| Patent Number |
Title Of Patent |
Date Issued |
| 4480821 |
Apparatus for performing a work function on a tubular workpiece |
November 6, 1984 |
| An apparatus for performing a work function on a tubular workpiece includes a support frame movable along an X-axis, a bracket on the frame movable toward and away from the workpiece along a Z-axis, a support arm mounted on the bracket for movement about a swival axis lying in the Z-dire |
| 4475581 |
Method and apparatus for fabricating glad ingots |
October 9, 1984 |
| A method of and apparatus for fabricating clad ingots or clad slabs includes a hollow body which corresponds to the dimensions of a finished slab and which has at least one side plate of cladding material and other thinner side sheets forming an upright tubular hollow body which is i |
| 4448620 |
Method and apparatus for the injection molding and vulcanization of vehicle tires |
May 15, 1984 |
| A vehicle tire crown portion 10 including a tread 11 is injection molded and prevulcanized in a closed annular mold cavity 17 defined by a segmented outer mold 16 clamped together by a locking ring 22 and a segmented core 19 pressed against the outer mold by upper and lower pressure |
| 4444612 |
Method and apparatus for the injection molding and vulcanization of vehicle tires |
April 24, 1984 |
| A vehicle tire crown portion 10 including a tread 11 is injection molded and prevulcanized in a closed annular mold cavity 17 defined by a segmented outer mold 16 clamped together by a locking ring 22 and a segmented core 19 pressed against the outer mold by upper and lower pressure |
| 4410478 |
Method for making two moldings and combining them to make a composite product |
October 18, 1983 |
| Composite moulded rubber or plastic articles, each comprising two distinct parts separately formed by injection moulding of different materials and subsequently joined together by vulcanizing or the like, are produced in a dual purpose apparatus that simultaneously moulds two separate pa |
| 4375982 |
Method for purifying a dust-containing hot gas, more particularly coal gas produced from coal fe |
March 8, 1983 |
| Coal gas produced in an iron bath reactor during the gasification of coal is first cooled down in a first cooling step to a temperature of, preferably, 300.degree. C., and is subsequently purified at this temperature in a first electrofilter, then cooled down in a second cooling step |
| 4365478 |
Support for a spherical tank |
December 28, 1982 |
| The support has a filling of insulating concrete which fills the space between the foundation slab and sand support layer. A cold sink formed of horizontal pipes laid in the main wind direction is encased in a middle region of the support. An impermeable film is placed over the cold sink |
| 4357160 |
Process for improving the use of heat in steel production from solid iron material |
November 2, 1982 |
| A method of heating solid, iron-containing materials in a steel-making converter which includes one or more injection nozzles in a lower nozzle plane and one or more injection nozzles in an upper nozzle plane, the nozzles in each plane being capable of supplying carbonaceous fuels and/or |
| 4346903 |
High-pressure seal in piston |
August 31, 1982 |
| A high-pressure seal having a dynamic seal ring and a static seal ring supported by a backup ring is improved upon such that support ring is a one-piece construction having sealing chambers respectively defined together with the bore wall of the cylinder with the piston recess for the |
| 4344601 |
Mold apparatus with elastic clamping means |
August 17, 1982 |
| Mold clamping forces are provided by mounting the mold halves between spaced crossheads connected by elastically deformable rods of tensile steel. The crossheads are pulled slightly apart by hydraulic cylinders to expand and tension the rods, and the prepared molds are then inserted |
| 4343614 |
Drive sprocket wheel |
August 10, 1982 |
| A drive sprocket wheel of the type having drive chain link receiving pockets formed between the sprocket teeth and a circumferential groove dividing each tooth into a pair of tooth sections with the outer tips at the flanks or sides thereof being cupped for the reception of the horiz |
| 4315772 |
Process for steel production and converter for carrying out the process |
February 16, 1982 |
| A process for the production of steel from a quantity of charge material such as iron scrap, iron sponge, or other essentially metallic iron carriers, makes use of a bottom-blowing converter. Nozzles are provided in the bottom area of the converter and extend into a sump. In order to avo |
