CLASS 373, INDUSTRIAL ELECTRIC HEATING FURNACES |
1 | PLURAL DIVERSE HEATING MEANS: |
This subclass is indented under the class definition. Subject matter including plural, different in kind, or type heating elements.
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2 | . Arc: |
This subclass is indented under subclass 1. Subject matter wherein one of the heating elements is an electric arc between two
electrodes, or between an electrode and a current carrying material
(e.g., the charge material).
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3 | .. With resistance: |
This subclass is indented under subclass 2. Subject matter including means to develop heat by the passage of current
through a material, or device having the property of electrical
resistance.
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4 | .. With induction: |
This subclass is indented under subclass 2. Subject matter including means to produce heat in a charge by placing it in
an electromagnetic relationship with an inducing winding, the charge
forming the secondary.
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5 | . Resistance: |
This subclass is indented under subclass 1. Subject matter wherein one of the heating elements is a means to develop
heat by the passage of current through a material, or device having
the property of electrical resistance.
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6 | .. With induction: |
This subclass is indented under subclass 5. Subject matter including means to produce heat in a charge by placing it in
an electromagnetic relationship with an inducing winding, the charge
forming the secondary.
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7 | . Induction: |
This subclass is indented under subclass 1. Subject matter including means to produce heat in a charge by placing it in
an electromagnetic relationship with an inducing winding, the charge
forming the secondary.
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8 | ENVIRONMENTAL CONTROL: |
This subclass is indented under the class definition. Subject matter including means to withdraw furnace gases, or to trap dust
and fumes escaping from the furnace while in operation.
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9 | . Arc furnace: |
This subclass is indented under subclass 8. Subject mater wherein, the furnace heating element is an electric arc between
two electrodes, or between an electrode and a current carrying material
(e.g., the charge material).
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10 | ELECTRON BEAM FURNACE DEVICE: |
This subclass is indented under the class definition. Subject matter wherein heat is generated to melt charge material by the
effects of the impingement, of a directed beam, of accelerated electrons
on the charge.
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11 | . Vaporizing furnace: |
This subclass is indented under subclass 10. Subject matter wherein the charge is heated by the electron beam to a gaseous
state.
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12 | .. Power supply and control circuit: |
This subclass is indented under subclass 11. Subject matter including means to regulate and power the operation of the
vaporizing furnace.
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13 | .. Gun assembly: |
This subclass is indented under subclass 11. Subject matter including the component structure of the means which emits the
electron beam.
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14 | ... With deflection control: |
This subclass is indented under subclass 13. Subject matter including means to regulate the path of the electron beam. | |
15 | . Ingot remelting: |
This subclass is indented under subclass 10. Subject matter wherein a previously melted and subsequently solidified ingot
charge is remelted by the furnace.
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16 | . With plural beam devices: |
This subclass is indented under subclass 10. Subject matter wherein the furnace has more than one electron beam gun. | |
17 | . Zone melting: |
This subclass is indented under subclass 10. Subject matter wherein a small area, or zone of the charge is liquified
by the electron beam.
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18 | PLASMA FURNACE DEVICE: |
This subclass is indented under the class definition. Subject matter including a plasma generating means as the heat source to
melt, or otherwise treat the material within the furnace device.
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19 | . Indirect heating: |
This subclass is indented under subclass 18. Subject matter wherein the material being heated is heated principally
by heat radiation from the plasma flame, without direct contact
with the flame.
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20 | .. Rotary furnace: |
This subclass is indented under subclass 19. Subject matter wherein the furnace is rotated, generally about its longitudinal
axis.
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21 | . Remelting furnace (i.e., ingot remelting): |
This subclass is indented under subclass 18. Subject matter wherein the plasma furnace remelts ingots produced from
a previous melting/costing process.
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22 | . Direct furnace (i.e., plasma flame impinges on the melt): |
This subclass is indented under subclass 18. Subject matter wherein the plasma flame is in contact with the material being
melted.
