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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 8158055 | Melting furnace with agitator An agitator for agitating a melt includes a heat-resistive container having a blast opening through which cooling air is blown and an exhaust opening for exhausting air having been subjected to heat exchange, and a rotating magnet assembly composed of a permanent ma... | 04/17/2012 |
| 8101119 | Electromagnetic stirrer An object is to provide an electromagnetic stirrer that can provide an excellent stirring force more than before. An electromagnetic stirrer has a vertical electromagnetic field generating coil (1) vertically and circumferentially provided on the outer side o... | 01/24/2012 |
| 7972556 | Electromagnetic agitator An electromagnetic stirring apparatus includes a vessel (2) for containing an electroconductive material in a molten state, such as a molten metal (1); an axially traveling magnetic field generating coil (3) for generating magnetic line of force... | 07/05/2011 |
| 7799270 | Electromagnetic device for fusion and interfacial agitation of diphase systems, particularly for the acceleration of metallurgic or pyrochemical processes Electromagnetic device for fusion and interfacial agitation of diphase systems, particularly for the acceleration of metallurgic or pyrochemical processes, which includes for example a crucible to contain a diphase system, an inductor surrounding this crucible, and ... | 09/21/2010 |
| 7736586 | Melting furnace with agitator There is provided a melting furnace with an agitator. The melting furnace with an agitator includes a melting furnace that contains melt, and an agitator that agitates the melt by an electromagnetic force. The agitator includes a first electrode that is provided at ... | 06/15/2010 |
| 7651656 | Melting furnace with agitator and agitator for melting furnace There are provided a melting furnace including a containing space for containing a melt of nonferrous metal, a magnetic field generating device, a magnetic flux therefrom, from outside penetrates the melting furnace for containing the melt to run through the contain... | 01/26/2010 |
| 7264767 | Method and device for reducing the oxygen content of a copper melt A process and a device serve for decreasing the oxygen content of a copper melt. One or more flushing plugs, from which a scavenging gas emerges, are arranged in the perpendicular direction in the lower region of the copper melt. The scavenging gas ascends into the ... | 09/04/2007 |
| 7255828 | Electromagnetic method and apparatus for treatment of engineering materials, products, and related processes A method and apparatus for performing electromagnetic treatment on engineering materials and products and for improving processing technologies and service characteristics of the materials. The apparatus integrates electromagnetic treatment with a thermal analyzer a... | 08/14/2007 |
| 7067178 | Substrate table, production method therefor and plasma treating device The susceptor (10) of a plasma treating device, or the electrostatic chuck (12) of a substrate table is formed by ceramic thermal spray method. A ceramic spray layer (12A) is pore-sealed by methacrylic resin (12D). Resin raw material main... | 06/27/2006 |
| 6579490 | Apparatus for generating compression waves in conductive liquid An apparatus for generating compression waves in a conductive liquid comprises a vessel containing a conductive liquid and ac electromagnetic force applying means provided around the vessels for generating the compression waves to achieve improvement afte... | 06/17/2003 |
| 6537342 | Induction furnace for a metal reduction and melting process Apparatus for a metal reduction and melting process, in which a metal and carbon-containing burden is heated in an induction furnace including a heating vessel in which the burden can float in at least one heap on a liquid metal bath in the vessel, is cha... | 03/25/2003 |
| 6533838 | High purity gallium for preparation of compound semiconductor, and method and apparatus for purifying the same In a process for separating impurities from a raw gallium material containing impurities, a process for refining gallium comprising progressively solidifying a raw gallium material provided in a liquid state inside a vessel while applying stirring, such t... | 03/18/2003 |
| 6391247 | Flat inductors A flat inductor heating system for inducing heat in a variety of applications including heating, melting and holding a melt at temperature. The system may also be used to stir the melt. The system includes at least one flat induction coil cast in an aggre... | 05/21/2002 |
