Did You Know...
...that the video game, Pong, was invented by a guy who graduated at the bottom of his engineering class? Nolan Bushnell spent more time running the games at a local amusement park than he did on his studies at the University of Utah. His dreams of working for Disney's amusement empire were dashed when the company wouldn't hire him. Taking a boring job, Nolan daydreamed about electronic versions of popular games. He invented Pong, the first video game, and went on to found Atari Co.
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| Number | Title | Issue Date |
| 7959708 | Injection method for inert gas A method and apparatus for forming internally shrouded supersonic coherent jets comprising an inert gas, such as pure argon and argon/oxygen mixtures. This method and apparatus can be employed to produce low-carbon steels with a top lance in basic oxygen steelmaking... | 06/14/2011 |
| 7452401 | Oxygen injection method A method of injecting oxygen into a melt located within a metallurgical furnace having a heated furnace atmosphere in which oxygen and fuel is injected into 1 or more nozzles having passageways of converging-diverging configuration under choked flow conditions to pr... | 11/18/2008 |
| 7425230 | Method and device for producing pig iron and/or pig iron intermediate products Apparatus and process for producing metal products, in which a metal-containing charge material is melted in a melting unit, and a working gas, in particular an at least partially reducing working gas, is additionally produced in the melting unit. The working gas pr... | 09/16/2008 |
| 7143806 | Fine particle generating apparatus casting apparatus and casting method A fine metal particle producing mechanism has a metal holder for housing a body of magnesium, a tube for supplying an argon gas to the body of magnesium, an argon gas flow rate controller for controlling a rate at which the argon gas is supplied to the tube, and an ... | 12/05/2006 |
| 7101413 | Method of applying flux to molten metal A method of applying flux to molten metal. A heat insulating shell comprises a porous ceramic fibrous refractory material. The shell includes an opening therein. A fluxing material is poured into the shell through the opening and is bonded thereto. The shell with th... | 09/05/2006 |
| 7052661 | Method for abatement of mercury emissions from combustion gases A process for removing mercury from a feed of coal, heavy oil or other mercury contaminated material is disclosed. The feed is thermally decomposed, preferably within, or above, a molten metal bath under reducing conditions, to produce a vapor product and non-vapor ... | 05/30/2006 |
| 6802887 | Method and device for feeding a gas to a metallurgical vessel A method is for feeding a gas into a metallurgical vessel having a condensable and/or evaporable component entrained by the gas. The gas is fed to the metallurgical vessel via one or more gas supply means. According to the method, if there are a number of the gas su... | 10/12/2004 |
| 6579340 | Fume dust suppression during pouring of molten metal, and apparatus Fume dust is prevented when molten metal is poured into a vessel, and water spray of water mist is introduced into the vessel or onto the molten metal, creating a reduced level of oxygen concentration of about 12% by volume, preferably about 8% by volume,... | 06/17/2003 |
| 6488743 | Metal melt treatment equipment Equipment for the treatment of a liquid such as a metal melt has one or more rotors (5) for the supply of gas and/or particulate material to the liquid in a reaction chamber (1). The reaction chamber (1) is closed and has an inlet (3) and an outlet (13) a... | 12/03/2002 |
| 6487905 | Method and apparatus for detecting molten metal level in container for melting metallic material Upward variations of a molten metal level in a container for melting metallic material shall be carried out by detecting variations of a liquid level inside a detector connected to a gas-pipeline, wherein a rise in the pipeline pressure causes the liquid ... | 12/03/2002 |
| 5868817 | Process for producing steel by converter The present invention provides a process for efficiently dephosphorizing, dephosphorizing and decarbonizing, or desulfurizing, dephosphorizing and decarbonizing a hot metal in a converter. The amount of flux to be charged and the amount of bottom-blown ga... | 02/09/1999 |
| 5679132 | Method and system for injection of a vaporizable material into a molten bath A method and apparatus are disclosed for injecting vaporizable material, such as a vaporizable waste, into a molten bath. A gas is injected into the molten bath at a rate which is sufficient to cause the gas and the molten bath to form a gaseous dispersio... | 10/21/1997 |