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23 | .. Expanded arc column: |
This subclass is indented under subclass 22. Subject matter wherein the plasma flame expands, usually in a conical shape, as it extends away from the plasmatron. | |
24 | .. Sidewall mounted plasmatron: |
This subclass is indented under subclass 22. Subject matter wherein the plasmatron means extends through and is supported
by the furnace sidewall.
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25 | .. Control system: |
This subclass is indented under subclass 22. Subject matter including means to regulate the operation of the furnace.
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26 | GLOW DISCHARGE FURNACE DEVICE: |
This subclass is indented under the class definition. Subject matter wherein the heat is produced from a glow discharge generated
within the furnace.
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27 | GLASS FURNACE DEVICE: |
This subclass is indented under the class definition. Subject matter specifically adapted for melting, or treating glass or silica.
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28 | . Filament discharge (i.e., bushing): |
This subclass is indented under subclass 27. Subject matter wherein the glass is melting in a bushing from which the molten
glass is discharged as filaments, the bushing being heated by passing
a current therethrough.
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29 | . Joule effect heating: |
This subclass is indented under subclass 27. Subject matter wherein the glass is melted, or maintained in a molten condition
by passing an electric current therethrough between at least two
electrodes.
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30 | .. Furnace body detail: |
This subclass is indented under subclass 29. Subject matter pertaining to the furnace body or tank for holding the molten glass.
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31 | ... Multichamber: |
This subclass is indented under subclass 30. Furnaces which are composed of at least two discrete interconnected sections.
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32 | .... With heating between chambers: |
This subclass is indented under subclass 31. Subject matter including heating means mounted in the passageway between the plural furnace sections, or including furnaces where the heating current flows between electrodes mounted one in each furnace section. | |
33 | .. Charging or discharging: |
This subclass is indented under subclass 29. Subject matter including means to supply, or remove material to be heated,
to or from the furnace.
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34 | ... Including batch preheating: |
This subclass is indented under subclass 33. Subject matter wherein the batch is heated prior to being charged into
the furnace, also preheating may be achieved by utilizing the waste
heat from the furnace, or by means of a separate heat source.
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35 | ... Including discharge area heating: |
This subclass is indented under subclass 33. Subject matter wherein means are provided at, or near the discharge opening
of the furnace to heat the material as it is discharged.
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36 | .. Electrode assembly: |
This subclass is indented under subclass 29. Subject matter pertaining to the electrode, its holder and associate structure.
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37 | ... Protection means: |
This subclass is indented under subclass 36. Subject matter including means to protect the electrode from excessive deterioration
while in use.
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38 | ... Holder: |
This subclass is indented under subclass 36. Subject matter including apparatus to support the electrode while in use.
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39 | .. Electrical system: |
This subclass is indented under subclass 29. Subject matter including means to supply electrical power to the furnace.
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40 | ... Regulation: |
This subclass is indented under subclass 39. Subject matter including means to regulate the electrical power supplied to
the furnace.
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41 | ... Electrode arrangement (e.g., array): |
This subclass is indented under subclass 39. Subject matter wherein the electrodes are arranged in the furnace to achieve
specific electrical characteristics within the melt (e.g., for specific
heating patterns in the melt, or to eliminate overlap between heating
currents).
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42 | ELECTROSLAG REMELTING DEVICE: |
This subclass is indented under the class definition. Subject matter wherein during electrode remelting the electrode is immersed
in a slag layer which floats on top of the melt.
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43 | . Plural furnace units: |
This subclass is indented under subclass 42. Subject matter wherein more than one furnace unit, or crucible is provided
at one location for cooperative simultaneous, or sequential operation.
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44 | . Body detail: |
This subclass is indented under subclass 42. Subject matter including details of the furnace structure.
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45 | .. Crucible: |
This subclass is indented under subclass 44. Subject matter including the part which holds the melt.
