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| Number | Title | Issue Date |
| 8387434 | Push bench and method of manufacturing small diameter tubing The present invention involves cost effective, efficient systems and methods for sizing pipe. In an embodiment of the present invention, a pipe sizing system includes a die having an opening operable to size the pipe, a hydraulic cylinder having at least one rod att... | 03/05/2013 |
| 8146733 | Idler roll seal A contact seal to prevent contamination from fouling a conveyor idler roll, the roll generally comprising a rotatable cylinder, at least one internal bearing assembly, and a fixed axle. A disc of thermoplastic polymer or similarly resilient material is adhesively at... | 04/03/2012 |
| 7955413 | Method of producing transformation induced plasticity steels having improved castability A method for producing Transformation Induced Plasticity (TRIP) steels comprises adding a degassing step to remove hydrogen and nitrogen prior to casting, resulting in a more fluid steel that exhibits improved castability. ... | 06/07/2011 |
| 7621323 | Solid expandable tubular members formed from very low carbon steel and method A very low carbon steel alloy is provided for use in manufacturing tubular members such as oil country tubular goods. The tubular members may be radially expanded from at least twenty percent to forty percent. Sections or joints of casing formed from the steel alloy... | 11/24/2009 |
| 7621164 | Push bench and method of manufacturing small diameter tubing The present invention involves cost effective, efficient systems and methods for sizing pipe. In an embodiment of the present invention, a pipe sizing system includes a die having an opening operable to size the pipe, a hydraulic cylinder having at least one rod att... | 11/24/2009 |
| 7604844 | Method, system and apparatus for scraping a roll surface in a molten metal coating process A method is disclosed for scraping a roll surface rotating in a molten metal coating process comprising traversing a support assembly to one side, lifting the arms attached to said the assembly to a fully retracted position to disengage scraper blades from contact w... | 10/20/2009 |
| 7596848 | Method for producing bimetallic line pipe The present invention involves a system and method for producing bimetallic pipe. In one embodiment of the present invention, the method includes inserting an inner shell into an outer shell and reducing the outer shell to securely engage the inner shell by drawing ... | 10/06/2009 |
| D599119 | Sheet material | 09/01/2009 |
| 7404438 | Solid expandable tubular members formed from very low carbon steel and method A very low carbon steel alloy is provided for use in manufacturing tubular members such as oil country tubular goods. The tubular members may be radially expanded from at least twenty percent to forty percent. Sections or joints of casing formed from the steel alloy... | 07/29/2008 |
| 7341629 | Method, system and apparatus for scraping a roll surface in a molten metal coating process An apparatus for scraping the surface of a sink roll in a molten metal coating process comprises a support member having a pair of linearly movable arms supported thereon. The support member depends from a bridge structure spanning a continuous metal coating line, a... | 03/11/2008 |
| 7311789 | Dual phase steel strip suitable for galvanizing Dual phase steel sheet is made using a time/temperature cycle including a soak at about AC1+45° F. to AC1+135° F. and a hold at 850-940F, where the steel has the composition in weight percent, carbon: 0.02-0.20; aluminum: 0.010-0.150; titaniu... | 12/25/2007 |
| 7291252 | Electrocoating chrome-plated steel Steel cabinet parts and other steel objects are electrocoated in a cationic resin-containing bath. The steel objects are chromium-coated, free of phosphate and preferably free of chromium oxide. The products are not significantly subject to filiform corrosion, and t... | 11/06/2007 |
| 7225657 | Elimination of rolling mill chatter A method for eliminating the vibrational chatter in a rolling mill stand, whereby existing roll chocks are machined to allow commercially available thrusting means, including hydraulic cylinders and the accompanying fittings and tubing, to be installed directly into... | 06/05/2007 |
