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Class 373/117 - With heating element detail


Subclass of Class 373 - Industrial electric heating furnaces
Definition: Subject matter including specific features of the electrical resistance means.
No. of patents: 54
Last issue date: 09/09/2008


1    
NumberTitleIssue Date
7423242Oven 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
7164103Electrical heating resistance element
An electrical resistance heating element having a glow zone and two power supply terminals. The glow zone of the element is tubular. A tubular union is provided between each of the power supply terminals and a respective end of the glow zone, wherein the inner diame...
01/16/2007
7148450Portable blackbody furnace
The present invention discloses a portable blackbody furnace comprising a metallic body, a cylindrical cavity with a tapered end in the metallic body, a shielding plate positioned at an open end of the cylindrical cavity, at least a first heaters positioned in the s...
12/12/2006
7003985Method and apparatus for removing polymeric coatings from optical fiber in a non-oxidizing environment
In accordance with the invention, the polymeric coating is removed from a coated optical fiber by disposing the fiber within a non-oxidizing environment and applying sufficient heat to volatilize at least a portion of the polymeric coating. The result is that the co...
02/28/2006
7003014Electric heater for thermal treatment furnace
A heating element (12) made of metal wire is installed at an internal circumferential surface of a cylindrical main thermal insulation body (11) of an electric heater according to the present invention. The heating element (12) comprises a plura...
02/21/2006
7002116Baking method
A baking method for heating an object (an inner pipe, an outer pipe) having a vacuum layer formed therein to remove gas molecules occluded in the object, wherein the object itself is made to be a heat production element for heating. By making the baking object a hea...
02/21/2006
6879622Horizontal element arrangement means
An arrangement at installation of electrical resistance elements having high operating temperatures, in which arrangement comprises at least one element having a glow zone (3) and support and distance plates (1, 2) to carry the glow zone. The element i...
04/12/2005
6758902Heater arrangement for crystal growth furnace
A furnace for growing a high volume of crystals includes a plurality of individual growth stations and first and second heater matrixes. Each individual growth station has a crucible and an insulating container generally surrounding the crucible and thermally isolat...
07/06/2004
6307874Expansion loops for heating elements in vacuum furnaces
A heating element for a vacuum heat treating furnace, a hot zone for a vacuum heat treating furnace, and a vacuum furnace are disclosed. The heating element includes a first heating element portion formed of a thin form of conductive, refractory metal or ...
10/23/2001
6125658Glass 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
6122308Electric 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
6083625Curved graphite furnace elements
A graphite furnace element, such as a heat shield or heating element, comprises a plurality of bent, rigid, solid and arcuate-shaped graphite sheets that have been joined together, usually by screws or bolts. The bent graphite sheets typically have a wall...
07/04/2000
5963580High efficiency system for melting molten aluminum
A method and system of heating a body of molten aluminum, for example, contained in a heating bay, the method comprising providing a body of molten aluminum; projecting an electric powered heater into the body of molten aluminum; passing electric current ...
10/05/1999
5912080Shaped graphite elements fabricated from thin graphite sheets
A sheet of high strength graphite material is bent into an arcuate shape, and the bent sheet is retained in that shape for use in a high temperature furnace. The bent sheet is rigid and can replace prior art machined blocks of lower strength graphite in a...
06/15/1999
5894541Electric heater assembly
An electric heater assembly suitable for heating molten metal, the electric heater assembly having a sleeve comprised of a closed end suitable for immersing in the molten metal. The sleeve is fabricated from a composite material comprised of titanium allo...
04/13/1999
5864576Electric furnace
An electric furnace includes a heating element which is a hollow element made of a lanthanum chromite ceramic having an interior with two open ends in an longitudinal direction, terminal portions at the two ends, and a heat-generating portion between the ...
01/26/1999
5850073Electric heating element and heater assembly
Disclosed is an improved electric heater assembly suitable for heating molten metal, the electric heater assembly having a sleeve comprised of a closed end suitable for immersing in the molten metal. The sleeve is fabricated from a composite material comp...
12/15/1998
5705261Active metal metallization of mini-igniters by silk screening
A ceramic igniter comprising: a) a lead wire, b) a ceramic substrate, and c) a braze pad having a thickness of less than about 150 microns, wherein the lead wire and ceramic substrate are placed in electrical connection by the braze pad....
01/06/1998
5608838Blackbody type heating element for calibration furnace with pyrolytic graphite coating disposed on end cap electrode members
A blackbody type heating element for calibration furnaces employs an elongated hollow cylinder of graphite open at first and second opposite ends. The cylinder has an integral solid graphite partition centrally disposed in the cylinder and oriented at rig...