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46 | . Start-up: |
This subclass is indented under subclass 42. Subject matter having means for adding material to the furnace to initiate
operation.
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47 | . Power supply system: |
This subclass is indented under subclass 42. Subject matter including means to supply electrical power to the furnace.
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48 | .. Conductor arrangement: |
This subclass is indented under subclass 47. Subject matter relating to the arrangement (e.g., spacing) of the power conductors of the furnace. | |
49 | .. Control: |
This subclass is indented under subclass 47. Subject matter wherein means are provided to control or regulate electrical
power to the furnace.
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50 | ... By changing electrode position: |
This subclass is indented under subclass 49. Subject matter wherein the power is regulated by changing the depth of immersion
of the electrode into the slag.
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51 | . Electrode replacement: |
This subclass is indented under subclass 42. Subject matter including apparatus to refit and reposition electrode during
furnace operation.
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52 | . Electrode support: |
This subclass is indented under subclass 42. Subject matter including apparatus to support and hold the electrode during
remelting.
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53 | .. Plural electrodes: |
This subclass is indented under subclass 52. Subject matter for supporting more than one electrode simultaneously.
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54 | . Electrode: |
This subclass is indented under subclass 42. Subject matter including the shape, or composition of electrodes utilized in the electroslag remelting furnace. | |
55 | .. With protective shield: |
This subclass is indented under subclass 54. Subject matter wherein the electrode is provided with sheltering, or screening
means.
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56 | WITH CONDENSATING DEVICE: |
This subclass is indented under the class definition. Subject matter specifically adapted for reducing gaseous volatile material.
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57 | . Including resistance furnace detail: |
This subclass is indented under subclass 56. Subject matter including a furnace having a means to develop heat by the passage
of current through a material, or device having the property of
electrical resistance.
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58 | .. With open circuit (e.g., charge internal resistance heating): |
This subclass is indented under subclass 57. Subject matter wherein the charge completes the circuit and the internal resistance
of the charge is the heating element.
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59 | . Including induction furnace detail: |
This subclass is indented under subclass 56. Subject matter including an induction coil to subject the charge to a variable
electromagnetic field for producing a heating current by internal
resistance losses in the charge.
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60 | ARC FURNACE DEVICE: |
This subclass is indented under the class definition. Subject matter wherein the charge is heated by means of an electric arc
produced between opposed electrodes (indirect arc furnaces) or between
an electrode and the charge (direct arc furnaces).
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61 | . Indirect: |
This subclass is indented under subclass 60. Subject matter wherein the arc is between spaced electrodes, or between an electrode and the crucible exterior and the material is heated by radiation from the arc. | |
62 | .. Arc between spaced electrodes: |
This subclass is indented under subclass 61. Subject matter the arc is between spaced electrodes and the material is heated by radiation from the arc. | |
63 | ... Charge fed into space: |
This subclass is indented under subclass 62. Subject matter wherein the charge passes through the arc as it is added to the furnace. | |
64 | ... Wish arc deflection means: |
This subclass is indented under subclass 62. Subject matter including means (usually a magnet) to deflect the arc from its normal path. | |
65 | .. Arc between electrode and crucible exterior: |
This subclass is indented under subclass 61. Subject matter wherein the arc is drawn between the electrode tip and the exterior of the crucible. | |
66 | .. Combined with or convertible to direct arc furnace: |
This subclass is indented under subclass 61. Subject matter including both direct and indirect arc heating, or which may be changed from one to the other. | |
67 | . Ingot remelting: |
This subclass is indented under subclass 60. Subject matter wherein the electrode is metal mass which is reheated to liquification to form the charge of the furnace. | |
68 | .. With internal atmosphere control (e.g., pressure, vacuum, etc.): |
This subclass is indented under subclass 67. Subject matter wherein the environment within the remelting furnace is regulated
to have a specific pressure, a vacuum, or a specific medium.
