US PATENT SUBCLASS 414 / 326
.~.~.~ At least one of screw type


Current as of: June, 1999
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414 /   HD   MATERIAL OR ARTICLE HANDLING

288  DF  STATIC RECEPTACLE AND MEANS FOR CHARGING OR DISCHARGING, OR FACILITATING THE CHARGING OR DISCHARGING OF, THE RECEPTACLE {7}
304  DF  .~ Nongravity discharging means {4}
325  DF  .~.~ Including one or more driven conveyors located within or partly within receptacle for making initial pickup of material {2}
326.~.~.~ At least one of screw type


DEFINITION

Classification: 414/326

At least one of screw type:

(under subclass 325) Apparatus wherein the conveyor, or at least one of the conveyors, is of a kind consisting of a shaft having a helical thread thereon.