US PATENT SUBCLASS 432 / 78
.~ Combustion feed air cools exiting work by contact

Current as of: June, 1999
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432 /   HD   HEATING

77  DF  WITH WORK COOLING STRUCTURE {5}
78.~ Combustion feed air cools exiting work by contact {2}
79  DF  .~.~> Contact at discharge end section of shaft furnace
80  DF  .~.~> Work manipulated in cooling zone

DEFINITION

Classification: 432/78

(under subclass 77) Apparatus in which the heat removed from the work is transferred to air on its way to a burner of the work heating apparatus.