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69 | .. With electrode holder or guide: |
This subclass is indented under subclass 67. Subject matter including means to support, or at least partially contain the
electrode, or means to direct the position, or movement of the electrode.
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70 | .. With power regulation: |
This subclass is indented under subclass 67. Subject matter including means to control the arc heating capability either, by maintaining a desired electrical power input, or by maintaining a desired arc length. | |
71 | . Furnace body detail: |
This subclass is indented under subclass 60. Subject matter including details of the furnace structure. | |
72 | .. Hearth or crucible: |
This subclass is indented under subclass 71. Subject matter including the part of the furnace structure which holds the molten material. | |
73 | .. Roof: |
This subclass is indented under subclass 71. Subject matter including a cover, or lid for the furnace. | |
74 | ... With cooling: |
This subclass is indented under subclass 73. Subject matter including a means to remove, or reduce heat from the roof. | |
75 | .. Sidewall: |
This subclass is indented under subclass 71. Subject matter including means forming the furnace sidewalls. | |
76 | ... With cooling: |
This subclass is indented under subclass 75. Subject matter including means to remove, or reduce heat from the sidewalls
of the furnace.
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77 | .. With internal atmosphere control (e.g., pressure, vacuum, etc.): |
This subclass is indented under subclass 71. Subject matter wherein the furnace body is sealed and means are provided to increase the pressure within the furnace, or to create a vacuum therein. | |
78 | . Plural furnace units: |
This subclass is indented under subclass 60. Subject matter wherein more than one complete furnace is provided in the
same general location for cooperative simultaneous, or sequential
operation.
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79 | . Charging or discharging: |
This subclass is indented under subclass 60. Subject matter including means to supply charge material to the furnace, or means to let out the heated charge from the furnace. | |
80 | .. With charge preheating: |
This subclass is indented under subclass 79. Subject matter including means to heat the charge prior to heating the charge within the furnace. | |
81 | .. Top charging: |
This subclass is indented under subclass 79. Subject matter including specific means to charge the furnace from the top.
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82 | ... Through electrode: |
This subclass is indented under subclass 81. Subject matter wherein the furnace is charged through a hollow electrode.
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83 | .. Bottom pour: |
This subclass is indented under subclass 79. Subject matter wherein the hearth, or crucible includes means in its bottom, or lowest point to discharge the molten charge of the furnace. | |
84 | .. Discharge by tilting: |
This subclass is indented under subclass 79. Subject matter wherein the furnace is inclined to allow the discharge of its molten charge contents. | |
85 | . For manipulation of the charge or melt (e.g., stirring): |
This subclass is indented under subclass 60. Subject matter wherein means is provided to mix, agitate, or otherwise move
the furnace charge while it is within the furnaces.
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86 | .. Mechanical: |
This subclass is indented under subclass 85. Subject matter wherein the stirring device is mechanically operated. | |
87 | .. Crust breaking device: |
This subclass is indented under subclass 85. Subject matter for poking the top of the furnace charge to fracture incrustation of the molten charge material. | |
88 | . Electrode: |
This subclass is indented under subclass 60. Subject matter including the structure, or composition of the electrode means.
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89 | .. Self-baking (i.e., soderberg): |
This subclass is indented under subclass 88. Subject matter wherein an electrode means is made in situ by adding raw electrode
material in the form of a paste to an electrode casing above the
furnace, forcing the paste down the casing whereby it bakes into
a solid electrode as it enters into the furnace.
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90 | .. Nonconsumable: |
This subclass is indented under subclass 88. Subject matter wherein the electrode means remains substantially intact during
operation.
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91 | .. Sectional: |
This subclass is indented under subclass 88. Subject matter including electrode segments joined together to form a unitary
electrode.
