Manual of U.S. Patent Classification
as of June 30, 2000

Class
209
CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS

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Subclass definitions may be accessed by clicking on the subclass number, below.

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Subclass		Title
ClassTitle		===> CLASSIFYING, SEPARATING, AND ASSORTING SOLIDS
1		MISCELLANEOUS
2		SPECIAL APPLICATIONS
3		PRECEDENT PREPARATION OF ITEMS OR MATERIALS TO FACILITATE SEPARATION
3.1		. Sorting special items or sorting by methods and apparatus includible in subclasses 509 through 707
3.2		. . Condition responsive sensor controlling preparation
3.3		. . Marking or tagging item
4		. Selective differentiation
5		. . Deflocculation and flocculation
7		. . Form
8		. . Magnetizing and demagnetizing
9		. . Surface
10		TREATMENT SUBSEQUENT
11		WITH HEAT TREATMENT
12.1		PLURAL, DIVERSE SEPARATING OPERATIONS
12.2		. Including electrostatic
13		. Aqueous suspension, sifting, and stratifying
14		. Mercurial adhesion, sifting, and stratifying
19		. Gaseous suspension, sifting, and stratifying
15		. Mercurial suspension or adhesion and fluid suspension
16		. . Aqueous suspension
17		. Aqueous suspension and sifting
18		. Aqueous suspension and stratifying
20		. Gaseous suspension and stratifying
21		. Gaseous suspension and sifting
22		. . Coincident
23		. . . With deposition
24		. . . Horizontal current
25		. . . . With deposition
26		. . . Inclined current
27		. . . . With deposition
28		. . . Vertical current
29		. . . . With deposition
30		. . Successive
31		. . . With deposition
32		. . . Horizontal current
33		. . . . With deposition
34		. . . Inclined current
35		. . . . With deposition
36		. . . Vertical current
37		. . . . With deposition
38		. Magnetic and sifting
39		. Magnetic and fluid suspension
40		. Magnetic and stratifying
41		. Mercurial suspension and mercurial adhesion
42		. Mercurial adhesion or suspension and sifting
43		. Mercurial adhesion or suspension and stratifying
44		. Sifting and stratifying
44.1		. Including sorting of special items or sorting by methods or apparatus includible in subclasses 509 through 707
44.2		. . Fluid jet
44.3		. . Drum-type sifter
44.4		. . Manual sorting
45		ADHESION
46		. With selective differentiation
47		. . Coating
48		. . . Mercurial (i.e., amalgamators)
49		. Coated surface or mass
50		. . Mercurial
51		. . . Applying or removing coat
52		. . . Contact elements
53		. . . . Agitators
54		. . . . Baffles
55		. . . . Disks and spheres
56		. . . . Liners
57		. . . . Percolators
58		. . . Receivers
59		. . . . Rotating
60		. . . . . Centrifugal
61		. . . . . Cylinders, external
62		. . . . . Cylinders, internal
63		. . . . . Endless belt
64		. . . . Shaking
65		. . . . With agitating or conveying
66		. . . . . Fluid
67		. . . . . With rubbing
68		. . . . . Impact
69		. . . . . Reciprocating
70		. . . . . Rotating
127.1		ELECTROSTATIC
127.2		. With heating of particles
127.3		. With vibrating trough charging of particles
127.4		. Free fall type particle charging
128		. Attracting and repelling
129		. Attracting
130		. Repelling
131		. Stratifying
509		SORTING SPECIAL ITEMS, AND CERTAIN METHODS AND APPARATUS (E.G., POCKET TYPE AND LIGHT RESPONSIVE SORTING, ETC.) FOR SORTING ANY ITEMS
510		. Sorting eggs or components thereof
511		. . Radiant energy sensing means controls separating means
512		. . By weight
513		. . . Sensing egg weight and controlling separating means in accordance therewith
514		. . . Orbiting or rotating carrier responsive to egg weight
515		. . . . Carrier tilted by means (e.g., trip, cam, etc.) adjacent travel path when depressed to particular elevation
516		. . . Same eggs successively placed on means (e.g., balance beams, etc.) responsive to different weights
517		. Sorting lumber, logs, pipes, rails, or like items
518		. . Condition responsive means controls separating means
519		. . . Relatively movable calipers closed against item
520		. . . Sensor responsive to item contact
521		. . With endless conveyor belt
522		. Sorting bottles, ampoules, jars, drinking vessels, or like ceramic or glass containers
523		. . Condition responsive means controls separating means
