date of Patent: March 8, 1983Assignee: Carl Stahl GmbH & Co.Inventor: Heinz Korger
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Patent number: 4361094Abstract: An amusement ride has rails defining a longitudinal travel direction along which a car is displaceable. A longitudinally extending drive member secured to this car is engageable by drive members which rotate to displace the car along the rails in the longitudinal direction. This member comprises at least two generally parallel, longitudinally extending, and vertically spaced chains each formed of a longitudinal succession of links and a plurality of longitudinally succeeding rigid segments each having a pair of transversely bolted-together halves flanking the chains. The halves of each segment are complementarily formed to and encase a respective plurality of the chain links.Type: GrantFiled: March 18, 1981Date of Patent: November 30, 1982Assignee: Firma Anton Schwarzkopf Stahl- und FahrzeugbauInventor: Anton Schwarzkopf
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Patent number: 4350589Abstract: A water-aeration apparatus has a tubular frame defining a substantially closed chamber and capable of floating and carrying a load when the chamber is filled with air. Flood and bleed valves are provided at respective underwater water intakes and above-water air exhausts for introducing water into the chamber and for withdrawing air therefrom. A double-walled conduit is supported on the frame and has an outer substantially gas-impervious wall and, spaced inwardly therefrom, an inner gas-pervious wall. The conduit is inclined to the horizontal when the frame is floating and has an upper conduit end and a lower conduit end. A pump carried on the frame has an air intake above the water when the frame is floating and an air output at the lower end and directed toward the upper end.Type: GrantFiled: July 9, 1981Date of Patent: September 21, 1982Assignee: WSW Stahl- und Wasserbau GmbHInventor: Wilhelm Stog
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Patent number: 4335556Abstract: The frame girder for underground drift construction comprises three or more retainer bars (3a, 3b) whose cross sections form a polygon, the retainer bars being affixed to one another by stiffener elements (4). Each stiffener element (4) comprises a number of cross struts (5) bent in their centers and inclined with respect to the retainer bars. The outer ends (9) of the struts (5) are each attached to one of the retainer bars. The stiffener element may be formed symmetrically with respect to a central plane extending obliquely to the retainer bars. The frame girder may be made from conventional round irons. It resists bending, torsion and buckling at very high loads, and no undesirable injection shadows are produced during concreting.Type: GrantFiled: April 15, 1980Date of Patent: June 22, 1982Assignee: Pantex-Stahl AGInventor: Edgar Arnold
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Patent number: 4327906Abstract: A sheet separating apparatus has a lifting device and at least one suction device. The suction devices receive a sheet from a stack, and with the sheet engaged with the suction devices, are lifted away from the stack by the lifting device. The suction devices are connected to a vacuum source(s) and the lifting device is connected either to the vacuum source, or one of the vacuum sources, or to a different vacuum source or a positive pressure source. In either case the vacuum source(s) acts through the suction devices to produce the engagement of the sheet and suction devices, and this engagement in turn produces a pressure drop in the suction devices which leads to activation of the lifting device to lift the suction devices.Type: GrantFiled: June 11, 1980Date of Patent: May 4, 1982Assignee: STAHL GmbH & Co.Inventors: Eckhard Frohlich, Gunter Mattka
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Patent number: 4317677Abstract: A process for the production of molten crude iron and reduction gas is described wherein the molten iron and gas are formed in a smelting gasifier, to which is introduced at the upper portion thereof preheated sponge iron of particle size between 3 mm and 30 mm and coal to form a fluidized bed, and an oxygen-containing gas at the lower portion thereof, and controlling the ratio of oxygen-containing gas and coal to maintain a high temperature zone in the lower portion of the gasifier and a lower temperature zone in the upper portion thereof, the oxygen-containing gas being introduced substantially immediately above the resulting melt which is formed at the bottom of the gasifier.Type: GrantFiled: October 3, 1979Date of Patent: March 2, 1982Assignee: Korf-Stahl AG.Inventors: Ralph Weber, Emil Elsner, Walter Maschlanka, Bernt Rollinger, Gerhard Sanders