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92 | ... With means to join sections: |
This subclass is indented under subclass 91. Subject matter including means to connect the electrode segments. | |
93 | .. Composite (e.g., water cooled body with carbon tip): |
This subclass is indented under subclass 88. Subject matter wherein the electrode is composed of a water cooled top section and a replaceable, usually carbon, bottom, or tip portion. | |
94 | . Electrode support: |
This subclass is indented under subclass 60. Subject matter including structural means to support the electrode means above the melt during operation of the furnace. | |
95 | .. Seal: |
This subclass is indented under subclass 94. Subject matter including means to close off the interstices between the electrode means and openings in the furnace roof, or sidewall through which the electrode means extends to prevent the escape of fumes, etc., from the furnace. | |
96 | .. With electrode shield: |
This subclass is indented under subclass 94. Subject matter including means surrounding the electrode to protect it as it is suspended over the melt. | |
97 | .. For soderbert electrode (i.e., casing): |
This subclass is indented under subclass 94. Subject matter including a casing means into which electrode material in the form of a paste is fed and from which the baked electrode emerges. | |
98 | .. Mast: |
This subclass is indented under subclass 94. Subject matter wherein the support system arrangements extends vertically, adjacent the furnace body, and forms a support for the electrode crosshead. | |
99 | ... Crosshead: |
This subclass is indented under subclass 98. Subject matter which extend horizontally from the mast and have a clamp to hold the electrode suspended over the melt. | |
100 | .. Slipping holder: |
This subclass is indented under subclass 94. Subject matter including holder, or support means to permit selective slippage of a consumable electrode into the furnace. | |
101 | .. With electrical contact or terminal: |
This subclass is indented under subclass 94. Subject matter including means to connect the electrode to the power supply circuit. | |
102 | . Power supply system: |
This subclass is indented under subclass 60. Subject matter including means to provide electric power for the arc.
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103 | .. Cable or cable suspension arrangement: |
This subclass is indented under subclass 102. Subject matter including power cable construction, or hanging support details. | |
104 | .. With power regulation: |
This subclass is indented under subclass 102. Subject matter including means to control the electrical power to the arc.
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105 | ... By changing arc length: |
This subclass is indented under subclass 104. Subject matter wherein the arc power is regulated by changing the positions of the arc electrodes relative to the charge or each other. | |
106 | .... Using hydraulic or pneumatic device: |
This subclass is indented under subclass 105. Subject matter wherein the adjustment means includes a hydraulically, or pneumatically operated means. | |
107 | .. With magnetically influenced arc: |
This subclass is indented under subclass 102. Subject matter including magnetic means to rotate, deflect, or otherwise effect change in the arc parameter. | |
108 | .. D.C. power: |
This subclass is indented under subclass 102. Subject matter wherein the electric power is supplied by direct current. | |
109 | RESISTANCE FURNACE DEVICE: |
This subclass is indented under the class definition. Subject matter including electrical resistance means as the heating element.
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110 | . With internal atmosphere control (e.g., pressure, vacuum, etc.): |
This subclass is indented under subclass 109. Subject matter wherein the environment within the furnace housing is regulated
to have a specific pressure, a vacuum, or a specific medium.
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111 | .. Having tubular charge containing or supporting element: |
This subclass is indented under subclass 110. Subject matter wherein the means holding, or holding up the charge has a cylindrical shape. | |
112 | .. Vacuum: |
This subclass is indented under subclass 110. Subject matter wherein the environment within the furnace housing is regulated
to have a vacuum.
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113 | . For cooling: |
This subclass is indented under subclass 109. Subject matter including means for lowering the temperature of the resistance
furnace device.
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114 | .. Terminal: |
This subclass is indented under subclass 113. Subject matter wherein the furnace device being cooled is the electrode terminal. | |
115 | . Charging or discharging: |
This subclass is indented under subclass 109. Subject matter including devices for supplying the charge into the furnace,
or taking the charge out of the furnace.