| 5674309 | Method and apparatus for controlled turbulent purging of open containers A method and apparatus for purging air from the interior of a container in which purge gas is supplied to the interior of the container from one or more injectors in a turbulent jet flow having a modified Reynolds number Re' of less than 14,000 and the pu... | 10/07/1997 |
| 5436210 | Method and apparatus for injection of a liquid waste into a molten bath A method and apparatus are disclosed for injecting liquids into a molten bath. The method includes forming a suitable liquid dispersion of a liquid phase disposed in a gas phase. The liquid phase has a ratio of surface area to volume which is sufficient t... | 07/25/1995 |
| 5417740 | Method for producing steel A method of steelmaking in an at least partially refractory lined furnace. The process includes the steps of retaining a portion of a hot liquid slag from a previous heat, and altering the retained slag with basic slag forming material to increase its bas... | 05/23/1995 |
| 5378261 | Method for producing steel A steel making process is disclosed that utilizes solid ferrous metallic material as a substantial part of the metallic charge and uses heat released by combustion of two different types of carbonaceous materials and steel scrap that have been strategical... | 01/03/1995 |
| 5374296 | Lance carriage An elongate lance (4) is raised or lowered by means of a carnage (7) which is guided by vertical channels (8). The lance has lateral projections (18) whereby it is supported in a cradle (17) mounted to carriage (7) via springs (29). The apparatus permits ... | 12/20/1994 |
| 5374297 | Lance for fuel and oxygen injection into smelting or refining furnace A furnace 10 for smelting iron ore and/or refining molten iron 20 is equipped with an overhead pneumatic lance 40, through which a center stream of particulate coal 53 is ejected at high velocity into a slag layer 30. An annular stream of nitrogen or argo... | 12/20/1994 |
| 5366538 | Process for the production of a metal melt In a process for the production of a metal melt in a metallurgical vessel, the filter dusts incurring in producing the metal melt are to be processed to charging substances without causing a load on the environment and without great expenditures. This is ... | 11/22/1994 |
| 5366537 | Fuel and oxygen addition for metal smelting or refining process A furnace 10 for smelting iron ore and/or refining molten iron 20 is equipped with an overhead pneumatic lance 40, through which a center stream of particulate coal 53 is ejected at high velocity into a slag layer 30. An annular stream of nitrogen or argo... | 11/22/1994 |
| 5336296 | Method of obtaining steel in a liquid bath and the device to carry it out The proposed method is characterized in that the liquid bath is constituted by the melt of low carbon steel and molten slag. Oxidation and reducing zones are created through which, along a closed path on the surface of the molten low-carbon steel, is circ... | 08/09/1994 |
| 5328658 | Method of refining chromium-containing steel A refining method of decarburizing a molten steel containing a large quantity of chromium, which can be completed in a shorter period, and therefore, with reduced consumption of Ar gas, and with safety of operation. A mixed gas of O2 and Ar is ... | 07/12/1994 |
| 5314525 | Method for treating a liquid with a gas using an impeller An improved impeller head is provided for treating molten metals and other liquid systems with a gas. A multiple-vaned impeller head is adapted for mounting on a hollow impeller shaft for rotation within the liquid The edges of the impeller vanes are exte... | 05/24/1994 |
| 5304231 | Method of refining of high purity steel Disclosed is a method of refining of a high purity steel capable of effectively lowering impurities in molten steel into respective ultra-low ranges. In secondary refining for molten steel after a molten iron prerefining process and a converting process, ... | 04/19/1994 |
| 5019159 | Process and apparatus for the introduction of gas into a discharge opening of a metallurgical container containing molten metal For the procedure a gas, heated to at least 1000 degrees Celsius, preferably even beyond the liquid temperature of the melt, is blown into the discharge opening (26). In this manner freezing problems and deposits in the discharge opening can be largely pr... | 05/28/1991 |
| 5007958 | Lime-based injection powder for steel-refining A lime-based injection powder for use in steel-refining, having excellent waterproofing and desulphurization effects, consists of (a) more than 65% by weight of calcium oxide, (b) less than 30% by weight of fluorite, and 5-10% by weight of Al powder, 5%-7... | 04/16/1991 |