524		. . . Sensing radiant energy reflected, absorbed, emitted, or obstructed by item or adjunct (e.g., label, cap, etc.) thereof
525		. . . . Sizing with visible light beam
526		. . . . Detecting internal flaw (e.g., air bubble, crack, etc.) in wall of item
527		. . . . . By means of radio frequency radiation
528		. . . . Detecting flaw in, or absence or misplacement of, label on item
529		. . . Sensing position, shape, or presence of closure
530		. . . Sensor contacts item
531		. . . . Gauge
532		. . . . . Plug
533		. . . . . Relatively movable calipers closed against item
534		. Sorting paper money
535		. Sorting cigarettes, cigars, or packages thereof
536		. . Sensing radiant energy reflected, absorbed, emitted, or obstructed by item or adjunct thereof
537		. . Fluid or vacuum sensing means controls separating means
538		. Nonconveying driven means for turning item at separating or inspecting station to facilitate sorting
539		. Traveling items shifted to form line, or into end or edge alignment, to facilitate inspection or separation
540		. Traveling item turned to predetermined position
541		. . Plural orienting means
542		. . Reciprocable or pivotable orienting means
543		. . Fluid orienting means
544		. . Means orienting item moved by gravity
545		. . Driven orienting means
546		. Signalling, indicating, or display means
547		. . Indicia associated with cards, file folders, or like coded items, or with sorting means therefor (including cards, per se, with edge coding)
548		. . Operation of apparatus stopped
549		. . Signal lamp or audible alarm
550		. . Indicating scale
551		. . Item counter
552		. Condition responsive means controls separating means
553		. . Cards or sheets separated by rotatable suction drum
554		. . Sorting cards or sheets coded by perforation
555		. . Diverse
556		. . . Diverse electrical tests
557		. . . Including noncondition-responsive separating means
558		. . . At single station
559		. . Means (e.g., information storing device, timer, delaying relay, etc.) delaying actuation of separating means
560		. . . Mechanical
561		. . . . Rotatable pin carrier
562		. . . Magnetic
563		. . . . Electrical
564		. . . . . Electronic
565		. . . . . . Shift register
566		. . . . . . . Controlled by article
567		. . Magnetic test sensing property of item
568		. . . Magnetic core tested
569		. . . Reading indicia
570		. . . Permeability
571		. . Electrical test sensing property of item
572		. . . Detecting flaw in dielectric
573		. . . Electrical component tested
574		. . . . Resistor or capacitor
575		. . . . Lamp or battery
576		. . Sensing radiant energy reflected, absorbed, emitted, or obstructed by item or adjunct thereof
577		. . . Infrared, visible light, or ultraviolet
578		. . . . Ultraviolet
579		. . . . Laser
580		. . . . Color detection
581		. . . . . Intensity
582		. . . . . . Measuring ratio of sensed intensities
583		. . . . Reading indicia
584		. . . . . On mail
585		. . . . Mirror or prism in optical path
586		. . . . Sizing
587		. . . . Reflected from item
588		. . . . Transmitted through item
589		. . . X-ray or gamma ray
590		. . . Sonic or supersonic energy
591		. . Sensing by applying fluid or vacuum to item
592		. . Responsive to weight of item
593		. . . Detecting movement of item support with electrical sensor
594		. . . . Photodetector
595		. . . . Switch
596		. . . Pusher or deflector controls movement of item on separate support
597		. . Sensing position, shape, or presence of closure or end wall on container
598		. . Sensing contour of item having no missing parts
599		. . Sorting items according to susceptibility to deform (e.g., malleability, hardness, compressibility, etc.), rupture, or vibrate
600		. . Sensor contacts item
601		. . . Gauge
602		. . . . Relatively movable calipers closed against item
603		. . . . Sheet gauging
604		. . . . Sensor generates electrical signal
605		. . . . . Items separated into at least three classes
606		. Separating means
607		. . Corn silk separator
608		. . Sorting items according to edge coding
609		. . . Magnet attracts or repels item
610		. . . Keyboard control
611		. . . Cards, file folders, or like items sorted by means of necked-down notch thereon
612		. . . Cards, file folders, or like items alternatively having notch or hole at particular location thereon
