Quotables
"I hate what they've done to my child...I would never let my own children watch it. "
Vladimir Zworykin, television pioneer ; Talking about an invention in which he played a critical role.
PatentStorm News
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7165506 | Method and device for plasma-treating the surface of substrates by ion bombardment In an ion etching method for reducing a substrate thickness, an electric arc is generated in a vacuum chamber such that the electric arc is locally separated from the substrate and circulates about the substrate. A plasma of a supplied etching gas is produced by the... | 01/23/2007 |
| 6549557 | AC arc furnace with auxiliary electromagnetic coil system for control of arc deflection An AC arc furnace has a plurality of electrodes arranged inside a furnace chamber enclosed by a shell. Each electrode is electrically connected to an electrode power source in series through corresponding auxiliary electromagnetic coils. The electromagnet... | 04/15/2003 |
| 5960027 | Apparatus for controlling arc deflection in an arc furnace An arc control apparatus for a DC arc furnace provides an additional magnetic field which prevents a discharged arc from shifting outward at an arc generating point due to the influences of a magnetic field generated by a feeder circuit, thus directing th... | 09/28/1999 |
| 5956366 | Arc furnace and method in which molten material is stirred and the arc is guided A direct current electric arc furnace for melting or heating raw material or molten material. The furnace includes a refractory lined vessel for holding raw or molten material in its interior. The furnace includes at least a first top electrode. The first... | 09/21/1999 |
| 5787109 | Furnace vessel for a DC arc furnace The furnace vessel for a DC arc furnace has a thermostable wall which preferably consists, in the region situated above the slag line (S), of a plurality of water-cooled wall segments (1) made from steel. These wall segments are fastened to a support stru... | 07/28/1998 |
| 5526374 | Direct current electric arc furnace A direct current electric arc furnace for melting metal, which furnace includes a furnace vessel having a lower vessel part lined with a refractory material and a metal upper vessel part through which a cooling agent can flow. A cover is adapted and arran... | 06/11/1996 |
| 5383218 | Direct current melting furnace with control of deflection of the electric age Direct-current smelting furnace with control of deflection of the electric arc, which comprises an upper electrode (13) with relative return-flow lines and a plurality of bottom electrodes (11) positioned on the hearth of the furnace (12) and arranged in ... | 01/17/1995 |
| 5317591 | Direct-current arc furnace In a direct-current arc furnace having a bottom contact (3) which has a large area, electromagnetically produced bath agitations are influenced by an electromagnet (9) disposed underneath the vessel bottom (4) such that the natural flow in the melt bath, ... | 05/31/1994 |
| 5237585 | Direct-current arc furnace having circumferential zones of varying conductivity A direct current arc furnace has a furnace vessel which is surrounded by a metal shell having at least one electrode connected as a cathode, and at least one bottom contact. The bottom of the furnace consists of a lining layer which possesses electrically... | 08/17/1993 |
| 5204872 | Control system for electric arc furnace An improved arc furnace regulator employs neural circuits connected in a multi-layer network configuration with various weighted relationships between the successive layers which are automatically changed over time as a function of an error signal by mean... | 04/20/1993 |
| 5191592 | D.C. electric arc furnace with consumable and fixed electrode geometry A direct current electric furnace for melting metal raw material, especially scrap iron, comprises two consumable electrodes separated from one another and both offset laterally on the side of the median plane P1 of the vessel turned towards the current s... | 03/02/1993 |
| 5138630 | Direct current electric arc furnace A direct current electric arc furnace comprises a main body, a moving electrode attached at the center of a roof of the furnace which generates an arc under the moving electrode, a bottom electrode attached at the center of the bottom, conductors which ar... | 08/11/1992 |
| 5134628 | Direct-current arc furnace having bottom electrodes with bath agitation electromagnet In a direct-current arc furnace having a bottom electrode (2), electromagnetically and/or chemically induced bath agitations are substantially eliminated by an electromagnet (9) arranged under the vessel bottom (7). In this way the stability of the bottom... | 07/28/1992 |
