US Patent Class 209
CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS-- Main Headings



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Current as of: June, 1999
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CLASS NOTES
1  DF  MISCELLANEOUS
2  DF  SPECIAL APPLICATIONS
3  DF  PRECEDENT PREPARATION OF ITEMS OR MATERIALS TO FACILITATE SEPARATION {2}
10  DF  TREATMENT SUBSEQUENT
11  DF  WITH HEAT TREATMENT
12.1  DF  PLURAL, DIVERSE SEPARATING OPERATIONS {17}
45  DF  ADHESION {2}
127.1  DF  ELECTROSTATIC {7}
509  DF  SORTING SPECIAL ITEMS, AND CERTAIN METHODS AND APPARATUS (E.G., POCKET TYPE AND LIGHT RESPONSIVE SORTING, ETC.) FOR SORTING ANY ITEMS {11}
132  DF  FLUID SUSPENSION {2}
*  DF  MAGNETIC {2}
233  DF  SIFTING {16}
422  DF  STRATIFIERS {6}
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CROSS-REFERENCE ART COLLECTIONS
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900  DF  SORTING FLAT-TYPE MAIL
901  DF  FROTH FLOTATION; COPPER
902  DF  FROTH FLOTATION; PHOSPHATE
903  DF  FEEDER CONVEYOR HAVING OPPOSED GRIPPERS
904  DF  FEEDER CONVEYOR HOLDING ITEM BY MAGNETIC ATTRACTION
905  DF  FEEDER CONVEYOR HOLDING ITEM BY SUCTION
906  DF  PNEUMATIC OR LIQUID STREAM FEEDING ITEM
907  DF  MAGNETIC FEEDER
908  DF  ITEM FED BY FREE FALL
909  DF  ITEM HOLDING FEED MAGAZINE INSERTABLE IN SORTING APPARATUS
910  DF  FEED HOPPER
911  DF  FEED MEANS SUPPORTING OR GUIDING ITEM MOVING UNDER INFLUENCE OF GRAVITY
912  DF  ENDLESS FEED CONVEYOR WITH MEANS FOR HOLDING EACH ITEM INDIVIDUALLY
913  DF  SCREW FEED CONVEYOR
914  DF  DIVERSE SEQUENTIAL FEEDING STEPS
915  DF  CENTRIFUGAL FEEDER
916  DF  RECIPROCATING PUSHER FEEDING ITEM
917  DF  ENDLESS BELT PUSHER FEEDING ITEM
918  DF  SWINGING OR ROTATING PUSHER FEEDING ITEM
919  DF  ROTARY FEED CONVEYOR
920  DF  VIBRATORY FEED CONVEYOR
921  DF  RECIPROCATING OR OSCILLATING FEED CONVEYOR
922  DF  MISCELLANEOUS FEED CONVEYORS
923  DF  FEED THROUGH INCLUDING AT LEAST ONE ENDLESS CONVEYOR
924  DF  GRAVITY CONVEYOR MOVING ITEM FROM SEPARATING STATION
925  DF  DRIVEN OR FLUID CONVEYOR MOVING ITEM FROM SEPARATING STATION
926  DF  SILVERWARE SORTER
927  DF  COP SORTER
928  DF  CONTAINER CLOSURE SORTER
929  DF  FASTENER SORTER
930  DF  MUNICIPAL SOLID WASTE SORTING
931  DF  MATERIALS OF CONSTRUCTION
932  DF  FLUID APPLIED TO ITEMS
933  DF  ACCUMULATION RECEIVING SEPARATED ITEMS
934  DF  MOVING ITEMS TO SORTING MEANS IN SPACED RELATION LENGTHWISE OF FEED PATH
935  DF  AMBULANT
936  DF  PLURAL ITEMS TESTED AS GROUP
937  DF  LAUNDRY SORTING
938  DF  ILLUMINATING MEANS FACILITATING VISUAL INSPECTION
939  DF  VIDEO SCANNING
940  DF  NONCONDITION-RESPONSIVE SORTING BY CONTOUR
941  DF  ITEM CARRYING BRIDGE RAISABLE TO EXPOSE DISCHARGE OPENING
942  DF  OPERATOR SELECTS DESTINATION OF ITEM