US PATENT SUBCLASS 432 / 163
.~.~ Plural structurally related work chambers

Current as of: June, 1999
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432 /   HD   HEATING

120  DF  WORK CHAMBER HAVING HEATING MEANS {12}
159  DF  .~ Combustion products heat work by contact {19}
163.~.~ Plural structurally related work chambers {3}
164  DF  .~.~.~> Connected for serial flow of combustion products {6}
171  DF  .~.~.~> Diverse atmospheres (e.g., directly and indirectly heated, etc.)
172  DF  .~.~.~> Fed with combustion products from a common generator

DEFINITION

Classification: 432/163

(under subclass 159) Apparatus including means forming two distinct work chambers that are parts of the same material heating apparatus.

SEE OR SEARCH THIS CLASS, SUBCLASS:

106, for plural distinct serially connected work chambers, one of which is of the rotary drum tumbler type; and subclasses 128+ for plural distinct chambers having means for progressing work or moving it mechanically.