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| Number | Title | Issue Date |
| 6579491 | Insulated cover for torpedo cars and method of forming an insulated cover Improvements to an insulating cover for covering an opening in a torpedo car are disclosed. The insulating cover includes upper and lower wire mesh layers and an insulating layer positioned between the wire mesh layers. A support rod may be provided which... | 06/17/2003 |
| 6531088 | Automatic door for molten metal holding furnace A door for molten metal holding furnaces which includes a fixed plate with charging and inspection hole provided with two supports positioned at the sides of the charging hole and with two vertical wings positioned on an upper part of the plate and two gu... | 03/11/2003 |
| 6521177 | Process for compounding titanium alloys A method for compounding an alloy includes the step of forming a first batch of the base metal and tracking the first batch through the process. The master alloy is added to the first batch based on the weight of the base metal. In one embodiment, the mas... | 02/18/2003 |
| 6495094 | Apparatus and method for suppressing growth of oxide film on coil An apparatus and a method for suppressing growth of an oxide film on a coil which is a spirally wound, rolled strip are disclosed. A rolled strip subjected to rolling by hot rolling equipment is wound spirally by a down-coiler to make a coil. Covers are d... | 12/17/2002 |
| 6435261 | Mechanism for inverting the cope of a molding flask A mechanism for inverting the cope of a molding flask which includes a frame and support arms pivotally supported by the frame. The cope of the molding flask is attachable to the support to thereby enable the cope to be inverted to permit safe and efficie... | 08/20/2002 |
| 6409962 | Powder injector for ladle A powder injector for a ladle of molten metal having an exposed upper level with a given shape. The injector comprises a splash deflector with a cast body of heat resistant material with a downwardly facing lower surface defining an outer periphery and ma... | 06/25/2002 |
| 6221313 | Taphole knockout device A knockout device for removing a taphole sleeve from a furnace wall. The device is comprised of a pneumatic hammer having an elongated body and a weight reciprocally movable by air pressure along the body. The body has a first end with an air inlet for re... | 04/24/2001 |
| 6168753 | Inert pump leg adapted for immersion in molten metal A graphite support leg for positioning an object, such as a pump, in a bath of molten metal. The leg is enclosed in a ceramic sleeve, and an inert material is disposed in a clearance between the leg and the sleeve to protect the leg from the heat of the m... | 01/02/2001 |
| 6008152 | Refractory material of vitreous silica The invention concerns a refractory material comprised essentially of vitreous or amorphous silica and presenting an improved resistance to corrosion by molten metals, principally aluminium. It contains at least 0.1% and no more than 10% by wt. of barium ... | 12/28/1999 |
| 6004505 | Process and apparatus for the preparation of particulate or solid parts The present disclosure is directed to a method of converting green particles to form finished particles. The apparatus used for sintering incorporates an elongate hollow tube, an insulative sleeve there about to define an elevated temperature zone, and a ... | 12/21/1999 |
| 5972283 | Stabilized ladle for metal casting A substantially constant resistive force is applied to the drive motor of an automated ladler arm to prevent jerky movement of the arm during a downward or descending portion of its travel from a furnace to a mold. The force may be applied through an air ... | 10/26/1999 |
| 5925312 | Push-pull apparatus adapted for assembling and disassembling a tubular body that is to be fitted into a ring retainer on a wall member A push-pull apparatus includes a machine base, and a coupling unit having a retractable main frame disposed on top of the machine base and longitudinally movable in forward and rearward directions relative to the machine base, and a coupler mounted on a f... | 07/20/1999 |
| 5882576 | Insulating cover for torpedo cars An insulating cover for covering an opening in a torpedo car is disclosed. The insulating cover includes an upper and lower wire mesh layer and an insulating layer positioned between the wire mesh layers. Tie devices secure the wire mesh layers together a... | 03/16/1999 |
