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| Number | Title | Issue Date |
| 7301982 | Male-female electrode joint A graphite electrode joint, where the male tang has a tang factor, defined as the ratio of male tang length to electrode diameter, of at least about 0.60. ... | 11/27/2007 |
| 7016394 | Male-female electrode joint A graphite electrode joint, where the male tang has a tang factor, defined as the ratio of male tang length to electrode diameter, of at least about 0.60. ... | 03/21/2006 |
| 5940426 | Adapter device for composite electrodes with an auxiliary reactance function on electric arc furnaces Adapter device for composite electrodes having an auxiliary reactance function on electric arc furnaces, the furnace being able to be of a type fed with direct current or alternating current and comprising at least one secondary supply circuit which conne... | 08/17/1999 |
| 5933445 | Cooling system for cathodes in direct current electric arc furnaces Cooling system for cathodes, or electrodes, (11) in Direct Current electric arc furnaces, the cathodes (11) comprising a lower consumable graphite part (11a), from which the electric arc is sparked, associated at the upper part with a hollow metallic part... | 08/03/1999 |
| 5912916 | Electric furnace with insulated electrodes and process for producing molten metals An electric arc furnace having a partially insulated electrode produces molten metal such as foundry iron from an iron source where little or no slag is produced. The furnace includes at least one insulated electrode assembly for immersing deep into the m... | 06/15/1999 |
| 5905754 | Automatic system for connection of pneumatic and hydraulic hoses on a composite electrode for arc furnaces System for connection of pneumatic and/or hydraulic hoses (11) on composite electrodes (12) for arc furnaces, the electrodes (12) comprising, at least one hollow adapter (13) associated at their lower part with a replaceable graphite element (14), the ele... | 05/18/1999 |
| 5715273 | Secondary circuit with variable impedance for electric arc furnaces A secondary circuit having a variable impedance for electric arc furnaces of a type working with alternating current, which is associated with a transformer (11) is disclosed. A secondary circuit comprises at least one rigid connection (12) connected to t... | 02/03/1998 |
| 5596598 | Electric melting device A support for a melting electrode used in a glass melting bath. The support includes concentric tubes which provide for the circulation of a cooling fluid within the support. A current is provided through the outer tube to the electrode. The surface of th... | 01/21/1997 |
| 5153895 | Nonconsumable, water-cooled electrode for electric metal smelting device A nonconsumable water-cooled electrode for electric metal smelting furnaces which includes inner and outer concentric steel tubes defining an annular space therebetween through which cooling water may be passed. A tungsten tip is attached to the tubes at ... | 10/06/1992 |
| 5125003 | Bottom electrode cooled sleeve for a metallurgical container The electric connection device comprises an electrode (5), a sleeve (19) mounted around a projecting end part (8) of the electrode (5), and an arrangement for cooling the sleeve (19) with a cooling fluid comprising at least one system (20, 20') of nozzles... | 06/23/1992 |
| 5117439 | Method for operating an electrode graphitization furnace The electric furnace operating cycle time is substantially reduced by directing water into the porous pack of carbonaceous material surrounding the electrodes at a water rate adjusted to maximize vaporization of water into steam within the porous pack whi... | 05/26/1992 |
| 4977576 | Safety flow stopper for water-cooled electrode A safety flow stopper in a water-cooled electric arc furnace electrode comprises a bob 16 held in place above a valve seat 12 by a release pin 17 resting on the bottom of the cavity in the nipple 20. If the electrode fails the release pin will no longer s... | 12/11/1990 |
| 4897170 | Manufacture of a Soderberg electrode incorporating a high carbon-contributing phenolic sacrificial binder The invention is a novel Soderberg electrode paste composition. The composition is a mixture comprising carbonaceous aggregate, novolac resin binder, plasticizer and optionally hexamethylenetetramine. The novolac resin of the binder has a melting point of... | 01/30/1990 |
| 4840718 | Inert composite electrode, in particular an anode for molten salt electrolysis An inert composite electrode, such as an anode, for molten salt electrolysis consists of an active part in the form of a plurality of bar-shaped active elements, in particular of ceramic oxide, which are arranged with their longitudinal axes mutually para... | 06/20/1989 |
| 4802188 | Water trap manifold for water cooled electrodes In a water cooled electrode assembly for an electric arc steel furnace, a water trap manifold 14 integral with the head assembly at the upper end of said electrode.... | 01/31/1989 |
| 4786438 | Lignosulfonate/urea binder for particulate composites A coherent particulate composite is formed by blending particulate material with a binder containing lignosulfonate and urea.... | 11/22/1988 |
| 4754463 | Hollow arc electrode A hollow arc furnace electrode comprises a central channel formed in its upper part as a tube and in its lower part as a passage extending through a graphite tip of the electrode. A metallic electrode portion is arranged around the central tube above the ... | 06/28/1988 |
| 4704230 | Lignosulfonate/urea binder for particulate composites A coherent particulate composite is formed by blending particulate material with a binder containing lignosulfonate and urea.... | 11/03/1987 |
| 4698825 | Protective coating of temperature resistant materials for the metal shaft of combination electrodes for the electric steel production Temperature-resistant materials as protective coat for the metal shaft of combination electrodes for the electric steel production, constituting a compound material comprising a carbon share, which contains graphitic structural elements, and a share with ... | 10/06/1987 |
| 4689799 | Scalloped nipple for water-cooled electrodes A water-cooled electrode for an electric arc furnace is fitted with a copper nipple 10, increased surface area through fluting or drilled or threaded passages for vastly improved cooling, joining the water-cooled and graphite portions of the electrode.... | 08/25/1987 |
