US PATENT SUBCLASS 34 / 613
.~.~.~ Coacting parallel threaded members

Current as of: June, 1999
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34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

523  DF  APPARATUS {40}
611  DF  .~ Sheet, web, or strand {3}
612  DF  .~.~ Sheet elevator type {1}
613.~.~.~ Coacting parallel threaded members

DEFINITION

Classification: 34/613

Coacting parallel threaded members:

(under subclass 612) Subject matter wherein the elevator mechanism is made up of two nondiverging, screwlike members wherein the material is positioned between the two members and in the threads such that the material is elevated by turning the screws.