613		. . Sorting cards, file folders, or like items having coded sorting holes
614		. . Hand supported implements
615		. . Brush, flail, or rake used other than as one of opposed pair of gauge elements to separate, or to facilitate separation of, items
616		. . . Rotatable
617		. . Item gripped between opposed elements
618		. . . Rollers
619		. . Gauge enters hole in item
620		. . Gauging passage between orbiting belts
621		. . Rotating or orbiting carrier having expandable gauging passage passing items of different size at different points along carrier travel path
622		. . . Belt
623		. . . . With gauging pocket for individual item
624		. . . . . Pocket formed by rollers, disks, or wheels spaced transversely of belt or by contoured transverse roller, bar, or slat
625		. . Gauge with clearer other than continuous feeder
626		. . . Spacing between gauge elements increased to free item
627		. . . Rotatable or pivotable clearer
628		. . . Stationary clearer
629		. . Diverse
630		. . . Including means supporting items for manual sorting or allowing operator to control item destination
631		. . . Including separation effected by items following different trajectories through space
632		. . . Including separation effected by item of particular size passing through gauging passage between separate elements
633		. . . . Stationary elements
634		. . . Including separation effected by item of particular size passing through gauging aperture in wall (e.g., perforated panel, etc.)
635		. . . Including separation effected by different items traveling in different directions while contacting a surface
636		. . Magnet attracts or repels item
637		. . Items thrown or falling through space strike surface and only some rebound
638		. . Items separate by following different trajectories through space
639		. . . Fluid jet changes trajectory of item
640		. . . Items thrown or falling through space strike surface and rebound with different trajectories
641		. . . Takeoff ramp adjustable to different angular positions relative to horizontal plane
642		. . . Thrower
643		. . Suction
644		. . Fluid jet
645		. . Sorting items by weight
646		. . . Orbiting or rotating carrier responsive to item weight
647		. . . . Counterbalance on balance beam moved until beam tilts to item discharging position
648		. . . . Carrier tilted by means (e.g., trip, cam, etc.) adjacent travel path when depressed to particular elevation
649		. . . Same items successively placed on means (e.g., balance beams, etc.) responsive to different weights
650		. . . Item support swings about fixed horizontal axis to discharge at different vertically spaced points
651		. . Pusher moving item on separate surface
652		. . . Pivotable
653		. . . Reciprocable
654		. . . Rotatable
655		. . Gravity-type conveyor (e.g., chute, etc.) movable between different discharge positions
656		. . Movement of items along different paths controlled by passive deflector
657		. . . Deflector movable into and out of path of item
658		. . . Deflector spaced above conveying means to pass item of particular size thereunder
659		. . Sorting items by size
660		. . . Item of particular size passed through gauging passage between separate elements
661		. . . . Gauging passage between stationary element (e.g., bar, slat, etc.) and orbiting belt
662		. . . . Gauging passage between stationary element (e.g., bar, slat, etc.) and roller
663		. . . . Gauging passage between orbiting belt and roller or wheel
664		. . . . Gauging passage between elements of rotating cage
665		. . . . Gauging passage between elements of orbiting belt
666		. . . . Item moves along curved gauging passage
667		. . . . Gauging passage between rotatable elements
668		. . . . . Element adjustable to change width of gauging passage
669		. . . . . Helical roller
670		. . . . . Items move longitudinally of gauging passage varying in width along length thereof
671		. . . . . Spindle or roller having projecting elements spaced circumferentially thereof
672		. . . . . Spindle or roller having axially spaced, flat-sided circumferential elements (e.g., flanges, disks, wheels, etc.) projecting therefrom
673		. . . . . Cylindrical rollers
674		. . . . Gauging passage between moving elements (e.g., vibrating bars, slats, etc.)
