US PATENT SUBCLASS 432 / 164
.~.~.~ Connected for serial flow of combustion products

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  DF  .~.~ Plural structurally related work chambers {3}
164.~.~.~ Connected for serial flow of combustion products {6}
165  DF  .~.~.~.~> Having serially connected regenerator
166  DF  .~.~.~.~> Chambers spatially separated
167  DF  .~.~.~.~> Having temporary partition
168  DF  .~.~.~.~> Through perforated floor
169  DF  .~.~.~.~> Through perforated partition
170  DF  .~.~.~.~> Having branch connection to common flue

DEFINITION

Classification: 432/164

(under subclass 163) Apparatus in which the two work chambers form a common flow path for the combustion products generated in or supplied to the apparatus, the products passing first through one and then through the other of the chambers.