US PATENT SUBCLASS 198 / 455
.~.~.~.~ Including retro-moving surface

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}
443  DF  .~ By queueing items from quantity source of items into stream(s) of items {4}
453  DF  .~.~ Via throat for restricting flow of massed items {1}
454  DF  .~.~.~ With supplementary moving surfaces that form throat {1}
455.~.~.~.~ Including retro-moving surface

DEFINITION

Classification: 198/455

(under subclass 454) Apparatus wherein the movement of the additional structure is in a direction opposite to the direction of movement of the succession of articles.

(1) Note. See (1) Note to subclass 454 for exemplary movements for this subclass.