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SEPERATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, OR SIFTING OR BY USING GAS CURRENTS; OTHER SEPARATING BY DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL (combinations of dry separating apparatus with wet separating apparatus B03B; hand sorting, postal sorting, sorting by switching or other devices actuated in responce to detection or measurement of some feature of articles or samples of material B07C)
Definition statement
This subclass/group covers:

Apparatus or methods for the separation of solids from solids that include:

  • Any sorting or grading of bulk material or loose articles fit to be handled like bulk material which results automatically from the construction of the apparatus and properties of the material or articles, e.g. by a trap opening under an object of a certain minimum weight, by an aperture of graduated size.
  • Sorting of articles in so far as the same conditions apply, e.g. sorting of timber by passing it over successively longer openings; the articles may or may not be orientated for the purpose of sorting.
  • Sieving, screening, sifting or sorting solid materials using networks, gratings, grids or the like.
  • Separating solids from solids that are initially a mixture using apparatus or methods that subject the mixture to a gas current, dispenses the mixture within a gas, carries the mixture on a gas current while it is being separated, or uses a gas current on it to cause separation, including combinations of disparate types of apparatus utilizing gas currents in the separation of solids from solids.
  • Other types of apparatus for directly controlled dry method grading or sorting of solid materials in a bulk form or of loose articles that are being handled like solid type bulk material, e.g. grading according to size or weight or using momentum effects.
  • Constructional features of screens per se, or screens and their driving mechanisms, which are used in dry or wet separating methods.
  • Combinations of disparate types of apparatus or methods for separating solids from solids that applicable to bulk material or to loose articles fit to be handled like bulk material.
  • Accessories that are specially adapted for, or arranged in conjunction with, the above types of separating, sorting or grading of bulk material or articles.
{Transportable screening plants}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

WO-A1-96/25245

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Hand screens
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

LU-A2-91105

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Stationary flat screens
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A1-2003/0080031

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Cone or disc shaped screens
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

GB-A-2307428

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Screens rotating within their own plate
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

EP-A1-0411803

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Screens in the form of endless moving bands
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-5887729

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Apparatus having only parallel elements
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-B1-7861867

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Roller screens
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-B1-7117996

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using corrugated, grooved or ribbed rollers
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

EP-A1-2248602

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the elements being movable and in other than roller form
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US3971716 A

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GB326834 A

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US5392931 A

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Stationary drums with moving interior agitators
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-A-2686273

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Revolving drums
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

GB-A-536054

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with fixed or moving interior agitators
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-A-2568492

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with additional axial or radial movement of the drum
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

WO-A1-84/04473

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{their jigging movement being a closed or open curvilinear path in a plane perpendicular to the plane of the screen and parrallel or transverse to the direction of conveyance}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-2258789

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{with unbalanced weights}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-B-1176979

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{with excentric shafts}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-C-948574

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jigging or moving to-and-fro {within their own plane} in or approximately in {or transverse to} the direction of conveyance
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-A1-4039934

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jigging or moving to-and-fro perpendicularly or approximately perpendiculary to the plane of the screen
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

EP-A2-0212378

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{with mechanical drive elements other than electromagnets}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-E-RE16701

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{with electromagnets}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-A1-2120244

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jigging or moving to-and-fro in more than one direction
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

WO-A1-03/024626

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oscillating in a circular arc in their own plane; plansifters
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-C-74002

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Resonant vibration screens
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-C1-10054089

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Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

GB-A-2123520

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Balancing devices
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-C-641512

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{constructional details of screening surfaces or meshes}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-B-1022448

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{ Manufacturing of screening surfaces}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-4396503

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{ Repairing of screening surfaces}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

WO-A-92/00133

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{ Regulation of screen apertures}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-A-1140961

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{ Screening surfaces built up of modular elements}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

WO-A1-03/066243

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{ Corrugated Screening surfaces}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-B1-6340089

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{ Multi-layer screening surfaces}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A1-2004/0102117