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116 | . For manipulation of the charge or melt (e.g., stirring): |
This subclass is indented under subclass 109. Subject matter including means to mix, agitate, or otherwise move the charge
within a furnace heating chamber.
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117 | . With heating element detail: |
This subclass is indented under subclass 109. Subject matter including specific features of the electrical resistance means.
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118 | .. Resistance crucible: |
This subclass is indented under subclass 117. Subject matter wherein the heating element is an electrically conductive vessel
for containing the charge of the furnace.
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119 | .. Wall contained: |
This subclass is indented under subclass 117. Subject matter wherein the heating element is located within the wall of the furnace. | |
120 | .. Open circuit (e.g., charge internal resistance heating): |
This subclass is indented under subclass 117. Subject matter wherein a molten material completes the circuit and the internal
resistance of the molten material is the heating element.
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121 | ... Salt bath heating: |
This subclass is indented under subclass 120. Subject matter wherein a salt is melted by passing electric current through
it and the charge is immersed in the salt and is heated by conduction,
with the salt performing the dual function of resistance medium
and heat-transfer medium.
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122 | ... Including crucible or hearth structure details: |
This subclass is indented under subclass 120. Subject matter including structural details of the means which holds the melt.
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123 | ... With preheating: |
This subclass is indented under subclass 120. Subject matter including means to preheat the principal heating means of the furnace to a temperature for rendering the heating means electrically conductive. | |
124 | .... Including starting resistor: |
This subclass is indented under subclass 123. Subject matter including a resistor which is the preheating means. | |
125 | ... Including terminal detail: |
This subclass is indented under subclass 120. Subject matter including specific structural details of the connection point between the charge, or melt and the electrical power supply. | |
126 | .... With axial bore: |
This subclass is indented under subclass 125. Subject matter wherein the terminal has an axially hollow interior extending therethrough. | |
127 | .. Having resistance encasement means: |
This subclass is indented under subclass 117. Subject matter including an enclosure for the resistance heating element.
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128 | .. Mounting: |
This subclass is indented under subclass 117. Subject matter with details of the means for attaching the heating element to
some other part of the furnace.
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129 | ... Base: |
This subclass is indented under subclass 128. Subject matter wherein the heating element is attached to the base of the furnace. | |
130 | ... Side wall: |
This subclass is indented under subclass 128. Subject matter wherein the heating element is attached to a vertical wall
of the furnace.
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131 | .... With resistor element compression: |
This subclass is indented under subclass 130. Subject matter wherein the resistor element is subjected to pressure. | |
132 | .. Nonmetallic resistor: |
This subclass is indented under subclass 117. Subject matter including a resistor heating element comprised of a material which is metal free. | |
133 | ... Rodlike: |
This subclass is indented under subclass 132. Subject matter wherein the resistor heating element has the shape of an elongated cylinder, or bar. | |
134 | .. Including resistor shape detail: |
This subclass is indented under subclass 117. Subject matter including significant details of the shape of the resistor. | |
135 | . Control: |
This subclass is indented under subclass 109. Subject matter including circuitry for regulating the furnace operation.
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136 | .. Temperature: |
This subclass is indented under subclass 135. Subject matter including means to control the temperature of the furnace.
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137 | . Lining: |
This subclass is indented under subclass 109. Subject matter including covering means for the interior walls of the furnaces.
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138 | INDUCTION FURNACE DEVICE: |
This subclass is indented under the class definition. Subject matter including an induction coil to subject the charge to a variable
electromagnetic field for producing a heating current by internal
resistance losses in the charge.
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139 | . Zone melting: |
This subclass is indented under subclass 138. Subject matter wherein a narrow portion of a solid charge is liquified
by the heating means.
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140 | . With internal atmosphere control (e.g., pressure, vacuum, etc.): |
This subclass is indented under subclass 138. Subject matter including means to regulate the surrounding conditions of
the charge.