| 6358466 | Thermal sprayed composite melt containment tubular component and method of making same A tubular thermal sprayed melt containment component for transient containment of molten metal or alloy wherein the tubular member includes a thermal sprayed inner melt-contacting layer for contacting molten metal or alloy to be processed, a thermal spray... | 03/19/2002 |
| 6010552 | Apparatus for the process of melting and purification of aluminum, copper, brass, lead and bronze alloys The present apparatus is comprised by two magnetic induction sets, one for melting of the raw material and the second for purification of molten metal; each set comprises a pot or crucible (1, 1'), an electromagnetic device, a filter (11) and a power supp... | 01/04/2000 |
| 5964920 | Method and apparatus for reduction of metal particulates The invention disclosed herein utilizes magnetic forces to draw metal particles having magnetic characteristics into and beneath the surface of a molten metal stream flowing through a non-magnetic trough. The apparatus of the present invention includes a ... | 10/12/1999 |
| 5948138 | Method and apparatus for stirring of molten metal using electromagnetic field Method and apparatus for controlling stirring of molten metal(24) during processing in a metallurgical vessel(20), free of mechanical-contact with the molten metal(24). Efficiencies of metal processing and improvements in metallurgical properties are achi... | 09/07/1999 |
| 5882582 | Liquid metal heating and casting ladle A ladle (1) comprising a main portion (5), an outlet (3) and an inductor assembly (2) fitted onto the main portion. The main portion comprises a cavity (13) defined by a refractory lining, provided with at least one opening (21) and shaped so that no pock... | 03/16/1999 |
| 5772725 | Method for fluxing molten metal A method of treating a body of molten metal to produce high levels of shear forces in the body. The method comprises providing a body of molten metal; inductively moving molten metal in the body in one direction at outer regions thereof and in an opposite... | 06/30/1998 |
| 5772320 | Method and aparatus for mixing a metal matrix composite An method and apparatus is described for mixing solid particulates in a molten metal matrix to form a metal matrix composite product flow. The apparatus a refractory vessel to hold the metal matrix; a refractory conduit in communication with both the inle... | 06/30/1998 |
| 5585067 | Aluminum alloys containing very finely dispersed bismuth, cadmium, indium and/or lead and a process for obtaining them An aluminum alloy containing at least one alloying metal selected from the group consisting of bismuth, cadmium, indium and lead in a quantity greater than the maximum solubility of the metal in solid aluminum. More than 80% by weight of the alloying meta... | 12/17/1996 |
| 5462572 | Method and a device for stirring a molten metal A method and a device for inductively stirring a molten metal. Magnetic fields are applied to act on the melt through a wall (11) which comprises a magnetic material. Said wall is saturated by a magnetic direct field such that an anisotropically directed ... | 10/31/1995 |
| 5429655 | System for removing non-metallic foreign matter in molten metal An apparatus for removing non-metallic foreign matter in a molten steel includes a tundish and a coil device. The tundish is an intermediate container receiving the molten steel from a ladle and feeding a purified molten steel by removing the non-metallic... | 07/04/1995 |
| 5385338 | Apparatus for melting aluminum alloy scraps Disclosed is a process for melting aluminum alloy scraps which comprises the steps of: giving a rotation force to molten metal reserved in a cylindrical chamber so that the molten metal is made swollen up along the inner circumferential surface of the cyl... | 01/31/1995 |
| 5350440 | Furnace with deflecting surface and method of charging metal solids A furnace (1) has a main holding (2) and a charging well (4) into which molten metal from the holding portion is circulated by means of an electromagnetic pump (7). Metal enters the well as a tangential flow and a stationary turbulator (10) is located in ... | 09/27/1994 |
| 5205981 | Method and apparatus for the production of semi-solidified metal composition In a method and an apparatus for producing a solid-liquid metal mixture in which non-dendritic primary solid particles are dispersed into the remaining liquid matrix through electromagnetic induction system, a core member is arranged inside a cooling agit... | 04/27/1993 |