| 4293246 |
Mine roof support structure |
October 6, 1981 |
| A mine roof support structure includes a floor skid, a supporting shield pivotally connected thereto by a pair of rocker arms forming a lemniscate guide, a roof cap pivotally connected at a roof cap joint to the shield, and hydraulic props supporting the roof cap. A hydraulic actuator is |
| 4216876 |
Pressure operated coupler |
August 12, 1980 |
| A coupler for use in clamping down a lid over a pressure vessel has a pair of clamping jaws movable toward and away from one another respectively between clamping and unclamping positions. The cylinder of a pressure-operated piston and cylinder unit is pivotally connected to support |
| 4195048 |
Compensation for differing heights of different molds clamped between the mold-clamping plates o |
March 25, 1980 |
| An absolute-coded angular position indicator coupled to the shiftable one of two mold-clamping plates, produces a position signal indicating the position of the shiftable plate. This signal is applied to one input of a subtractor, whose output signal is displayed on a numerical display. |
| 4159918 |
Method of manufacturing a compound steel material of a high corrosion resistance |
July 3, 1979 |
| A compound steel material of high corrosion resistance is manufactured by alloying a carbon steel carrier material having a carbon content of at most 0.20C and of at least 0.04C with a carbide and nitride forming substance, compounding the alloyed carrier material with a ferritic chr |
| 4120696 |
Process for the production of steel |
October 17, 1978 |
| A charge including scrap, sponge iron and ferrous metals is admitted into the top of a vertically arranged melting column and descends through the latter by gravity. The charge is melted by directing a flame against the leading end thereof and the melt flows through an outlet at the bott |
| 4120218 |
Arrangement for threading bolts into and out of tapped bores of reactor vessels |
October 17, 1978 |
| An arrangement for threading connecting elements, particularly threading bolts equipped with nuts threaded thereon, into and out of tapped bores of a reactor vessel to attach a lid to, and detach the same from the same includes a carrier ring which is supported on the lid during the thre |
| 4111556 |
Control system for alloy tester |
September 5, 1978 |
| A workpiece is positioned in contact with a contact electrode and spaced by a gap from a counter electrode. A unipolar electrical pulse is passed across this gap during a first time period. Thereafter during a second time period the light from the spark drawn across the gap is diffracted |
| 4110108 |
Method of producing cast iron |
August 29, 1978 |
| A charge of iron-containing metallic substance is melted in a melting vessel, and the molten metallic substance is passed through a body of carbonaceous material contained in a treating container for the metallic substance to be enriched with carbon. The treating container is gas-tig |
| 4102573 |
Electrode for a spectro-analytical arrangement |
July 25, 1978 |
| An electrode for a spectro-analytical arrangement is of a substance consisting of carbonaceous and metallic components so that an envelope of reducing atmosphere surrounds an electric spark discharge generated between an electrode and a metallic body the composition of the material o |
| 4097028 |
Method of melting and apparatus therefor |
June 27, 1978 |
| A charge is admitted into a shaft furnace so as to form a charge column therein. The lower end of the column is melted with a flame and the charge moves downwardly by gravity as melting proceeds. The flame is generated by admitting one or more streams of oxygen and one or more streams of |
| 4083715 |
Smelting plant and method |
April 11, 1978 |
| Iron-containing materials are loaded into the top of a shaft furnace to form therein an upright column of the materials. A burner forms a flame above the floor of the furnace to heat the base of the column and thereby melt the materials at the base of the column into a liquefied-iron mel |
| 4074936 |
Method and apparatus for analyzing a composition of an alloy |
February 21, 1978 |
| An alloy to be tested is formed of a basis metal and a plurality of alloying elements. A diffraction spectrum having lines corresponding to the basis metal and to each of the alloying elements is generated from the alloy by sparking and electrical signals each having an intensity pro |
| 4070139 |
Molding machine |
January 24, 1978 |
