US PATENT SUBCLASS 432 / 247
HEATING OR HEAT RETAINING WORK CHAMBER STRUCTURE

Current as of: June, 1999
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432 /   HD   HEATING

247HEATING OR HEAT RETAINING WORK CHAMBER STRUCTURE {5}
248  DF  .~> Protected, lined or reinforced melt holding section
249  DF  .~> Including baffle wall, work shield, or work support element
250  DF  .~> Door, cover or port
251  DF  .~> Having expansion relieving or absorbing means
252  DF  .~> Masonry with metallic casing or support

DEFINITION

Classification: 432/247

(under the class definition) Apparatus forming the work chamber of an apparatus specialized for heating work or for use in controlling the drop in temperature of highly heated work toward ambient temperature.

SEE OR SEARCH CLASS

52, Static Structures (e.g. Buildings), appropriate subclass for a residual static structure; particularly

415+, for a structure assembled of bricks.

110, Furnaces,

317+, for the structure of a solid fuel combustion furnace.

220, Receptacles, 560.12+, and 592.01+ for a receptacle having insulation or other means to maintain its contents above or below ambient temperature.