US PATENT SUBCLASS 432 / 106
.~.~ Including plural, distinct serially connected work chambers

Current as of: June, 1999
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432 /   HD   HEATING

103  DF  TUMBLER-TYPE ROTARY - DRUM FURNACE {8}
105  DF  .~ Having combustion products generated in or fed to drum {3}
106.~.~ Including plural, distinct serially connected work chambers

DEFINITION

Classification: 432/106

(under subclass 105) Apparatus in which (1) the drum includes two distinct chambers connected to provide for serial flow of work material or (2) the drum has connected thereto a separate chamber that received work from or feeds it to the drum chamber.