| 5645793 | Cartridge handling hand of a cartridge system sliding valve apparatus for a molten metal vessel A cartridge handling hand of a cartridge system sliding valve apparatus for a molten metal vessel is mountable to a general purpose robot. The hand includes a cartridge pressing cylinder secured to a mounting plate whose one side surface is provided with ... | 07/08/1997 |
| 5567380 | Rotary retort heat treating furnace seals The present invention provides a seal ring assembly for sealing a discharge end of a rotary retort heat treating furnace. The furnace contemplated by this invention has an outer furnace shell, a retort chamber, a rear plug, a cone casting, and a support r... | 10/22/1996 |
| 5435526 | Collecting pit A collecting pit for receiving molten metal and draining cooling water. The collecting pit (1) is equipped with a drainage layer (5, 6) formed of slag granulate, the grains of the slag granulate being interconnected by means of a binder while maintaining ... | 07/25/1995 |
| 5383651 | Aluminum coil annealing tray support pad In a preferred embodiment of this invention as illustrated in the accompanying drawings in FIGS. 5 and 6, an annealing tray coil support pad 24 is formed of a woven cloth high temperature resistant fabric layer 26 and a similar bottom layer 28. The woven ... | 01/24/1995 |
| 5303903 | Air cooled molten metal pump frame An air cooled molten metal pump frame includes a base structure and molten metal pump supporting structure comprising tubular members to facilitate flow of cooling air therethrough. The cooling air flowing through the molten metal pump frame provides cool... | 04/19/1994 |
| 5188796 | Tundish impact pad A tundish impact pad is provided for use in a tundish vessel. The impact pad has a wavy upper surface which significantly reduces the horizontal surface area in the region of impact where molten iron or steel enters the tundish vessel. This wavy surface s... | 02/23/1993 |
| 5176876 | Insulating ceramic fiber batting module, anchoring system, ladle cover assembly and method of assembly A lightweight ladle cover employing ceramic fiber mats in modules. The modules are formed by having the generally rectilinear mat folded into five adjacent sections, the first of which depends vertically toward the "hot" side of the cover but is sandwiche... | 01/05/1993 |
| 5143684 | Insulated roller assembly for a roller furnace A roller assembly for a roller furnace for heat treating slabs is provided with thermal insulation. A metal roller has carrier rings spaced at intervals thereon for carrying a slab to be treated. A needled first fiber mat surrounds the metal roller betwee... | 09/01/1992 |
| 5133534 | Device for removing worn nozzle bricks or nozzle linings from metallurgical vessels A device for removing worn nozzle bricks or nozzle linings from the tap holes of metallurgical vessels including a spreading device, which can be introduced into the nozzle brick or tap hole, and a drive for extracting the nozzle brick or lining by means ... | 07/28/1992 |
| 5131636 | Lance holder for a compact lance The lance holder for an oxygen lance has a substantially increased reliability and safety, since a valve disk slidable against the force of a valve disk spring by insertion of the lance is provided in a retaining body between the slag run back safety devi... | 07/21/1992 |
| 5129998 | Refractory hard metal shapes for aluminum production The density of various refractory hard metal articles are controlled so that articles made from the refractory hard metals are able to float on the surface of molten aluminum. Floating such articles on aluminum has been found to both stabilize and protect... | 07/14/1992 |
| 5127633 | Apparatus for installing or removing shaft furnace tuyeres or tymps The apparatus comprises a hydraulic ram mounted on a movable support designed to be placed in line with the axis of the tuyere or tymp so as to bear on the furnace wall and to act on a gripper composed of two telescopic members respectively displaceable r... | 07/07/1992 |
| 5122185 | Low pressure drop, high surface area platinum recovery system in a nitric acid plant This invention is a method for the recovery of precious metal selected from the group consisting of platinum and rhodium lost from a platinum-containing catalyst during ammonia oxidation processes at a temperature above 850° C. which comprises bringing s... | 06/16/1992 |