| A molding machine has a feed screw arrangement which plasticizes a material and which injects the plasticized material into a mold. The feed screw arrangement includes an input shaft which is mounted in a housing for rotation relative thereto and for axial displacement with and relative |
| 4066444 |
Process for deoxidizing steel by means of molten aluminum |
January 3, 1978 |
| Molten steel is killed by passing molten aluminum under pressure below the surface of the steel melt through a lance heated to the melting point of the aluminum. |
| 4063782 |
Long wall mining apparatus guide structure |
December 20, 1977 |
| An elongated conveyor is adapted to extend along a mine face in an underground mine gallery. A mining machine, such as a coal planer or the like is reciprocably arranged in the space between the mine face and the conveyor and has a bottom plate sliding on the sole of the mine gallery |
| 4057006 |
Valve plate arrangement for hydrostatic piston machines |
November 8, 1977 |
| An axial piston machine of the swash plate type includes a valve plate provided in a front face thereof with control openings which communicate at opposite ends through bores with the rear face of the valve plate. A plurality of shallow pockets, respectively forming hydrostatic bearings, |
| 4056941 |
Mine roof support for an underground mine gallery |
November 8, 1977 |
| A mine roof support for an underground mine gallery comprises a sole plate adapted to rest on the floor of the mine gallery, a front shield having a front end directed toward the mine face, a rear shield pivotedly connected at one end to the other end of the front shield and projecting r |
| 4050683 |
Smelting plant and method |
September 27, 1977 |
| Iron-containing materials are loaded into the top of a shaft furnace to form therein an upright column of the materials. A burner forms a flame above the floor of the furnace to heat the base of the column and thereby melt the materials at the base of the column into a liquefied-iron mel |
| 4049502 |
Method of and apparatus for distilling of liquids |
September 20, 1977 |
| The steam which develops during water cooling of a furnace is withdrawn from the cooling system of the furnace, introduced into a distillation plant wherein it is subjected to at least partial condensation, and the thus-obtained condensate is recirculated into the cooling system of the |
| 4042223 |
Arrangement for and a method of introducing particulate material into molten baths |
August 16, 1977 |
| A suspension of a particulate material in a carrier medium is introduced into a molten bath through a lance which has an inlet port, an outlet port and a passage communicating the inlet port with the outlet port. The flow-through cross-sectional area of the outlet port is smaller than th |
| 4041715 |
Pit prop with liftable front end |
August 16, 1977 |
| A pit prop has a floor-engaging foot, at least one arm pivoted at the rear of this foot and extending forwardly, a roof-engaging shield carried at the front end of this arm, and at least one ram extending vertically between the arm and the foot for pressing the shield against the roof an |
| 4037963 |
Spark-discharge apparatus with ground detection safety circuit |
July 26, 1977 |
| A spark discharge test apparatus has a holder electrode conductively engageable with a workpiece, a counter electrode adapted to be spaced by a gap from the workpiece while it is in contact with the holder electrode, a power supply including a closable switch and connected across the |
| 4037962 |
Apparatus for the spectral analysis of materials |
July 26, 1977 |
| An apparatus for spectroscopically analyzing the composition of a workpiece comprises a support on which is mounted a sleeve having an open end engageable with the surface of the workpiece and formed with a laterally open cutout. An electrode is mounted on the support and has an electrod |
| 4036483 |
Blast-furnace lining arrangement |
July 19, 1977 |
| An arrangement for lining a blast furnace of varying inner dimensions includes a working platform which can be adjusted in its transverse dimensions to the inner dimensions of the blast furnace at any particular elevation of the same. The working platform is lifted to different eleva |
| 4032277 |
Injection molding machine with hydraulically operated closure device |
June 28, 1977 |
| Two halves of a split mold of an injection molding machine are respectively mounted on a stationary plate and a movable plate guided on guide rods projecting from the stationary plate for movement toward and away from the latter. A guide plate, likewise guided on said guide rods, is conn |
