US PATENT SUBCLASS 198 / 459.3
.~.~ Rotating screw

Current as of: June, 1999
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198 /   HD   CONVEYORS: POWER-DRIVEN

434  DF  CONVEYOR SYSTEM FOR ARRANGING OR REARRANGING STREAM(S) OF ITEMS {5}
459.1  DF  .~ By longitudinally respacing successive articles in stream {7}
459.3.~.~ Rotating screw {1}
459.4  DF  .~.~.~> Varying pitch

DEFINITION

Classification: 198/459.3

Rotating screw:

(under subclass 459.1) Subject matter wherein the change in the article spacing is effected by a revolving member which turns about its axis and includes a body of cylindrical form having a plurality of helical or spiral ribs or threads.