675		. . . . Gauging passage between stationary elements (e.g., bars, slats, etc.)
676		. . . . . Element adjustable to change width of gauging passage
677		. . . . . Items move longitudinally of elongate elements
678		. . . . . . With means moving, or regulating movement of, items along elements
679		. . . . . . Width of gauging passage varies
680		. . . Item of particular size passed through gauging aperture in wall (e.g., perforated panel, etc.)
681		. . . . Aperture in orbiting belt
682		. . . . Aperture in chute or trough
683		. . . . Aperture in circumferential wall of hollow body (e.g., tube, etc.) rotatable about longitudinal axis thereof
684		. . . Item of particular size or shape enters pocket
685		. . . . On orbiting belt
686		. . . . On exterior of drumlike body (e.g., roller, etc.) rotatable about longitudinal axis thereof
687		. . . . On interior of hollow drumlike body (e.g., tube, etc.) rotatable about longitudinal axis thereof
688		. . Means pierces, or enters preformed hole in, item
689		. . Items separate by traveling in different directions while contacting drumlike body (e.g., roller, hollow cylinder, etc.) turning about longitudinal axis thereof
690		. . . Items travel circumferentially and longitudinally of turning axis
691		. . Items separate by traveling in different directions while contacting same inclined surface of moving support
692		. . . Items contact inclined reach of orbiting belt
693		. . . . Item separating reach inclined only in direction of belt movement
694		. . . Translating support
695		. . Items separate by traveling in different directions while contacting same horizontal surface of moving support
696		. . Items separate by traveling in different directions while contacting same inclined surface of static support
697		. . . Helical ramp
698		. . Means movable between horizontal item-supporting position and gravity discharge position
699		. . Sorting items according to susceptibility to deform (e.g., malleability, hardness, compressibility, etc.), rupture, or vibrate
700		. . Sorting items according to roughness or adhesiveness
701		. . Item turned while traveling
702		. . Manual sorting
703		. . . Item supported on table or chute
704		. . . . Rotated about vertical axis
705		. . . Item supported on orbiting or rotating carrier
706		. . Specific compartment of receptacle brought into alignment with feed means by operator
707		. . Items separated by tipping, rolling, or sliding off support under force of gravity
132		FLUID SUSPENSION
133		. Gaseous
134		. . Horizontal current
135		. . . With deposition
136		. . Inclined current
137		. . . With deposition
138		. . Vertical current
139.1		. . . With deposition
139.2		. . . . With centrifugal feed distribution
140		. . . Expanding
141		. . . . With deposition
142		. . Grading deposition
143		. . . With deflection
710		. . . . Plural individual interconnected separation means having swirling currents
711		. . . . . Fluidically induced, oppositely directed axial flows only (e.g., multiple cyclone arrangements, etc.)
712		. . . . . . Serial arrangement
713		. . . . Mechanically induced swirling
714		. . . . . Eduction rotor
715		. . . . Fluidically induced, oppositely directed axial flows (e.g., reverse free-vortexes formed, cyclone, etc.)
716		. . . . . Including auxiliary fluid
717		. . . . . Including inlet characteristic (e.g., helix, spiral, volute, etc.)
718		. . . . . . Guide vane
719		. . . . . . Tangential
720		. . . . . Including specific underflow outlet feature (e.g., apex discharge, etc.)
721		. . . . . Including specific overflow outlet feature (e.g., adjustable vortex finder, shape, size, etc.)
722		. . . . Fluidically induced unidirectional swirling (e.g., axial, radial, tangential separation, free-vortex, etc.)