| 5106411 | Method of and apparatus for removing non-metallic inclusions in molten metal A method of removing non-metallic inclusions from a molten metal by allowing the molten metal to pass through at least first and second vessels which are intermediate between a ladle and a mold. The molten metal is made to stay in the vessel for a period ... | 04/21/1992 |
| 5100618 | Production of an aluminum grain refiner A process is described for producing an aluminum grain refiner, such as Al-Ti-B grain refiner. Molten aluminum is continuously flowed as a bottom layer along a substantially horizontal or slightly inclined trough. Titanium or boron compounds reducible by ... | 03/31/1992 |
| 4995593 | Crucible having a movable dross collector comprising an induction coil Apparatus for pouring molten metal comprises a cold crucible 15 which has a recess adjacent its top and a pouring spout 16 positioned in the recess just below the level of the surface of the melt. The recess defines a lip above the spout which helps to en... | 02/26/1991 |
| 4990059 | Method for filtering liquid-phase metals A method and apparatus is provided for filtering liquid-phase metal. The method comprises the steps of: (1) establishing a bath of liquid-phase metal; (2) providing a conduit connecting the bath to a filtering means; and (3) producing a magnetic field wit... | 02/05/1991 |
| 4986517 | Apparatus for pouring molten metals Apparatus for pouring molten metal comprises a water cooled copper crucible 15 which has a recess adjacent its top and a pouring spout 16 positioned in the recess just below the level of the surface of the melt. The recess defines a lip above the spout wh... | 01/22/1991 |
| 4933005 | Magnetic control of molten metal systems A static high intensity magnetic field is applied to electromagnetically-stirred molten metal to minimize turbulence in the molten metal. One application of the invention is to minimize meniscus distortions and/or surface disturbances produced by the elec... | 06/12/1990 |
| 4927460 | Induction melting and stirring Method of and apparatus for providing agitation of the melt in the induction melting of metals. A medium frequency melting power supply (12) of an induction furnace or crucible (10) acts in conjunction with a modulating circuit incorporating a wave form g... | 05/22/1990 |
| 4893793 | Apparatus for the manufacture of a thermostable amorphous ferromagnetic powder The thermostable amorphous ferromagnetic powder containing iron, cobalt, or nickel, also comprises xylene from 0.2 to 25% by volume of the powder particles, up to 20% chrome and boron by weight, and lithium or magnesium in amounts from 0.1 to 2.0% by weig... | 01/16/1990 |
| 4867786 | Electromagnetic stirring method In an electromagnetic stirring method, one or two electromagnetic inductors are provided to define an internal space therein or therebetween, a plurality of pairs of opposed magentic poles are provided on the inner side walls of the electromagnetic induct... | 09/19/1989 |
| 4842254 | Apparatus for purifying lithium The invention relates to an apparatus for purifying lithium, formed by a sealed enclosure comprising a heated upper portion 1 provided with a container 9 in which the molten lithium 11 is agitated and from which the impurities evaporate, and a cooled lowe... | 06/27/1989 |
| 4778518 | Slag-melt reactions with improved efficiency A method and a device for improving the efficiency of slag-bath reactions, for example in connection with sulfur removal from steel melts, involves stirring the melt with at least one inductive stirrer in such a way that the stirring force includes both a... | 10/18/1988 |
| 4769066 | Method for removing inclusions from a bath of molten metal and a device for carrying out this method The invention relates to a method for removing inclusions of foreign matter (for example slag inclusions) from a bath of molten metal. The method is characterized in that molten metal located in a bath in a vessel is rotated about a vertical axis by means... | 09/06/1988 |
| 4687183 | Apparatus for the production of liquid iron from iron oxide Method and apparatus for producing liquid iron from iron oxide, wherein the iron oxide is substantially converted to sponge iron by passing reducing gas through it in a reduction column and is then melted in a melt vessel which is in open communication wi... | 08/18/1987 |
| 4685657 | Melting furnace A melting furnace includes a body of a refractory material having a hollow melting portion for holding a molten material and a hollow heating portion disposed adjacent thereto for holding the molten material and maintaining the molten material at elevated... | 08/11/1987 |