| 4672628 | Assembly for the automatic cooling water connection to water-cooled combination electrodes for electric arc furnaces An automatic facility for the connection of combination arc electrodes to a cooling water circuit, comprising a cooling water coupling device (17) mounted on the supporting arm (3) of the electrode, which on the one hand is connected to cooling water duct... | 06/09/1987 |
| 4648097 | Electrode for an electric arc furnace An electrode for an electric arc furnace includes a cooled metal sheath covered with a refractory protective jacket. A plurality of refractory anchors are fixed to the exterior of the sheath, and the anchors are spaced from each other. The protective jack... | 03/03/1987 |
| 4639928 | Disc means for an electrode for use in electric arc furnaces In an electrode for electric arc furnaces, having a water-cooled metallic electrode holder and a consumable section connected to the electrode holder by means of a threaded nipple, the electrode holder having a protective jacket made up of rings. A disc p... | 01/27/1987 |
| 4623250 | DC plasma jet generator for emission spectrochemical analysis Improvements on a DC plasma jet generator for emission spectrochemical analysis wherein two anode blocks and one cathode block are positioned in an inverted Y shape, and each of the anode blocks has a cylinder, a piston, an an anode received by a recess i... | 11/18/1986 |
| 4615036 | Cooling the electrode connection in an arc furnace An upper and a lower electrode section are mechanically interconnected through a nipple threaded into the lower electrode, as well as into a receiver on a tension rod pulling the nipple up, and thereby the lower electrode is urged against the front end of... | 09/30/1986 |
| 4610015 | Electrode assembly for arc furnaces An arc electrode assembly comprises a water-cooled metal shaft and a consumable active portion, being interconnected by means of a screw nipple. The metal shaft is surrounded below its clamping area by a protective jacket being detachably arranged about t... | 09/02/1986 |
| 4603424 | Fluid-cooled carrier member of a composite electrode of an electric arc furnace In a fluid-cooled clamp member (1) of a composite electrode (2) of an electric arc furnace, disposed in the flow path (13) for the coolant is a shut-off device (14) which is biassed in the closure direction, having an actuating member (15) by means of whi... | 07/29/1986 |
| 4601042 | Electric arc furnaces This invention concerns apparatus for selectively connecting an electrode of an electric arc furnace to a source of cooling fluid. The apparatus includes a coupling having passageways extending therethrough for the flow of cooling fluid and comprises at l... | 07/15/1986 |
| 4559630 | System for measuring the arc voltage in an electric furnace A system which permits the measurement, during operation, of the arc voltage electrodes having an upper metal portion (4) cooled by circulating water. The system employs an electrical instrumentation-cable (16) attached to a piece (5) for fixing the graph... | 12/17/1985 |
| 4532634 | Electrode for electric arc furnaces An electrode for arc furnaces, comprising a metallic water-cooled upper section and a consumable, replaceable lower section, interconnected by means of a threaded nipple or the like. At least one light-receiving element is positioned in a zone associated ... | 07/30/1985 |
| 4513425 | Composite electrode for arc furnace A composite water-cooled electrode for electric arc steel furnaces comprises a tubular graphite body held in compression by means of tension stressed internal water supply pipe located between a metal header at one end and a hollow metal nipple at the oth... | 04/23/1985 |
| 4509178 | Arrangement of an electrode for electric arc furnaces An electrode for electric arc furnaces, comprising an upper, metallic, water-cooled section and a lower section of consumable material, such as graphite, is held in its given position by means of an electrode support arm 1,2. The connection elements for e... | 04/02/1985 |
| 4498185 | Process for preventing burn-off on a current-conducting electrode for metallurgical furnaces and electrodes The electrode has a durable upper part and a consumable tip. A plurality of copper tubes extend through the upper part. The connection to the consumable tip is by means of an intermediate plate and a nipple, the latter containing ducts for the connection ... | 02/05/1985 |
| 4495624 | Graphite electrode nipple A graphite nipple projecting from one end of a graphite electrode portion of the type used in an electric furnace has a supporting face for receiving a non-graphite portion of a clamping device in shape-locking engagement for holding the electrode for use... | 01/22/1985 |
| 4490824 | Composite electrode for arc furnace A composite electric arc furnace electrode comprises a heavy-walled tubular graphite body with a sealed inner bore, a hollow nipple, a central coolant supply pipe, and a metal header assembly. If the unit fails, it is disassembled, a new graphite main tub... | 12/25/1984 |
| 4488312 | Electric arc furnace electrodes This invention relates to a water-cooled arc furnace electrode comprising a double-walled tubular metal column the two walls being electrically insulated from one another and defining an annular channel between them. The inner wall is electrically connect... | 12/11/1984 |
| 4481500 | Electrode for electric arc furnaces The invention concerns an electrode for arc furnaces, especially for electrosteel production, comprising a metallic liquid-cooled upper shaft (1) and an exchangeable lower active portion (2) of self-consuming material, particularly graphite, whereby a sec... | 11/06/1984 |
| 4474613 | Electrode for fusion electrolysis An electrode for fusion electrolysis comprising an upper portion (5) of metal and a replaceable lower portion (6) of self-consuming or of slowly self-consuming material which are interconnected by a screw-nipple (1) or the like, whereby the upper portion ... | 10/02/1984 |
| 4468783 | Electrode for arc furnaces Electrodes for arc furnaces comprising a top portion (5) of metal and a replaceable bottom portion (6) of material which is only slowly consumable, being substantially cylindrical shape and the portions being interconnected by means of a screw nipple (1) ... | 08/28/1984 |
| 4466105 | Electrode for arc furnaces An electrode for arc furnaces comprising a top portion of metal and a replaceable bottom portion of a material which, when appropriate, is only slowly consumed having a substantially cylindrical shape and being joined each to the other by a screwmounting,... | 08/14/1984 |