723		. . . . . Plural extractions at diverse locations along flow path
145		. . Impetus and countercurrent
146		. . Feeding
147		. . . Conveyor
148		. . . . Centrifugal
149		. . . . Chute
150		. . . . Disk or cone
151		. . . . Stepped plane
152		. . . Cylinder internal
153		. . . Tossers
154		. . Current control
155		. Liquid
156		. . Horizontal current
157		. . Inclined current
158		. . Vertical current
159		. . . With agitation
160		. . . Expanding
161		. . . . With agitation
162		. . Floating
163		. . . Buoyant material
		. . . . Bubbles
164		. . . . . Processes
165		. . . . . . Preferential
166		. . . . . . With modifying agents
167		. . . . . . . Preferential
168		. . . . . Apparatus
169		. . . . . . Agitating
170		. . . . . . Pneumatic
171		. . . . Oil
172		. . . Gravity liquid
172.5		. . . . Suspension
173		. . . . Water or aqueous solution
174		. . . . Metallic (i.e., amalgamators)
175		. . . . . Processes
176		. . . . . . With chemical treatment
177		. . . . . . . Bath
178		. . . . . . . Ore
179		. . . . . . With electric treatment
180		. . . . . . . Bath
181		. . . . . . . Ore
182		. . . . . . With heat treatment
		. . . . . Feeding and distributing
183		. . . . . . Submerging
184		. . . . . . . Conveyor
185		. . . . . . . Vacuum
186		. . . . . . . With agitation
187		. . . . . . . . Baffles
188		. . . . . . . . Agitators
189		. . . . . . Surface
190		. . . . . . . Impact
191		. . . . . With rubbing
192		. . . . . Feeding and discharging
193		. . . . . . Bath
194		. . . . . Receptacles
195		. . . . . . Reciprocating
196		. . . . . . . Chutes and tables
197		. . . . . . . With agitators
198		. . . . . . Rotating
199		. . . . . . . Centrifugal
200		. . . . . . . With agitators
201		. . . . . . Stationary
202		. . . . . . . Chutes and tables
203		. . . . . . . With agitators
204		. . . . . . . . Reciprocating
205		. . . . . . . . Rotating
206		. . . . . Riffles and traps
207		. . . Surface film tension
208		. . Grading deposition
209		. . . Chronometric
210		. . . With deflection
724		. . . Including circularly flowing liquid separation agent
725		. . . Rotational hydrodynamic extraction (e.g., unidirectional hydrocyclone, vortical, whirlpool, etc.)
726		. . . . Including condition responsive control
727		. . . . Including oppositely directed axial flows around evacuated core (e.g., hydrocyclone having reverse free-vortexes formed, etc.)
728		. . . . . Plural individual interconnected, oppositely directed axial flow producing separation phases (e.g., system arrangements, multiple hydrocyclones, etc.)
729		. . . . . . Serially connected
730		. . . . . Including auxiliary fluid (e.g., air or gas core, dilution water, elutriation liquid, etc.)
731		. . . . . . Adjacent or subsequent to underflow discharge (e.g., dilution water, elutriation liquid, sedimentation chamber, sump, etc.)
732		. . . . . Including specific overflow discharge feature (e.g., adjustable vortex finder, shape, size, etc.)
733		. . . . . Including specific underflow discharge feature (e.g., apex construction, secondary vortex chamber, etc.)
734		. . . . . Including specific inlet feature (e.g., shape, size, etc.)