| 7178436 | Method of cutting carbon and alloy steel The present invention discloses a method and apparatus for controlling the load on the blade of a steel-cutting saw A programmable logic controller senses the spindle motor load current and compares it with the desired optimum operating current. Variations in hardne... | 02/20/2007 |
| 6811624 | Method for production of dual phase sheet steel Dual phase steel sheet is made using a time/temperature cycle including a soak at about 1340-1425F and a hold at 850-920F, where the steel has the composition in weight percent, carbon: 0.02-0.20; aluminum: 0.010-0.150; titanium: 0.01 max; silicon: 0.5 max; phosphor... | 11/02/2004 |
| 6673171 | Medium carbon steel sheet and strip having enhanced uniform elongation and method for production thereof A method is provided for producing medium carbon steel sheet and strip with enhanced uniform elongation for deep drawing applications. In one embodiment, a steel slab containing carbon 0.30/0.70%, manganese 0.75/2.0%, silicon up to 1.0% max., total alumin... | 01/06/2004 |
| 4695323 | High strength coke-oven mortar A high strength mortar has been developed for use with silica brick, in the construction of coke-oven heating walls. When fired to conventional coke oven temperatures of about 1100° C., the mortar develops a tensile strength within the mortar itself, and... | 09/22/1987 |
| 4692216 | Method for controlling heat input into a coke oven Method of controlling heat input into a coke oven to obtain a desired temperature of the coke mass of the oven at the time of pushing comprising (1) determine the moisture content and heat of carbonization of a sample of coal scheduled for transfer into t... | 09/08/1987 |
| 4686090 | Desulfurizing of reducing gas stream using a recycle calcium oxide system A process for producing a low-sulfur content hot reducing gas stream comprising (a) contacting a sulfur bearing hot reducing gas stream with a desulfurizing agent comprising a desulfurizing fixed bed of solid particles comprising calcium oxide to thereby ... | 08/11/1987 |
| 4683937 | Ingot mold and method of producing same A process for casting ingot molds wherein a smooth, rigidized insulative board is used to form the as cast bottom surface of the ingot mold to produce a smooth flat surface which does not require machining and to permit slow cooling and solidification so ... | 08/04/1987 |
| 4679614 | Apparatus for significantly decreasing undesired variation in the alignment of adjustable continuous caster mold walls Improvements are provided in a continuous caster mold for preventing undesired variation in the angular alignment of the narrow mold walls during casting. In one aspect, an improvement is provided in a mechanism for adjusting the spacing and angular align... | 07/14/1987 |
| 4657584 | Effect of MgO source on sinter properties A process is provided for sintering iron-bearing particulate materials in which the final sinter contains 3/5.5% MgO, yet has substantially the same strength as a low MgO limestone sinter. At least 20% of the MgO in the final sinter product must come from... | 04/14/1987 |
| 4651578 | Well pumping unit An improved oil well pumping unit has an arc latch which is remotely actuable so that a workman is not required to climb onto, or be in the immediate vicinity of the arc, in order to move the arc to an inoperative position spaced from the centerline of th... | 03/24/1987 |
| 4651802 | Attachment for connecting endwall mold face to continuous caster mold support An improvement is provided in continuous caster molds for quick disconnect of a mold wall from its spacing adjustment mechanism. A plate attached to the adjustment mechanism is aligned generally parallel to the mold wall. A pair of connections are provide... | 03/24/1987 |
| 4650502 | Pressurized gaseous aqueous ammonia separation system Systems and methods are provided for separating a first pressurized gaseous aqueous ammonia stream into a second gaseous ammonia stream having a higher ammonia concentration than the first stream and a third gaseous aqueous ammonia stream of reduced press... | 03/17/1987 |
| 4634745 | Terpolymer production Terpolymers comprising propylene and small amounts of ethylene and butene-1 are made in a two-stage process wherein a relatively high melting random terpolymer is made in a first stage and a relatively low-melting random terpolymer incorporating a higher ... | 01/06/1987 |
| 4628869 | Variable temperature waste heat recovery system A system for recovering the waste heat normally exhausted in the atmosphere by blast furnace stoves or other variable temperature process heaters. The system comprises a heat exchange apparatus located in the exhaust stack, heat transfer means for carryin... | 12/16/1986 |