| 4031309 |
Arrangement for producing steel |
June 21, 1977 |
| An electric furnace has an inlet opening for introduction of starting materials in the upper region thereof. A pre-melting vessel is arranged above the furnace and has a discharge opening above and in communication with the inlet opening of the furnace. The bottom portion of the furnace |
| 4025266 |
Injection molding machine |
May 24, 1977 |
| An injection molding machine includes a stationary frame having a pair of spaced upright stationary plates which guide rods of a movable frame which includes, at opposite ends of the rods projecting beyond the stationary plates, a pair of movable plates. One of the stationary plates and |
| 4025117 |
Coal planer |
May 24, 1977 |
| A coal planer for use in an underground mine gallery comprises a central unit, a pair of loading heads arranged spaced from and to opposite sides of the central unit and a pair of intermediate units respectively located between the central unit and the loading heads and linked to the lat |
| 4019845 |
Control system for injection-molding machine |
April 26, 1977 |
| An injection-molding machine has a drive ram with a pressurizable chamber that can be connected either to the high-pressure side or the low-pressure side of a source of fluid under pressure. A control system operating this machine has a pressure-reducing valve with an inlet port connecte |
| 4012914 |
Mine roof support |
March 22, 1977 |
| A mine roof support comprises a support member adapted to rest on the floor of a mine gallery, a first shield projecting upwardly from the rear end of the support member, a second shield pivotally attached at its lower end to the upper end of the first shield, an expandable and contracta |
| 4012226 |
Process for steel production |
March 15, 1977 |
| A charge of ore, pellets, sinter and the like is admitted into the top of a shaft furnace. In the upper region of the furnace, there are provided inlets through which a reducing gas is introduced into the furnace. Direct reduction of the charge takes place in the upper region of the furn |
| 4010528 |
Multi-partite guide roll |
March 8, 1977 |
| A multi-partite guide roll which is especially usable in continuous casting installations has a plurality of axially arrayed discrete roll sections which are connected by stems so that they are compelled to rotate jointly about a common axis. The stems may either be provided at one axial |
| 4002464 |
Method of and apparatus for transporting of metal fibers |
January 11, 1977 |
| Metal fibers are produced in a magnetic field by generating magnetic flux lines which extend normal to a planar supporting surface located in an enclosed space. Metallic substances are fed into the enclosed space for travel lengthwise of the flux lines and normal to the supporting surfac |
| 3999923 |
Injection-molding apparatus |
December 28, 1976 |
| An injection-molding apparatus for making ceramic moldings has a mold provided with a mold cavity, a structure formed with a passage which communicates with the mold cavity, and an injecting arrangement for injecting the molding material via the passage into the cavity. The injecting |
| 3990251 |
Excavation roof support |
November 9, 1976 |
| An advancing excavation roof support has a base and a shield assembly above the base. The base has two base portions which are spaced from one another at its end which faces toward the face of the excavation, and a lifting member is mounted between the two base portions for pivoting abou |
| 3986865 |
Process for producing steel |
October 19, 1976 |
| A charge consisting of scrap, sponge iron, pellets and the like is admitted into a vertically arranged melting chamber so as to form a column therein. A burner lance generates a flame which melts the column from below so as to produce a melt and an FeO slag. A transportable and tiltable |
| 3982926 |
Method for melting charges |
September 28, 1976 |
| A charge consisting of scrap, sponge iron, pellets and the like is admitted into a vertically arranged melting chamber and forms a column therein. The leading end of the column is melted with an annular flame generated by means of an annular burner or a plurality of burners arranged |
| 3965744 |
Equipment for compensating for sensor variations |
June 29, 1976 |
| The output of the sensor whose variations are to be compensated is applied to one input of a DC amplifier whose other input is connected to an analog storage. The output of the DC amplifier is applied to a voltage-controlled oscillator whose frequency varies as a function of the voltage |