| 5004495 | Method for producing ultra clean steel A method and apparatus for the forced production of exceptionally clean steel wherein a metallurgical vessel is insulated and sealed to maintain a neutral environment into which steel is tapped and cleaned by use of gas injection and impurity precipitatio... | 04/02/1991 |
| 4908060 | Method for treating molten metal with a rotary device A rotary device for dispersing gas in molten metal comprises a hollow shaft and a hollow rotor attached to the shaft, the rotor having a plurality of vanes extending from the shaft towards the periphery of the rotor and dividing the rotor into a plurality... | 03/13/1990 |
| 4900357 | Injection of substances into high temperature liquids Gas injection into a metal melt, accompanied if desired by powdered or solid treatment substances, is by way of a nozzle inserted into the wall of a melt-containing vessel. The nozzle bore initially has a stopper at its inner end and a delivery pipe small... | 02/13/1990 |
| 4869749 | Chemical dehydrogenation of molten ferrous alloys using a halogen-containing compound The present invention is a process for the removal of hydrogen from molten ferrous alloys in the unkilled state via a chemical reaction with a halogen-containing compound. The halogen-containing compound is typically introduced into the molten alloy in th... | 09/26/1989 |
| 4830666 | Removal of nitrogen from iron A method of reducing the nitrogen content in iron and iron alloys comprises introducing hydrogen into the melt in the form of a gas or hydrogen compound in sufficient quantity and for a sufficient time to reduce the nitrogen content and subsequently treat... | 05/16/1989 |
| 4758269 | Method and apparatus for introducing gas into molten metal baths A method and apparatus for introducing gas into a molten metal bath contained within a refractory-lined vessel by the distribution of gas bubbles in the metal bath. The distribution is disbursed and covers a wide areas and mixing within the bath is improv... | 07/19/1988 |
| 4708738 | Method for refining very small heats of molten metal A steel refining vessel having a defined relatively long and thin configuration, and a steel refining method, particularly suited for the refining of heats of steel weighing two tons or less while enabling excellent heat retention and gas-metal reactions ... | 11/24/1987 |
| 4705664 | Radiant heat vaporizing injector An apparatus and method for injecting magnesium into molten iron. The magnesium is melted and vaporized in an enclosed container located above and heated by the molten iron. The magnesium vapor is then pumped into the molten iron by its own vapor pressure... | 11/10/1987 |
| 4647019 | Very small refining vessel A steel refining vessel having a defined relatively long and thin configuration, and a steel refining method, particularly suited for the refining of heats of steel weighing two tons or less while enabling excellent heat retention and gas-metal reactions ... | 03/03/1987 |
| 4575393 | Apparatus for introducing substances into liquids e.g. metal melts For the introducing gases, wires and powders to metal melts, a multi-ducted refractory body is installed in the wall of a vessel for the melt. The body has passage closing elements preventing melt entering the passages (A, B, C). Two passages (A and C) se... | 03/11/1986 |
| 4524954 | Method of operating a mixer type hot metal car for the transport of molten iron and a device for carrying out the method A hot metal car is used for the transport of molten pig iron from a blast furnace to a steel making plant, the car having an opening through which it is filled and emptied. To restrict heat loss from the car, the opening is closed during at least one of (... | 06/25/1985 |
| 4405365 | Method for the fabrication of special steels in metallurgical vessels The device consists of a retractible tuyere which can be used with different types of steel melting furnaces, or any other metallurgical vessel. Said tuyere is introduced in the liquid steel bath to make the controlled refining of the same by means of gas... | 09/20/1983 |
| 4395283 | Method of switching bottom-blown gases and apparatus therefor A method of switching bottom blown gases and an apparatus suitable for carrying such method into practice in blowing successively in turn a plurality of gases through piping into molten steel in a steel-making furnace through tuyeres or porous plugs for g... | 07/26/1983 |
| 4341553 | Method of, and cupola furnace for, the introduction of treatment agents into cupola iron melts A cupola furnace has a hearth 1 with tuyeres 2, a floor 3 and a tapping duct 4 leading to a forehearth 5. To enable treatment agents to be introduced into the melt in the furnace below the surface of the melt, the furnace is additionally provided with a l... | 07/27/1982 |