| 4623530 | Crystalline magnesia-silica composites and process for producing same Novel aromatic alkylation catalysts are manufactured by an extended hydrothermal treatment of the precipitation product of a magnesium salt with sodium silicate in the presence of tetrapropylammonium bormide or related compound.... | 11/18/1986 |
| 4615375 | Continuous casting mold friction monitor A load signal representing the load between a mold and an oscillating mechanism is separated into its static offset and dynamic components. The static offset signal is compared with a free-running static offset to obtain a substantially DC signal represen... | 10/07/1986 |
| 4612120 | Axisymmetrical separator for separating solids and gas from a fluid medium A dimensionally compact centrifugal separator having no moving parts is described that is effective for separating entrained solids and gases from a liquid in order to cleanse the liquid. The internal configuration of the apparatus is such as to effective... | 09/16/1986 |
| 4609410 | Method for producing high-strength deep-drawable dual-phase steel sheets High-strength, deep-drawable, steel sheet exhibiting dual-phase properties is produced by (i) initially annealing the sheet to achieve crystallographic textures yielding high deep drawability, (ii) heating the sheet to a temperature above the A1 | 09/02/1986 |
| 4602574 | Destruction of toxic organic chemicals Toxic chemicals such as polychlorinated biphenyls and other organic wastes are destroyed by injecting them, together with oxygen, into a metal or slag bath such as is utilized in a steelmaking facility. The metal bath may be melted initially by induction ... | 07/29/1986 |
| 4599142 | Coke oven door lining A construction for the refractory lining member of a coke oven door is provided. The coke oven door lining includes a generally "U"-shaped frame with a castable refractory element formed therein. The frame is provided with a base portion and first and sec... | 07/08/1986 |
| 4597048 | Digital flow regulation of liquid-level control for a continuous casting mold In a continuous casting apparatus, the level of liquid in the mold is monitored and compared to a desired reference level. A microcomputer examines the resulting error signal and determines the amount of movement of the valve which would be appropriate to... | 06/24/1986 |
| 4596601 | High strength coke-oven mortar A high strength mortar has been developed for use with silica brick, in the construction of coke-oven heating walls. When fired to conventional coke oven temperatures of about 1100° C., the mortar develops a tensile strength within the mortar itself, and... | 06/24/1986 |
| 4594131 | Process for removing ammonia and acid gases from process streams A water purification process is described for the removal of ammonia and optionally one or more acid gases from wastewaters such as coke-plant or coal conversion wastewaters. The process involves adding alkali to these wastewaters in amounts sufficient to... | 06/10/1986 |
| 4587791 | Edge protector positioning apparatus Apparatus for positioning an edge protector to the edge of a package to be looped with strapping is provided. The apparatus includes a guide rail extending generally normal to the exposed package edge and an edge protector positioning apparatus mounted on... | 05/13/1986 |
| 4582546 | Method of pretreating cold rolled sheet to minimize annealing stickers In the box annealing of steel sheet, the tendency for adjacent wraps of the sheet to pressure weld (stick) is decreased or eliminated by passing the sheet, prior to annealing, through a rinse containing from 1,500 to 10,000 ppm of the magnesium or calcium... | 04/15/1986 |
| 4582112 | Weight-controlled casting of fully-killed steel ingots In the ingot casting of killed-steel steels, insulative walled reservoirs known as hot-tops are employed at the top of the mold to maintain a source of molten steel which can feed the shrinkage cavity that forms during solidification of the ingot. Present... | 04/15/1986 |
| 4581156 | Control of foam formation in the manufacture of wet process phosphoric acid Significant improvements in defoaming in a wet-process phosphoric acid reactor are obtained by adding to the reactor during the digestion process both a surfactant defoamer and a polyacrylamide.... | 04/08/1986 |
