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| Number | Title | Issue Date |
| 7439473 | Method and arrangement for supporting vertically depending electrical resistance elements A method of supporting vertically hanging electrical resistance elements for heating furnaces or ovens in industrial operations. Each resistance element includes current-conducting legs that extend downward and upward a number of times, and the element includes alon... | 10/21/2008 |
| 7423242 | Oven for non-metal melting Oven for non-metal melting, in particular silicon melting, with a housing enclosing an interior, at least one mould arranged in the interior for receiving a non-metal melt, at least one electrical heating device enclosing, at least partially, the at least one mould ... | 09/09/2008 |
| 7378621 | Molybdenum silicide type element The present invention relates to an electrical resistance element of the molybdenum silicide type that includes two terminals (1, 2) for the supply of electric current and at least one leg (3) which extends between the terminals and which includes a gl... | 05/27/2008 |
| 7230208 | Oven for dental prostheses or partial dental prostheses The invention relates to a stove for producing denture and or the parts thereof comprising a combustion chamber and a heating device which is arranged therein and provided with a heating spiral consisting of an appropriate resistance wire and a support for the heati... | 06/12/2007 |
| 7143766 | Temperature controlling device for aerosol drug delivery A portable air temperature controlling device useful for warming air surrounding an aerosolized drug formulation. Warming the air of an aerosol makes it possible to reduce the diameter of aerosol particles produced by an aerosol generation device. Additionally, warm... | 12/05/2006 |
| 7053749 | Metal plate resistor A metal plate resistor includes a resistive body comprising a metal plate, and at least a pair of electrodes joined respectively to opposite ends of the resistive body, the electrodes being made of a highly conductive metal conductor. The resistive body has a main s... | 05/30/2006 |
| 6993060 | Resistor made from carbonaceous material A crenellated resistor made from a carbonaceous material and having the shape of a hollow cylinder for use in furnaces working at high temperature. The resistor is characterized by the thickness of the cylinder walls which follows a profile determined so as to produ... | 01/31/2006 |
| 6917014 | Sealing system for forming thermal seals and methods of operation thereof The invention is a sealing system and a method of operation thereof. A sealing system which forms spaced apart thermal seals along a moving at least one web (60) by contact of the moving the at least one web with heated portions (74) of sealing element... | 07/12/2005 |
| 6917278 | Resistor banks A Resistor bank has first and second supporting member. Held on to the supporting members is a resistor element comprising a strip of resistor material which is bent into a zigzag shape. The strip is continuous and has a non-planar cross section profile. A plurality... | 07/12/2005 |
| 6349108 | High temperature vacuum furnace An electric resistance high temperature vacuum furnace having radiant heating units evenly spaced around the sides and ends of the furnace hot zone. Pairs of units are automatically regulated both radially and longitudinally according to the temperature r... | 02/19/2002 |
| 6125658 | Glass furnace and installation comprising same The invention relates to the electric melting technique, in which the melting energy is dissipated in the bath of melted glass as a result of the Joule effect by means of electrodes which dip through the surface of the bath. According to the invention, th... | 10/03/2000 |
| 6122308 | Electric resistance type melting furnace The electric resistance type melting furnace according to the present invention prevents deformation and destruction of graphite electrodes under high temperature conditions. In a melting furnace 1, graphite electrodes 3a and 3b each having a rectangular ... | 09/19/2000 |
| 6023487 | Process for repairing heat treating furnaces and heating elements therefor This invention relates to heat treating furnaces which employ electric resistance heating elements and, in particular, to improved processes for repairing such furnaces and heating elements particularly useful in such repair. A typical vacuum furnace empl... | 02/08/2000 |
| 5233165 | Electrical heating resistance using resistive elements made of carbon/carbon composite material The resistive elements are made up of strips of carbon/carbon composite material that are interconnected by connection pieces that are likewise made of carbon/carbon composite material and that serve both for making electrical connections and for making m... | 08/03/1993 |
| 5157242 | Hanging heating element for high temperature furnace Six curved hanging electrical heater panels made of tungsten or molybdenum are arranged to form a hollow cylinder, and are supported at their upper ends by electrical connectors. The hanging panels are electrically interconnected at adjacent lower corners... | 10/20/1992 |
| 5083012 | Resistance wire heating element An improved single heating element for a furnace, and method of designing the circuit is provided. In the method of design and constructing the heating element, the voltage level of the furnace is determined, the operating temperature of the furnace is de... | 01/21/1992 |
| 5064995 | Heating device for generating very high temperature A heating device including a body comprised of two or more strata of electrically conductive refractory particles, a supporting element of a refractory material between adjacent strata and an arrangement for passing an electrical current through the body.... | 11/12/1991 |
| 5065131 | Electric immersion heater An immersion heater for a fluidized bed decarbonation reactor includes an elongate cylindrical graphite heating element within a sealed chamber into which an inert gas, such as argon, is introduced for protecting the heating element from oxidation and fro... | 11/12/1991 |
| 4927446 | Glass melting furnace A vertical glass melting furnace provided with a material entrance at the uppermost portion and a molten glass exit provided at the lowermost portion. A resistance heating element 6 is provided over the substantially entire part of the horizontal section ... | 05/22/1990 |
| 4803698 | Electrically heated forehearth An electrically heated forehearth for use in glass production is heated by means of a plurality of radiant heating elements, each element traversing the forehearth substantially at right angles to the direction of glass flow and each element comprising he... | 02/07/1989 |
