US PATENT SUBCLASS 198 / 454
.~.~.~ With supplementary moving surfaces that form throat

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.~.~.~ With supplementary moving surfaces that form throat {1}
455  DF  .~.~.~.~> Including retro-moving surface

DEFINITION

Classification: 198/454

(under subclass 453) Apparatus provided with structure additional to said article-moving means, which additional structure includes a face or area that contacts the articles passing thereby, and which additional structure is moved relative to the movement of the article-moving means.

(1) Note. The additional movement may be at right angles to or in the direction of movement of the stream, but the purpose is to facilitate passage of single articles in succession. For additional movement counter to the direction of stream movement (either unidirectional or vibratory) see subclass 455 indented hereunder.