US PATENT SUBCLASS 432 / 120
WORK CHAMBER HAVING HEATING MEANS

Current as of: June, 1999
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432 /   HD   HEATING

120WORK CHAMBER HAVING HEATING MEANS {12}
121  DF  .~> Having means by which work is progressed or moved mechanically {9}
156  DF  .~> Crucible or pot heating furnace {2}
159  DF  .~> Combustion products heat work by contact {19}
197  DF  .~> Having particulate or liquid heat transfer medium in work chamber
198  DF  .~> Means supplying a protective or treating agent other than or additional to air
199  DF  .~> Having work atmosphere recirculating means
200  DF  .~> Work chamber having gaseous material supply or removal structure {2}
206  DF  .~> Interior bell forms muffle
207  DF  .~> Plural structurally related work heating chambers {1}
209  DF  .~> Heating tube, element, or flue traverses work space
210  DF  .~> Externally heated, liquid holding type of work container {1}
212  DF  .~> Tortuous, branched or baffled heating flue means within or along chamber wall {1}

DEFINITION

Classification: 432/120

(under the class definition) Apparatus including (1) a chamber for containing work to be heated and (2) a source of heat heating the work.

SEE OR SEARCH THIS CLASS, SUBCLASS:

219+, for residual apparatus for heating liquid or gaseous work in a flowing stream.

SEE OR SEARCH CLASS

34, Drying and Gas or Vapor Contact With Solids,

201+, for a drier comprising a house, kiln, or container. See the search class notes in the class definition for the line between Classes 34 and 432.

126, Stove and Furnaces, 19+, for a domestic cooking stove having an oven; subclass 343.5 for a melting furnace; and subclass 344 for an open water heater.

219, Electric Heating,

385+, for specific electrical heating structure heating work in or on a container, enclosure, or support.

237, Heating Systems, appropriate subclass, for a system for heating a room, house or other enclosing structure including combinations of two or more heat generators or a heat generator combined with a system for distributing the heat.

249, Static Molds,

78, and 79+ for a material shaping mold having heating means.