US PATENT SUBCLASS 414 / 795.1
.~.~.~.~ Coacting screws

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

788  DF  APPARATUS FOR MOVING INTERSUPPORTING ARTICLES INTO, WITHIN, OR FROM FREESTANDING, ORDERLY LAYERED, OR MUTUALLY STABILIZING ORDERLY GROUP {4}
788.1  DF  .~ Stack forming apparatus {17}
794.9  DF  .~.~ Positions highest article of stack first {3}
795  DF  .~.~.~ Includes rotary deliverer {1}
795.1.~.~.~.~ Coacting screws

DEFINITION

Classification: 414/795.1

Coacting screws:

(under subclass 795) Apparatus wherein there are two rotary elements which (a) each have an article engaging perimeter with a helical shape and (b) jointly support the article to be stacked as it moves toward the stack* or stacking site.