		MAGNETIC
212		. Diamagnetic
213		. Paramagnetic
214		. . Processes
215		. . Special application
216		. . Multiple type
217		. . Reciprocating magnets
		. . Rotating magnets
218		. . . Belt
219		. . . Cylinder external
220		. . . . Vertical axis
221		. . . Cylinder internal
222		. . . Disk
223.1		. . Stationary magnets
223.2		. . . Cylinder external
224		. . . Cylinder internal
225		. . With agitating or conveying
226		. . . Magnetic
227		. . . . Traveling field
228		. . Discharging
229		. . . Doffers
230		. . . . Magnetic
231		. . Feeding
232		. . . Fluid suspension
233		SIFTING
234		. Combined type
235		. Special applications
236		. . Distributing
237		. . Material testing
238		. With heating or cooling
239		. With weighting
240		. Feeding and discharging
241		. . Conveyors
242		. . Interconnected
243		. Feeding
244		. . Hoppers
245		. . . With agitators or conveyors
246		. . . Cut-offs and valves
247		. . Conveyors
248		. . . Receptacles
249		. . . . Ash pan
250		. . . Fluid
251		. . Reversible
252		. . Sifter movement
253		. . Selective
254		. Distributers or spreaders
255		. Discharging
256		. . Conveyors and valves
257		. . Conveyors
258		. . Valves
259		. . Receptacles
260		. . Tilting
261		. Conveying
262		. . Material forcing
263		. . Material positioning
264		. . . Guides
265		. . . . Imperforate sections
266		. . . . Superposed
267		. . Retarders
268		. With liquid treatment
269		. . Reciprocating sifters
		. . Rotating sifters
270		. . . Drum
271		. . . Disk
272		. . . Endless belt
273		. . Stationary sifters
274		. Concave and convex sifters
275		. . Reciprocating
276		. . . With agitators
277		. . . . Reciprocating
278		. . . . Rotating
279		. . Rotating
280		. . . With agitators
281		. . Stationary
282		. . . With reciprocating agitators
283		. . . With rotating agitators
		. Drum sifters
		. . Horizontal and inclined
284		. . . Feeding or dischargingd
285		. . . . Peripheral feed
286		. . . . . Inlets
287		. . . Reciprocating and rotating
288		. . . Rotating
289		. . . . Multiple
290		. . . . . Concentric
291		. . . . . . Nested
292		. . . . . Superposed
293		. . . . With agitators and conveyors
294		. . . . . Lifters and deflectors
295		. . . . . Pneumatic
296		. . . . . Rotating
297		. . . . . . Attached
298		. . . . . . Lifters
299		. . . . Lifters and beaters
300		. . . Stationary
		. . Vertical
301		. . . Reciprocating and rotating
302		. . . Reciprocating
303		. . . Rotating
304		. . . . With agitators
305		. . . Stationary
306		. . . . With agitators
307		. Endless belt sifters
308		. . With agitators
		. Plane sifters
		. . Horizontal and inclined
309		. . . Reciprocating and rotating
		. . . Reciprocating
310		. . . . Distorting
311		. . . . Multiple
312		. . . . . With pneumatic treatment
313		. . . . . Alined
314		. . . . . Stepped
315		. . . . . Superposed
316		. . . . . . With intermediate conveyors
317		. . . . . . With dischargers
318		. . . . . . With pneumatic treatment
319		. . . . . . Attaching and adjusting
320		. . . . With agitators and conveyors
321		. . . . . Pneumatic
322		. . . . . Reciprocating
323		. . . . . . Unattached
324		. . . . . Rotating
325		. . . . With horizontal and vertical shake
326		. . . . . Gyratory
327		. . . . . Lateral
328		. . . . . . With impact
329		. . . . . Longitudinal
330		. . . . . . With impact
		. . . . With horizontal shake
331		. . . . . Longitudinal and transverse
332		. . . . . . Gyratory
333		. . . . . Lateral
334		. . . . . . Impactive
335		. . . . . . Pivoted
336		. . . . . . . With impact
