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| Number | Title | Issue Date |
| 7352792 | Enhanced joints for pins and electrodes with asymmetric properties A joint for connecting two carbon members, with at least one carbon member having an asymmetrical coefficient of thermal expansion. The carbon member having the asymmetrical coefficient of thermal expansion also has either a male tang or a female socket with an elli... | 04/01/2008 |
| 7324577 | End-face seal for male-female electrode joints A male-female electrode joint is presented, the joint including two joined graphite electrodes having blocked threads and having a seal interposed between the electrodes, the seal composed of a material having an oxidation rate equal to or less than that of the elec... | 01/29/2008 |
| 7230969 | Electrode joint locking system An electrode joint having first and second complementary elements capable of being joined together to form the joint, wherein one of the threaded elements has at least one slot at least partially along its length; and wherein one of the threaded elements includes a ... | 06/12/2007 |
| 6952438 | Threaded connection for carbon and/or graphite electrode columns A threaded connection is secured against loosening/unscrewing for columns of carbon and/or graphite electrodes. The electrodes are connected in columns with threaded connection elements, i.e., carbon connecting pins. At least one part has a wedge ramp on the root of... | 10/04/2005 |
| 6925104 | Carbon electrodes and connection elements of the electrodes having directionally structured contact surfaces Electrode columns made from carbon and graphite are screwed together from individual elements, for example, the electrodes and nipples. The elements have directionally structured contact surfaces. Such a structure of the contact surfaces gives rise to the elements o... | 08/02/2005 |
| 6377603 | System for the assembly of a self-baking composite electrode for electric arc furnaces A system is disclosed for assembling a composite, self-baking electrode for electric arc furnaces. The electrode includes an outer metal ferrule, a central column of prebaked carbon or graphite sections assembled by nipples. New sections are added to the ... | 04/23/2002 |
| 6075806 | Coaxial electrode assembly having insulating spacers In an arc furnace or melter furnace employing concentric graphite inner and outer electrodes, the accumulations of tolerances, distortion and mechanical forces can cause a loss of concentricity leading to reduced performance and eventually to electrode de... | 06/13/2000 |
| 5870424 | Graphite electrode having joints In order to prevent the rupturing of a graphite electrode comprising electrode sections joined with one another by a socket and a nipple, electrical insulating material is applied on the joined surfaces to decrease the current across the nipple.... | 02/09/1999 |
| 5854807 | Electrode for silicon alloys and silicon metal The self-baking electrode suitable for use in an electric arc furnace comprises an elongated open ended electrically conductive casing for extending generally vertically within the furnace. A central core made of a heat conductive material is disposed wit... | 12/29/1998 |
| 5575582 | Fastening device for securing electrode joints Electrode joint for threadably joining two abutting carbon upper and lower electrode sections is provided with a locking pin releasably held in an upper electrode section which when released engages a groove in a lower electrode section.... | 11/19/1996 |
| 5577065 | Device for mounting a self-baking electrode for an electric arc furnace A device for mounting a self-baking composite electrode for an electric arc furnace, which includes a hollow metallic shell, a central column of graphite or pre-baked carbon comprising a plurality of elements fitted together by means of nipples. A carbona... | 11/19/1996 |
| 5336015 | Self centering electrode joint Threaded nipple for joining two electrode sections is provided with an integral ridge intermediate its threads for centering the electrodes in coaxial alignment.... | 08/09/1994 |
| 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 |
| 5015518 | Graphite body A graphite body which is capable of connecting a plurality of the graphite bodies one by one. The graphite body includes one connecting end surface having a T-shaped mound and the other connecting end surface having an inverted T-shaped groove so that the... | 05/14/1991 |
| 4853942 | Graphite electrode with internal cooling for electric arc furnaces Graphite consumable electrode for electric arc furnaces and the like, which comprises a plurality of essentially similar graphite sections and coupled one to the other by means of threaded connections, wherein each section is provided with cooling conduit... | 08/01/1989 |
| 4737256 | Laminated carbon cathode for cells for the production of aluminium by electrolytic smelting A laminated carbon cathode includes two layers of carbon blocks, i.e. and the upper layer of graphite of graphitised carbon, and a lower layer of a cheaper anthracite carbon. The two layers are so displaced with respect to one another that there are no ve... | 04/12/1988 |
| 4703492 | Joined carbon electrodes and method for the joining thereof The present invention relates to joined carbon electrodes, each of which has a mark formed on such a part of the circumferential surface of each of the first and second carbon electrodes that upon the coinciding of the marks with one another the ends of t... | 10/27/1987 |