| 5091000 | Method for cleaning molten metal and apparatus therefor Molten metal is put under pressure of up to 10 atmospheres in a covered ladle and a gas soluble in the metal is bubbled through the melt. Some gas goes into solution, while the remainder rises in bubbles and brings inclusions suspended in the molten metal... | 02/25/1992 |
| 5072916 | Tundish impact pad A tundish impact pad is provided for use in a tundish vessel. The impact pad has a wavy upper surface which significantly reduces the horizontal surface area in the region of impact where molten iron or steel enters the tundish vessel. This wavy surface s... | 12/17/1991 |
| 5065987 | Refractory ceramic fiber ladle covers Ladle covers are insulated with refractory ceramic fiber modules. An outer portion of a lower part of the cover conforming to the shape of the ladle rim is insulated with trapezoidal modules. A central portion beneath the cover within the outer portion is... | 11/19/1991 |
| 5064175 | Method and devices for removing alumina and other inclusions from steel contained in tundishes Molten steel in tundishes can be contacted with high surface area ceramic shapes which remove the alumina and other impurities contained in steel. Certain ceramic shapes, in particular tundish baffles, having a large surface area which acts as alumina tra... | 11/12/1991 |
| 4984771 | Heating system for steel casting ladles Steel casting ladles present at different locations are supplied alternately with one heating system for all of the steel casting ladles. The heating system including current bearing heating cables is arranged on a wheelable platform which in turn is pres... | 01/15/1991 |
| 4944495 | Method and apparatus for leveling a refractory bed surface A leveling apparatus for leveling a surface of refractory bed comprised of refractory pebbles. The leveling apparatus is comprised of a disk having a level bottom surface suitable for positioning upon the surface of the refractory bed. A plurality of spac... | 07/31/1990 |
| 4919397 | Stationary injection block and injection slide plate for use with an injection valve A multiple orifice injection valve having a stationary block which communicates between the vessel and a sliding plate. The sliding plate is provided with at least one injection port and drive means for rotatably indexing the same in and out of register w... | 04/24/1990 |
| 4896865 | Force-absorbing means in a furnace Expansive forces in a furnace of cylindrical shape (e.g. a ladle furnace) are absorbed by means of a metallic ring positioned in the bottom of the furnace which substantially fits the inner, lower side wall of the cylindrical steel shell of the furnace an... | 01/30/1990 |
| 4893792 | Cold trap This invention relates to a cold trap for collecting impurities from liquid, which comprises a mesh screen and a spacer mesh having higher strength and wider mesh holes than that of the mesh screen interposed between the windings of the mesh screen. Accor... | 01/16/1990 |
| 4875663 | Closure device with cleaning of a pouring hole Closure device for a pouring hole (2) having a vertical axis, arranged in the base (11) of a container (1) containing molten metal. The device comprises a flap (3) fixed to the end of a maneuvering arm (3) which is horizontally displaceable to a level bel... | 10/24/1989 |
| 4858893 | Bell furnance and hardening vat arrangement A bell furnace (2) and hardening vat (3) arrangement comprises charge (4) supporting means (14, resp. 29, 32, 33) connected to the bell and extending toward the center of the bell. It comprises means (18, 18', resp. 28) for imparting solely to the bell ei... | 08/22/1989 |
| 4842172 | Composite refractory member A composite refractory member includes at least one insert formed of an oxide ceramic material having a high resistance to molten material. The insert defines a discharge opening or other molten material contacting surface. A base structure encloses and s... | 06/27/1989 |
| 4824079 | Injection valve components and method An injection valve which is positioned on the underneath portion of a teeming vessel is disclosed. The valve itself includes a mounting plate, and a well block nozzle which is in open communication with the metal being teemed in the vessel. Beneath the sl... | 04/25/1989 |
| 4799649 | Injection valve components and method An injection valve which is positioned on the underneath portion of a teeming vessel is disclosed. It may be positioned under a ladle, or under a tundish. The valve itself includes a mounting plate, and a well block nozzle which is in open communication w... | 01/24/1989 |