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{ Woven mesches}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-U1-29501985

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{ Meshes of intersecting, non-woven, elements}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-A1-2880289

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{ Perforated sheet-like material}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-U1-20018385

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Stretching devices for screens
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-5221008

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{Devices for alternately stretching and sagging screening surfaces}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-A1-3411719

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stretching more than one screen of screen section by the same or different stretching means
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-C-608376

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{ with brushes}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-A-1059722

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{ the brushes being rotating}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-U1-20214115

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{ with scrapers}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-4289614

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{ the scrapers being rotating}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-3863765

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with beating devices
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-A1-2223079

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with fluid jets
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

GB-A-1193260

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Heated screens
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-A1-2567776

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heated by heated fluid
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-C-870935

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heated by direct electric heating
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-E-61502

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Separating solids from solids by subjecting their mixture to gas currents (using tables or jigs B03B 4/00)
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

EP-A2-1072800

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while the mixtures fall
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

WO-A1-2010/056220

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{the material being slingered or fled out horizontally before falling, e.g. by dispersing elements}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

GB-A-1526050

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in cascades
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-4568453

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using revolving drums
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-4207177

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while the mixtures are supported by sieves, screens, or like mechanical elements
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-U1-202010004167

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Selective separation of solid materials carried by, or dispersed in, gas currents (sieves of filters for separating dispersed particles from gases or vapours B01D)
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

EP-A1-1591172

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using gravity
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-B1-6883667

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by reversal of direction of flow
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-4418871

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by impingement against baffle separators
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

WO-A1-94/16995

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by impingement against sieves
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

WO-A1-95/32811

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using centrifugal force (centrifuges B04B; cyclones B04C)
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-4159942

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generated by rotating vanes, discs, drums, or brushes
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-A1-19945646

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generated by the winding course of the gas stream
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

WO-A1-2006/126577

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having air recirculating within the apparatus
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

EP-A2-0073567

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with pulsating air currents
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-3421619

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Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A1-2002/0175113

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Combinations of similar or different apparatus for separating solids from solids using gas currents
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

EP-A1-2206557

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Control arrangements
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-B1-6883668

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Feeding or discharging arrangements
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-A-2553009

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Cleaning arrangements
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-4913807

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{Separation of articles by differences in their geometrical form or by difference in their physical properties, e.g. elasticity, compressibility, hardness}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

WO-A1-03/013789

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{Sorting molded pieces and runners}
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-A1-2324379

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Apparatus for grading using pockets for taking out particles from aggregates
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-A-748864

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according to size
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-A-4410871

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using material mover cooperating with retainer, deflector or discharger (B07B 13/065 to B07B 13/075 take precedence)
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-A-1028638

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Apparatus for grading or sorting using divergent conveyer belts or cables
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

GB-A-594867

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Apparatus in which aggregates or articles are moved along or past openings which increase in size in the direction of movement
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-A-2545385

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Apparatus comprising moving article - receiving openings, the size of which varies as they move
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

AU-B-592500

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according to weight (B07B 13/10 takes precedence)
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-5301816

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using momentum effects
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

WO-A1-2006/089326

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involving travel of particles over surfaces which separate by centrifugal force or by relative friction between particles and such surfaces, e.g. helical sorters
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-B1-6382427

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{ shaking tables (for wet separatingB03B 5/04; tables with water impulseB03B 5/70; pneumatic tablesB03B 4/02; moving screensB07B 1/28) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A1-2002117428

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{stratification of dry granular material on a continuously travelling surface, e.g. belt conveyer (vanner for wet separation B03B 5/08) }
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-3419143

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Feed or discharge arrangements
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

WO-A-03/068406

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Control
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-5024334

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Combinations of apparatus for separating solids from solids by dry methods applicable to bulk material, e.g. loose articles fit to be handled like bulk material (using wet methods B03B 7/00; using gas currents B07B 9/00)
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

BE-A-898799

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Last Modified: 10/11/2013