US PATENT SUBCLASS 432 / 121
.~ Having means by which work is progressed or moved mechanically

Current as of: June, 1999
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432 /   HD   HEATING

120  DF  WORK CHAMBER HAVING HEATING MEANS {12}
121.~ Having means by which work is progressed or moved mechanically {9}
122  DF  .~.~> Having manipulating means arranging, orienting, segregating or topically heating individual unit {4}
128  DF  .~.~> Plural distinct chambers {2}
134  DF  .~.~> Vibrating or jarring-type work advancer
135  DF  .~.~> Traveling heat emitter carries or stirs work
136  DF  .~.~> Combustion products generated in or fed to chamber {4}
151  DF  .~.~> Stirrer in externally heated tank
152  DF  .~.~> Having distinct atmosphere supply, removal or recirculation structure
153  DF  .~.~> Work or work carrier slides on heated chamber wall or floor {1}
155  DF  .~.~> Chamber heated by multiple combustion products flues

DEFINITION

Classification: 432/121

(under subclass 120) Apparatus including (1) mechanism which carries or moves or stirs work material in bulk or as a unit or (2) structure by which work is directed, guided, or otherwise caused to move progressively through or along different sections of a heating chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

162, for an unmechanized shelf, rack or tray on a guide or pivot carrying work into a heating chamber but not progressing it therein.

SEE OR SEARCH CLASS

99, Foods and Beverages: Apparatus,

360+, for an oven specialized to cooking food having a conveyor for the food.