US PATENT SUBCLASS 432 / 154
.~.~.~ Screw-type pusher

Current as of: June, 1999
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432 /   HD   HEATING

120  DF  WORK CHAMBER HAVING HEATING MEANS {12}
121  DF  .~ Having means by which work is progressed or moved mechanically {9}
153  DF  .~.~ Work or work carrier slides on heated chamber wall or floor {1}
154.~.~.~ Screw-type pusher

DEFINITION

Classification: 432/154

(under subclass 153) Apparatus in which there is a pitched blade rotatable about an axis extending along the heated surface for sliding work along the surface.