337		. . . . . . Sliding
338		. . . . . . . With impact
339		. . . . . . Swinging
340		. . . . . . . With impact
341		. . . . . Longitudinal
342		. . . . . . Sliding
343		. . . . . . . With impact
344		. . . . . . Swinging
345		. . . . . . . With impact
346		. . . . With vertical shake
347		. . . . . Impactive
348		. . . . . Pivoted
349		. . . . . . With impact
350		. . . Rotating
351		. . . . With agitators
352		. . . Stationary
353		. . . . Multiple
354		. . . . . Stepped
355		. . . . . Superposed
356		. . . . . . Zigzag
		. . . . With agitators
357		. . . . . Reciprocating
358		. . . . . Rotating
359		. . Vertical
360		. . . Reciprocating
361		. . . Rotating
362		. Spiral sifters
363		. Elements
364		. . Actuating
365.1		. . . Reciprocating
365.2		. . . . Cam and linkage
365.3		. . . . With cushioning
365.4		. . . . Differential motion
366		. . . . Gyrating
366.5		. . . . . Unbalanced weight
367		. . . . Unbalanced weight
368		. . . . Magnetic
369		. . . Rotating
370		. . Bins and casings
371		. . . Adapters
372		. . . Closures
373		. . . Compartments and receptacles
374		. . . Household
375		. . . . Chutes
376		. . . . Hods
377		. . . . Stoves and furnaces
378		. . . Venting
379		. . Clearers
380		. . . Fluid
381		. . . Jarring
382		. . . . Knockers
383		. . . . Whips
384		. . . Pressers
385		. . . Wipers
386		. . . . Brush
387		. . . . Reciprocating
388		. . . . . Brush
389		. . . . Rotating
390		. . . . . Brush
391		. . Mesh closures
392		. . Dress
393		. . . Bars
394		. . . . Adjusting
395		. . . . Attaching
396		. . . . Reciprocating
397		. . . Perforated sheet
398		. . . . Adjusting
399		. . . . Attaching
400		. . . Cords and wires
401		. . . Woven
402		. . . . Adjusting
403		. . . . Attaching
		. . Frames
404		. . . Adjusting
405		. . . Attaching
406		. . . Drum
407		. . . . Sectional
408		. . . Plane
409		. . Supports
410		. . . Axial
411		. . . Rim
412		. . . Framework
413		. . . . Adjustable
414		. . . . Knockdown
415		. . . Hangers and standards
416		. . . Levelers
417		. . . Manual
418		. . . . Scoop
419		. . . . Shovel
420		. . . Portable
421		. . . . Vehicles
422		STRATIFIERS
		. With liquid treatment
		. . Movable bed
		. . . Permeable
423		. . . . Constant current
424		. . . . . Divergent or opposite travel
425		. . . . Pulsating current
426		. . . . . Divergent or opposite travel
427		. . . . . Parallel travel
428		. . . Belt
429		. . . . Divergent travel
430		. . . . Opposite travel
431		. . . . Reciprocating support
432		. . . . . Divergent travel
433		. . . . . Opposite travel
		. . . Chutes and tables
434		. . . . Spiral
435		. . . . Reciprocating-rotating
436		. . . . . Divergent or opposite travel
437		. . . . Reciprocating
438		. . . . . Annular
439		. . . . . . Divergent or opposite travel
440		. . . . . With agitators
441		. . . . . Divergent travel
442		. . . . . Opposite travel
443		. . . . . Parallel travel
444		. . . . Rotating
		. . Receptacles
445		. . . Reciprocating-rotating
446		. . . Reciprocating
447		. . . . Manual support
448		. . . . With agitators
449		. . . . . Reciprocating
450		. . . . . Rotating
		. . . Rotating
451		. . . . Horizontal or inclined axis
452		. . . . . With agitators or conveyors
453		. . . . Vertical axis
		. . Stationary bed
		. . . Permeable
454		. . . . Constant current
455		. . . . Pulsating current
456		. . . . . Divergent or opposite travel
457		. . . . . Parallel travel
458		. . . Chutes and tables
459		. . . . Annular, circular or spiral
460		. . . . With divergent or opposite travel
		. . . Receptacles
