(under the class definition) Processes which are directed to (1) maintaining, restoring, or rebuilding a damaged, defective, or worn furnace lining or (2) forming an original interior layer on the furnace wall which remains in place during furnace use.
(1) Note. This is the residual home for furnace lining formation or repair not elsewhere provided for. In general, however, the combination of building a furnace and applying a lining to the interior thereof is classified in the class providing for the particular method of building the furnace. For classes which provide for furnaces and furnace lining, see the notes below.
SEE OR SEARCH THIS CLASS, SUBCLASS:
36, for processes under the class definitions for repairing or restoring articles, per se.
SEE OR SEARCH CLASS
29, Metal Working,
402.01+, especially 402.18 for repairing processes which include only mechanical assembly and joining operations. 52, Static Structures (e.g., Buildings),
741.1+, and 745.01+ for processes of assembling or in situ erection of a building involving more than repair by a process for Class 264.
65, Glass Manufacturing,
27, for processes of repairing apparatus for that class.
75, Specialized Metallurgical Processes, Compositions for Use Therein, Consolidated Metal Powder Compositions, and Loose Metal Particulate Mixtures,
301, for reactive furnace linings.
110, Furnaces,
343, for a process of treating solid fuel furnace constituents to prevent corrosion of the furnace.
122, Liquid Heaters and Vaporizers, appropriate subclass for furnace structures provided therein under the class definition.
126, Stoves and Furnaces, particularly
144+, for linings. 156, Adhesive Bonding and Miscellaneous Chemical Manufacture,
94+, for processes of repairing articles by a laminating process.
252, Compositions,
500+, for furnace lining composition or linings defined only in terms of their composition when the composition is electrically conductive.
266, Metallurgical Apparatus, appropriate subclass for metallurgical furnaces, particularly
280+, for linings.
373, Industrial Electric Heating Furnaces,
137, 155 and 164.
422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing, appropriate subclasses for furnaces for carrying out chemical reactions.
427, Coating Processes,
140+, for restoring or repairing by a coating process.
432, Heating, 3, for a residual process of heater operation including a step of repairing, converting or assembling the heater.
501, Compositions: Ceramic, appropriate subclasses for ceramic compositions, per se.
520, Synthetic Resins or Natural Rubbers, appropriate subclasses, particularly Class 523,
141, for a composition containing a synthetic resin or natural rubber having utility for a metallurgical furnace or oven apparatus or to processes of preparing said composition.
