US PATENT SUBCLASS 432 / 242
.~ Having closure or seal for work feeder's entrance passage

Current as of: June, 1999
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432 /   HD   HEATING

239  DF  WORK FEEDING, AGITATING, DISCHARGING OR CONVEYING SUBCOMBINATION {7}
242.~ Having closure or seal for work feeder's entrance passage

DEFINITION

Classification: 432/242

(under subclass 239) Apparatus including a means closing or sealing an opening through which work is moved by the feeder or conveyor into the chamber.

SEE OR SEARCH THIS CLASS, SUBCLASS:

53, for a work unit handler and a furnace closure operator controlled to work in a program or cycle.

56, for means correlating door movement and work movement or placement.

64, for a heating chamber having a fluid curtain at a chamber port or work path.