461		. . . . With agitators or conveyors
462		. . . . . Reciprocating
463		. . . . . Rotating
464		. . . . . . Horizontal or inclined axis
465		. . . . . . Vertical axis
		. With pneumatic treatment
		. . Movable bed
		. . . Permeable
466		. . . . Constant current
467		. . . . . Divergent or opposite travel
468		. . . . Pulsating current
469		. . . . . Divergent or opposite travel
470		. . . Belts
471		. . . Chutes, tables, and receptacles
472		. . . . Divergent or opposite travel
473		. . . Drums
		. . Stationary bed
		. . . Permeable
474		. . . . With constant current
475		. . . . With pulsating current
476		. . . . . Divergent or opposite travel
477		. . Chutes, tables, and receptacles
478		. Magnetic
		. Movable bed
479		. . Chutes, tables, and receptacles
480		. . . Divergent travel
481		. . . Opposite travel
482		. . Drums
483		. Stationary bed
484		. Elements
485		. . Beds
486		. . . Permeable
487		. . Cleaners
488		. . Feeding and discharging
489		. . . Automatic control
490		. . Discharging
491		. . . Automatic control
492		. . . Conveyers
493		. . . Dividers and skimmers
494		. . . Exits
495		. . . . With positively operated dischargers
496		. . . . Automatic control
497		. . Feeding
498		. . . Distributing
499		. . . Regulating
		. . Fluid supply
500		. . . Liquid
501		. . . . Circuit
502		. . . Pneumatic
503		. . Operating mechanism
504		. . . Reciprocating
505		. . . Rotating
506		. . Riffles
507		. . . Overhung
508		. . Supports
		******************************
		CROSS-REFERENCE ART COLLECTIONS
		******************************
900		SORTING FLAT-TYPE MAIL
901		FROTH FLOTATION; COPPER
902		FROTH FLOTATION; PHOSPHATE
903		FEEDER CONVEYOR HAVING OPPOSED GRIPPERS
904		FEEDER CONVEYOR HOLDING ITEM BY MAGNETIC ATTRACTION
905		FEEDER CONVEYOR HOLDING ITEM BY SUCTION
906		PNEUMATIC OR LIQUID STREAM FEEDING ITEM
907		MAGNETIC FEEDER
908		ITEM FED BY FREE FALL
909		ITEM HOLDING FEED MAGAZINE INSERTABLE IN SORTING APPARATUS
910		FEED HOPPER
911		FEED MEANS SUPPORTING OR GUIDING ITEM MOVING UNDER INFLUENCE OF GRAVITY
912		ENDLESS FEED CONVEYOR WITH MEANS FOR HOLDING EACH ITEM INDIVIDUALLY
913		SCREW FEED CONVEYOR
914		DIVERSE SEQUENTIAL FEEDING STEPS
915		CENTRIFUGAL FEEDER
916		RECIPROCATING PUSHER FEEDING ITEM
917		ENDLESS BELT PUSHER FEEDING ITEM
918		SWINGING OR ROTATING PUSHER FEEDING ITEM
919		ROTARY FEED CONVEYOR
920		VIBRATORY FEED CONVEYOR
921		RECIPROCATING OR OSCILLATING FEED CONVEYOR
922		MISCELLANEOUS FEED CONVEYORS
923		FEED THROUGH INCLUDING AT LEAST ONE ENDLESS CONVEYOR
924		GRAVITY CONVEYOR MOVING ITEM FROM SEPARATING STATION
925		DRIVEN OR FLUID CONVEYOR MOVING ITEM FROM SEPARATING STATION
926		SILVERWARE SORTER
927		COP SORTER
928		CONTAINER CLOSURE SORTER
929		FASTENER SORTER
930		MUNICIPAL SOLID WASTE SORTING
931		MATERIALS OF CONSTRUCTION
932		FLUID APPLIED TO ITEMS
933		ACCUMULATION RECEIVING SEPARATED ITEMS
934		MOVING ITEMS TO SORTING MEANS IN SPACED RELATION LENGTHWISE OF FEED PATH
935		AMBULANT
936		PLURAL ITEMS TESTED AS GROUP
937		LAUNDRY SORTING
938		ILLUMINATING MEANS FACILITATING VISUAL INSPECTION
939		VIDEO SCANNING
940		NONCONDITION-RESPONSIVE SORTING BY CONTOUR
941		ITEM CARRYING BRIDGE RAISABLE TO EXPOSE DISCHARGE OPENING
942		OPERATOR SELECTS DESTINATION OF ITEM

Information Products Division -- Contacts

Questions regarding this report should be directed to:

U.S. Patent and Trademark Office
Information Products Division
PK3- Suite 441
Washington, DC 20231

tel: (703) 306-2600
FAX: (703) 306-2737
email: oeip@uspto.gov

---

Last Modified: 6 October 2000