US PATENT SUBCLASS 209 / 675
.~.~.~.~ Gauging passage between stationary elements (e.g., bars, slats, etc.)

Current as of: June, 1999
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209 /   HD   CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS

509  DF  SORTING SPECIAL ITEMS, AND CERTAIN METHODS AND APPARATUS (E.G., POCKET TYPE AND LIGHT RESPONSIVE SORTING, ETC.) FOR SORTING ANY ITEMS {11}
606  DF  .~ Separating means {33}
659  DF  .~.~ Sorting items by size {3}
660  DF  .~.~.~ Item of particular size passed through gauging passage between separate elements {9}
675.~.~.~.~ Gauging passage between stationary elements (e.g., bars, slats, etc.) {2}
676  DF  .~.~.~.~.~> Element adjustable to change width of gauging passage
677  DF  .~.~.~.~.~> Items move longitudinally of elongate elements {2}

DEFINITION

Classification: 209/675

Gauging passage between stationary elements (e.g., bars, slats, etc):

(under subclass 660) Methods and apparatus wherein said passage is situated between fixed elements.

SEE OR SEARCH THIS CLASS, SUBCLASS:

393+, for bar-type elements for sifting bulk material.

674, for a gauging passage between moving elements, such as the bars of a vibrating screen.