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141 | .. Vacuum: |
This subclass is indented under subclass 140. Subject matter wherein the atmosphere is an enclosed space from which air, or other gases have been removed. | |
142 | . For charging or discharging: |
This subclass is indented under subclass 138. Subject matter including means to supply charge material to the furnace, or
means to let out the heated charge from the furnace.
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143 | .. By tilting: |
This subclass is indented under subclass 142. Subject matter wherein the furnace, or a portion thereof is inclined from its vertical position to either charge, or discharge the furnace. | |
144 | . Having plural heating elements: |
This subclass is indented under subclass 138. Subject matter including more than one inductive heating means for a single
furnace.
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145 | . Having condition signaling means: |
This subclass is indented under subclass 138. Subject matter including means for monitoring and indicating a characteristic
of the furnace operation.
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146 | . With means for manipulation of the charge or melt (e.g., stirring): |
This subclass is indented under subclass 138. Subject matter including means to mix, agitate, or otherwise move the charge
within a furnace heating chamber.
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147 | . Power supply system: |
This subclass is indented under subclass 138. Subject matter including means to provide electrical current and voltage for
the induction furnace device.
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148 | .. Regulating: |
This subclass is indented under subclass 147. Subject matter including means to control the power supplied to the furnace
device.
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149 | . For furnace regulating: |
This subclass is indented under subclass 138. Subject matter including means to control the operation of the furnace. | |
150 | .. Electrical: |
This subclass is indented under subclass 149. Subject matter wherein the control means is electrically actuated.
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151 | . Coreless: |
This subclass is indented under subclass 138. Subject matter wherein the induced current is produced without using a magnetic-core
material.
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152 | .. Coil: |
This subclass is indented under subclass 151. Subject matter wherein the induced current is produced by wrapping a current
carrying wire around the charge, or around means intermediate the
charge and the wire.
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153 | ... Support: |
This subclass is indented under subclass 152. Subject matter including means to hold, or maintain the coil in a particular configuration with respect to the furnace. | |
154 | ... Cooling: |
This subclass is indented under subclass 152. Subject matter including means to reduce heat generated in the coil.
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155 | .. Lining: |
This subclass is indented under subclass 151. Subject matter including material covering the interior surface of the crucible,
or furnace.
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156 | .. Crucible: |
This subclass is indented under subclass 151. Subject matter including means to contain the charge while the charge is being
heated.
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157 | ... Conducting (e.g., graphite): |
This subclass is indented under subclass 156. Subject matter wherein the crucible is constructed of material which allows the flow of electric current. | |
158 | .. Cooling: |
This subclass is indented under subclass 151. Subject matter including means to reduce heat generated by the coreless furnace
device.
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159 | . Core-type (i.e., channel): |
This subclass is indented under subclass 138. Subject matter wherein the induced current is produced using a magnetic-core
material.
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160 | .. Coil: |
This subclass is indented under subclass 159. Subject matter wherein the induced current is produced by wrapping a current
wire around the charge, or around means intermediate the charge
and the wire.
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161 | .. Channel: |
This subclass is indented under subclass 159. Subject matter including details of the charge channel structure, or composition. | |
162 | ... Lining: |
This subclass is indented under subclass 161. Subject matter including material covering the interior surface of the channel.
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163 | .. Crucible or hearth: |
This subclass is indented under subclass 159. Subject matter including means to contain the charge while the charge is being
heated.
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164 | .. Lining: |
This subclass is indented under subclass 159. Subject matter including material covering the interior surface of the crucible.
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165 | .. Cooling: |
This subclass is indented under subclass 159. Subject matter including means to reduce heat generated by the core-type
furnace device.
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166 | MISCELLANEOUS: |
This subclass is indented under the class definition. Subject matter including electric furnace device details not provided for in the other subclasses of this class. | |
FOR000 | CLASS-RELATED FOREIGN DOCUMENTS |
This subclass has no definition. | |