US PATENT SUBCLASS 414 / 319
.~.~.~.~ Screw-type pickup conveyor

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
305  DF  .~.~ Including at least one discharge assistant of the compound motion type {2}
313  DF  .~.~.~ Having compound motion assistant operating on top of material {6}
319.~.~.~.~ Screw-type pickup conveyor {2}
320  DF  .~.~.~.~.~> Including plural screw elements
321  DF  .~.~.~.~.~> Including means for loosening packed material

DEFINITION

Classification: 414/319

Screw-type pickup conveyor:

(under subclass 313) Apparatus wherein the discharge assistant consists of one or more conveyors of the kind having a material-moving element in the form of a helical thread.