03/04/1997
5473141Radiant tube heating assembly
A radiant tube heating assembly for a furnace, which assembly combines the features of a heating element utilizing the latest powder metallurgical technology, improved ceramic spacers and staggered weld joints to thereby enable higher efficiency and heati...
12/05/1995
5414927Furnace elements made from graphite sheets
A high strength graphite material is fabricated into a sheet, the sheet is bent into a tube, and the tube is retained in that shape for use in a high temperature furnace. The retained tube is rigid and can replace prior art machined blocks of lower streng...
05/16/1995
5362033Hot plate for keeping molten metal in a molten state
A hot plate is used with a molten metal storage container in which a molten metal or bath is temporarily stored prior to any subsequent casting process, and keeps the molten metal temporarily stored in the storage container at a specific constant temperat...
11/08/1994
5327454Bridge for connecting cores in a manufacturing equipment of polycrystal silicon
In a equipment for manufacturing polycrystal silicon by depositing it on filament cores electrically heated, by means of thermal decomposition of monosilane gas, a bridge for connecting said filament cores is constituted by tantalum, molybdenum, tungsten ...
07/05/1994
5271032Lid heater for glass melter
A glass melter having a lid electrode for heating the glass melt radiantly. The electrode comprises a series of INCONEL 690 tubes running above the melt across the melter interior and through the melter walls and having nickel cores inside the tubes begin...
12/14/1993
5265118Silicon carbide whisker production apparatus
A silicon carbide whisker production apparatus manufactured by placing a plurality of lidded reaction vessels in the longitudinal direction of an Acheson furnace at intervals, packing graphite grains in the gaps between the adjacent reaction vessels and a...
11/23/1993
5251231Vacuum furnace
An electrically heated vacuum furnace has a plurality of heating elements (13) distributed in an array extending within the furnace. This allows accurate control of the application of radiant heat energy from the elements (13) of the array to articles (10...
10/05/1993
5193100Apparatus for detecting gaseous discharge in vacuum furnaces
An electrically heated vacuum furnace is provided with special lead-through devices for transmitting current to the heating elements. In order to recognize gas discharges which can occur between a lead-through and a tank wall, the insulation of the lead-t...
03/09/1993
5173921Apparatus and process for activation of carbon by electrical resistance heating in the presence of steam
In an apparatus and process for the activation of carbon from carbon feedstocks by electrical resistance heating in the presence of steam, which comprises preheating particles of the carbon feedstock in a preheater, having the particles descend by gravity...
12/22/1992
5157242Hanging 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
5136610System for carrying a charge in a reheating furnace
The system comprises at least one coolant-carrying tubular support carrying at least one rider. The latter consists of a heat-resistant cast housing provided with at least one cutout into which a ceramic carrier is inserted. The carrier is of sufficient c...
08/04/1992
4777022Epitaxial heater apparatus and process
Chemical vapor deposition apparatus has a quartz envelope supporting a resistance heater. A boron nitride pill box configured core supports resistance heater windings. The core has a base having a cylindrical upper portion defining a hollow chamber and an...
10/11/1988
4701933Method of supplying heat energy to a metal melt or the like and a heating element for use with said method
The method according to the present invention relates to supply of heat energy to a metal melt or a similar electroconductive fluid (1,11). According to said method rod-like elements are partly immersed in the metal melt or a similar electroconductive flu...
10/20/1987
4606037Apparatus for manufacturing semiconductor single crystal
The heater member of a furnace for heating the crucible used for fusing raw materials for a semiconductor single crystal is provided with reinforcing members made of a material such as alumina or pyrolytic boron nitride which excels in electric insulating...
08/12/1986
4602238Infrared 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
4555358Electrically conductive sintered ceramics and ceramic heaters
An electrically conductive sintered ceramics of the present invention comprises, as the main ingredients thereof, (a) silicon carbide, (b) an inorganic compound which exhibits a positive resistance-temperature coefficient, and preferably (c) a sintering a...
11/26/1985
4542513Heater for hot isostatic pressing apparatus
A stacked type heater construction particularly suitable for large HIP apparatus, having a number of heating unit assemblies stacked one on another to provide a vertical series of independently controllable heating zones, the heater including a generally ...
09/17/1985
4520487High 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
4510609Furnace for vertical solidification of melt
A furnace for growing large single crystals from materials having high meng temperatures using the vertical solidification of melt method. The crucible containing the melt being encased in a muffle with vertically oriented heating rods arranged in a circ...
04/09/1985
4503319Heater 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
4490828Electric resistance heating element and electric resistance heating furnace using the same as heat source
An improved electric resistance heating element made of a carbon material, provided around its surface with a layer essentially comprising carbon fiber, and an improved electric resistance heating furnace using the heating element....
12/25/1984
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