| 4755658 | Segmented heater system A zig-zag picket graphite heater for use in high temperature furnaces of the type used for crystal growing, for example, utilizes a plurality of discrete graphite arcuate shell segments having vertically extending slots alternating from the upper and lowe... | 07/05/1988 |
| 4754124 | Resistance heaters A resistance heater for performing heat treatment of the braze-affected area of a metallic sleeve attached by brazing within and to a metallic tube, comprises a metal tube (10) of which a portion (16) is formed with a spiral groove (11) which penetrates t... | 06/28/1988 |
| 4687911 | Electric furnace heater A generally cylindrical, self-supporting, unitary high-temperature electrical resistance heating element is disclosed. The heating element is composed of a wire grate formed from a plurality of electrically continuous and intersecting wire segments made o... | 08/18/1987 |
| 4622678 | Electrically heated forehearth A forehearth having a delivery channel 2 for a molten liquid (e.g. glass) 1, provided with a channel ceiling 11 of an insulating refractory ceramic fibre material and with electrical heating means 6, is capable of greatly increased efficiency in energy us... | 11/11/1986 |
| 4604754 | Suspension device for resistor elements in furnaces Suspension device for electric resistor elements (5) in furnaces. A rod element (4) is horizontally arranged and is supported by consoles (2,3) at a distance from the furnace walls (1). The resistor element (5) is suspended on the rod element (4) and form... | 08/05/1986 |
| 4602238 | Infrared panel emitter and method of producing the same A nonfocused infrared panel emitter and method of making the same. The panel emitter includes a primary emitter positioned between an insulating layer and a secondary emitter. Preferably, the panel emitter comprises a metal foil primary emitter, woven alu... | 07/22/1986 |
| 4596922 | Heating element An energy efficient heating element (10) is set forth which includes a resistance wire (15). The wire (15) has a diameter at 20° C., d, and has a generally sinuated configuration defining a plurality of loops (30). The wire (15) is bent backwards central... | 06/24/1986 |
| 4575619 | Electrical heating unit with serpentine heating element A heating unit combining a block of thermal and electrical insulating material and an electrical resistance element in which the block contains a mass of ceramic fibers bound together and has an elongated slot with confronting walls rising to the surface ... | 03/11/1986 |
| 4573164 | Support for electrical resistances of ovens or kilns with ceramic mantle thermal insulation Utility model patent for a support for electrical resistances of ovens or kilns with ceramic mantle thermal insulation, used to support resistances of the kind consisting of a filament or ribbon of electrical conductor material laid in a sinuous or fretwo... | 02/25/1986 |
| 4559631 | Heat treating furnace with graphite heating elements A heat treating furnace having a work chamber of circular cross-section and having banks of electric resistance heating elements formed by rigid and elongated graphite bars. The graphite bars of each bank are interconnected so as to form an octagon locate... | 12/17/1985 |
| 4554441 | Electric heating coil A delivery system is provided for use in conjunction with the metalurgical furnace of the type having an elongated furnace chamber with an access door at one end for delivering a coffin containing parts into the interior of the furnace chamber. The delive... | 11/19/1985 |
| 4550411 | Sources used in molecular beam epitaxy A molecular or atomic beam source for use in molecular beam epitaxy comprises a hollow cylindrical crucible, preferably made of boron nitride, which is heated by an electric current passed through a plurality of very thin elongate metal strips disposed ou... | 10/29/1985 |
| 4533822 | Heating resistor of single crystal manufacturing apparatus A heating resistor of a single crystal manufacturing apparatus, which comprises a cylindrical side wall portion surrounding a melting pot, a bottom portion supporting the side wall portion, and a plurality of slits formed in the side wall portion and bott... | 08/06/1985 |
| 4520487 | High temperature electric furnace with metallic resistances in the form of hollow vertical heating tubes A high temperature electric furnace has along its side walls vertical hollow electric resistance heating tubes (57) interconnected in serpentine fashion by conductive bridge plates (55). The tube ends and bridge plates are so contoured as to provide subst... | 05/28/1985 |
| 4503319 | Heater for hot isostatic pressing apparatus A heater for use in the HIP apparatus for treating a work item or work items in a high temperature and pressure gas atmosphere by isostatic application of pressure in a heated condition, the heater including at least one heater assembly unit including a m... | 03/05/1985 |
| 4486652 | Blackbody radiation source with constant planar energy flux A processor apparatus is provided in which a blackbody radiator having a constant planar energy flux characteristic is placed in opposition to semiconductor material. The blackbody source produces a constant planar energy flux to uniformly heat the materi... | 12/04/1984 |
| 4467185 | Heater for hot isostatic pressing apparatus A heater which includes: at least two electrically conductive heating element units having generally a self-standing cylindrical shape and stacked one on another to define a series of at least two cylindrical heating zones, the heating element units each ... | 08/21/1984 |
| 4445024 | Electric kiln This invention relates to a new type of electric kiln suitable for the firing of pottery in small batches as is customarily carried out by hobbyists. In its preferred form the invention comprises an upright cylindrical wall of ceramic fibre thermal insula... | 04/24/1984 |
| 4433233 | Silicon carbide heating elements An electrical resistance heater or igniter characterized by having a core bonded by regrowth of silicon carbide is produced by heating particulate silicon carbide which may be mixed with a minor amount of modifying agent, by means of an uncharged beam of ... | 02/21/1984 |
| 4412126 | Infrared source An infrared source comprising an electrically powered, hollow cylindrical rod which operates at lower temperatures and yet has no decrease in output power is configured by increasing the outside diameter of the rod and inserting grooves therein which prov... | 10/25/1983 |