| 4931702 | Electric-arc device An electric-arc device has two aligned electrodes separated by an arc gap. The position of an electric arc in the arc gap is stabilized by using at least two coils, each made as a rectangular loop and bent around a cylindric surface. The coils are mounted... | 06/05/1990 |
| 4821284 | Scrap-melting process and electric furnace for carrying out the process A set of conductors comprising at least two return conductors (5) connected to a hearth electrode (3) is arranged along the outer face (11) of the furnace vessel in direct proximity thereto, and the profile and orientation of at least two conductors of th... | 04/11/1989 |
| 4815097 | Method and apparatus for stabilizing electric furnace arcs using an externally applied magnetic field Stabilizing the arc in an electric arc furnace is achieved by using a method and apparatus for applying a magnetic field parallel to the arc between the furnace electrodes. The magnetic field strength applied by the invention should exceed (hμoI)/(2π | 03/21/1989 |
| 4581745 | Electric arc melting apparatus and associated method Electric arc apparatus and an associated method are provided. Pairs of aligned cooperating coils are positioned on opposed sides of a crucible. In a preferred embodiment, three such pairs which overlap each other are employed so as to sequentially generat... | 04/08/1986 |
| 4578794 | Metallurgical vessel The metallurgical vessel comprises a continuous wall and a bottom plate and such vessel constitutes a mold for electrically remelting an electrode by resistance heating of an electrically conductive slag bath. The metallurgical vessel further comprises so... | 03/25/1986 |
| 4495625 | Magnetic field stabilized transferred arc furnace A DC electric arc furnace utilizing a magnetic field stabilized electric arc. A DC magnetic field is employed to cause rotation and angular deflection of the electric arc about the surface of the melt. In one embodiment the DC magnetic field is induced by... | 01/22/1985 |
| 4356340 | DC Arc furnace having a shielded arc A DC arc furnace has shielding between the arc and its power lines preventing or retarding the magnetic field created by the power lines from deflecting the arc.... | 10/26/1982 |
| 4149024 | Arc furnace for reducing metal oxides and method for operating such a furnace An arc furnace has an arcing electrode through which a feeding passage is formed for feeding metal oxide particles through an arc and to a melt in the furnace. The arc is powered by DC power with the electrode cathodic and the melt anodic. Carbon is fed a... | 04/10/1979 |
| 4135052 | DC arc furnace arc control A DC arc furnace having one or more arcing electrodes and a melt contact electrode transversely offset from the arcing electrode is provided on the outside of the furnace with control electromagnets which are supplied with DC for the purpose of keeping th... | 01/16/1979 |
| 4110546 | DC arc furnace having a rotating arc A DC electric arc furnace with a furnace enclosure having a hearth containing a melt and with an arcing electrode forming an arc with the melt and made to angularly deflect and rotate by magnetic means forming a rotating magnetic field in the enclosure, i... | 08/29/1978 |
| 4038483 | Means for direct current arc furnaces A DC electric arc furnace having laterally offset hearth and arcing electrodes, has the arcing electric power for one of the electrodes carried by a conductor arranged with respect to the furnace hearth to provide an electric field within the furnace and ... | 07/26/1977 |
| 4034146 | Method and apparatus for equalizing the wall lining wear in three phase alternating current electric arc furnaces Method and apparatus for increasing the life of the lining of a three phase AC electric arc furnace. An electro-magnetic coil, mounted under the furnace and powered by DC or low frequency AC sets up a magnetic field inside the furnace, intersecting the ar... | 07/05/1977 |
| 4016355 | Device in direct current arc furnaces The present invention relates to a device in direct current arc furnaces with a furnace vessel and at least one arcing electrode (cathode) and at least one contact electrode. The number of cathodes and/or contact electrodes (for example hearth connections... | 04/05/1977 |
| 3975184 | Method and apparatus for production of high quality powders An electric arc which is struck between an electrode and the surface of a pool of molten material rotates under the influence of a magnetic field to thereby free liquid particles from the surface of the pool. The particles produced are quenched in an adja... | 08/17/1976 |