| 4691324 | Electrode connection Connection between the sections of a graphite electrode in whose faces a socket is sunk to accommodate a threaded nipple. The socket base has a rotation-symmetrical recess whose principal sections are defined by a second or higher order curves and go over... | 09/01/1987 |
| 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 |
| 4679206 | Electrode joint thread form The probability of thread damage during the joining of carbon or graphite electrodes having tapered threaded projections or sockets is reduced by an improved thread configuration wherein the thread crest angle is less than the taper angle of the threaded ... | 07/07/1987 |
| 4659442 | Method of reducing the loss of carbon from anodes when producing aluminum by electrolytic smelting, and an inert anode top for performing the method Carbon losses are reduced in that an operative carbon anode is glued beneath a carbon core in an inert anode top. The operative anode carbon is almost completely consumed. The anode top is then cleaned and a new operative carbon is glued to its underside.... | 04/21/1987 |
| 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 |
| 4594722 | Graphite electrode for arc furnaces and method for manufacturing same Graphite electrode for arc furnaces composed of a plurality of graphite electrode parts comprising a plurality of electrode sections connected by threaded graphite nipples, wherein at least one part of a graphite electrode has a plurality of graphite-fila... | 06/10/1986 |
| 4490825 | Water-cooled electrode A water-cooled arc furnace electrode includes a hollow metallic jacket having a cylindrical wall portion supported in spaced relation from a graphite electrode. A shell is spaced from and surrounds the wall portion and has a section extending below the wa... | 12/25/1984 |
| 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 |
| 4435816 | Method and article for protecting tapered threaded electrode joints by use of an alignment mechanism Taper thread joints in carbon or graphite electrode columns are protected from thread damage during assembly by use of a consumable centering pin to assure axial alignment of the mating parts, thereby preventing thread damage and resulting thread debris f... | 03/06/1984 |
| 4375340 | Carbon electrode joint Thread material is removed from the non-load bearing flank of a selected number of threads on each side of the center thread of a nipple to provide increased strength for an electrode joint formed therewith.... | 03/01/1983 |
| 4357485 | Ladle steel treatment system including three-part electrode casing A steel treatment system includes a ladle having a cover, a heating electrode mounted to extend through an opening in the cover, a casing surrounding the electrode and including lower, intermediate and upper sections, and a seal mounted at the cover about... | 11/02/1982 |
| 4349910 | Method and apparatus for orientation of electrode joint threads The proper assembly of electrode sections is facilitated by placing orientation match-marks on the electrode ends, which marks are lined up at the time of the assembly. Placing of the marks is done with marking gauges and the location is predetermined wit... | 09/14/1982 |
| 4288353 | Carbon bearing contact paste Carbonaceous contact paste for producing a high strength, electrically conductive connection between elements which experience high temperatures. The cold workable paste comprises a mixture of epoxy resin and tar as binder and graphite and metal in powder... | 09/08/1981 |
| 4191486 | Threaded connections In a threaded connection to be loaded in an axial direction, said connection comprising two pieces (i) having coincidental axes and (ii) having different coefficients of thermal linear expansion wherein one piece is a threaded male piece and the other pie... | 03/04/1980 |
| 4189617 | Liquid-cooled electrode for electric arc furnaces A liquid-cooled electrode for electric arc furnaces having a cover secured to an electrode supporting arm and containing cooled metal elements and having a core which can be axially displaced in the cover, into which core the electrode current can be cond... | 02/19/1980 |
| 4167643 | Electrode joints In joining together electrode segments through nipples for use in electric furnaces, certain designated threads adjacent the interface of the segments are inactivated so that only those threads tending to self-tighten with increasing temperature are activ... | 09/11/1979 |
| 4161619 | Electrode socket design The invention provides an electric-arc furnace electrode assembly having electrode sections of improved structural integrity. A pair of carbonaceous electrode sections are held securely in end-to-end relationship by a pin threaded into a pair of sockets f... | 07/17/1979 |
| 4152533 | Electrode joint The threads at the ends of a nipple for joining two electrode sections are chamfered, or chamfering is incorporated on the threads at the base of the electrode sockets, to provide increased flexural strength and thermal shock resistance for an electrode j... | 05/01/1979 |
| 4086380 | Granular disc joints for lengthwise graphitization A pad of conductive material composed of particulate carbon and an organic binder is provided which acts as a spacer between coaxially placed carbon electrode columns when they are subjected to resistance heating by passing electric current lengthwise thr... | 04/25/1978 |
| 4007324 | Nipple for electrode joint An improved graphite nipple for connecting contiguous lengths of graphite furnace electrodes. The nipple is of the type having a reservoir for a thread locking pitch composition. The reservoir contains a heat-foamable, thermoplastic material including par... | 02/08/1977 |
