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Class Information
Number: 373/117
Name: Industrial electric heating furnaces > Resistance furnace device > With heating element detail
Description: Subject matter including specific features of the electrical resistance means.










Sub-classes under this class:

Class Number Class Name Patents
373/127 Having resistance encasement means 40
373/134 Including resistor shape detail 66
373/128 Mounting 64
373/132 Non-metallic resistor 22
373/120 Open circuit (e.g., charge internal resistance heating) 48
373/118 Resistance crucible 42
373/119 Wall contained 40


Patents under this class:
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Patent Number Title Of Patent Date Issued
8565283 Insert and a heater element for electrical furnaces Oct. 22, 2013
8476560 Thermal processing furnace Jul. 2, 2013
7838802 Radiation apparatus with capability of preventing heat convection Nov. 23, 2010
7759618 Silicon carbide heating elements Jul. 20, 2010
7619187 Porous ceramic heating element and method of manufacturing thereof Nov. 17, 2009
7423242 Oven for non-metal melting Sep. 9, 2008
7148450 Portable blackbody furnace Dec. 12, 2006
7003985 Method and apparatus for removing polymeric coatings from optical fiber in a non-oxidizing environment Feb. 28, 2006
7003014 Electric heater for thermal treatment furnace Feb. 21, 2006
6879622 Horizontal element arrangement means Apr. 12, 2005
6758902 Heater arrangement for crystal growth furnace Jul. 6, 2004
6307874 Expansion loops for heating elements in vacuum furnaces Oct. 23, 2001
6279352 Long hot zone furnace element and optical fiber drawing method practiced therewith Aug. 28, 2001
6125658 Glass furnace and installation comprising same Oct. 3, 2000
6122308 Electric resistance type melting furnace Sep. 19, 2000
6083625 Curved graphite furnace elements Jul. 4, 2000
5963580 High efficiency system for melting molten aluminum Oct. 5, 1999
5912080 Shaped graphite elements fabricated from thin graphite sheets Jun. 15, 1999
5894541 Electric heater assembly Apr. 13, 1999
5864576 Electric furnace Jan. 26, 1999
5850073 Electric heating element and heater assembly Dec. 15, 1998
5705261 Active metal metallization of mini-igniters by silk screening Jan. 6, 1998
5608838 Blackbody type heating element for calibration furnace with pyrolytic graphite coating disposed on end cap electrode members Mar. 4, 1997
5473141 Radiant tube heating assembly Dec. 5, 1995
5414927 Furnace elements made from graphite sheets May. 16, 1995
5362033 Hot plate for keeping molten metal in a molten state Nov. 8, 1994
5327454 Bridge for connecting cores in a manufacturing equipment of polycrystal silicon Jul. 5, 1994
5271032 Lid heater for glass melter Dec. 14, 1993
5265118 Silicon carbide whisker production apparatus Nov. 23, 1993
5251231 Vacuum furnace Oct. 5, 1993
5193100 Apparatus for detecting gaseous discharge in vacuum furnaces Mar. 9, 1993
5173921 Apparatus and process for activation of carbon by electrical resistance heating in the presence of steam Dec. 22, 1992
5157242 Hanging heating element for high temperature furnace Oct. 20, 1992
5136610 System for carrying a charge in a reheating furnace Aug. 4, 1992
4777022 Epitaxial heater apparatus and process Oct. 11, 1988
4701933 Method of supplying heat energy to a metal melt or the like and a heating element for use with said method Oct. 20, 1987
4606037 Apparatus for manufacturing semiconductor single crystal Aug. 12, 1986
4602238 Infrared panel emitter and method of producing the same Jul. 22, 1986
4555358 Electrically conductive sintered ceramics and ceramic heaters Nov. 26, 1985
4542513 Heater for hot isostatic pressing apparatus Sep. 17, 1985
4520487 High temperature electric furnace with metallic resistances in the form of hollow vertical heating tubes May. 28, 1985
4510609 Furnace for vertical solidification of melt Apr. 9, 1985
4503319 Heater for hot isostatic pressing apparatus Mar. 5, 1985
4490828 Electric resistance heating element and electric resistance heating furnace using the same as heat source Dec. 25, 1984
4477911 Integral heat pipe-electrode Oct. 16, 1984
4351057 Electric installation for heating of molten metals and/or salts and solutions Sep. 21, 1982
4347431 Diffusion furnace Aug. 31, 1982
4336412 Heat treatment furnace Jun. 22, 1982
4262192 Molybdenum disilicide resistance wire and support Apr. 14, 1981
4256945 Alternating current electrically resistive heating element having intrinsic temperature control Mar. 17, 1981

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