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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.
Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like [N: (ash-sifters for domestic stoves or ranges F24B 15/007)]
[N: Transportable screening plants]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

WO-A1-96/25245

Hand screens
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

LU-A2-91105

Stationary flat screens
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A1-2003/0080031

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

Illustrative example of subject matter classified in this group:

GB-A-2307428

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

Illustrative example of subject matter classified in this group:

EP-A1-0411803

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

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

Illustrative example of subject matter classified in this group:

US-B1-7861867

Roller screens
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-B1-7117996

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

Illustrative example of subject matter classified in this group:

EP-A1-2248602

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

GB326834 A

US5392931 A

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

Illustrative example of subject matter classified in this group:

FR-A-2686273

Revolving drums
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

GB-A-536054

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

Illustrative example of subject matter classified in this group:

FR-A-2568492

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

[N: 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

[N: with unbalanced weights]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-B-1176979

[N: with excentric shafts]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-C-948574

jigging or moving to-and-fro [N: within their own plane] in or approximately in [N: 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

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

[N: 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

[N: with electromagnets]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-A1-2120244

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

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

Resonant vibration screens
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-C1-10054089

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

Balancing devices
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-C-641512

[N: 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

[N: Manufacturing of screening surfaces]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-4396503

[N: Repairing of screening surfaces]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

WO-A-92/00133

[N: Regulation of screen apertures]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-A-1140961

[N: 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

[N: Corrugated Screening surfaces]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-B1-6340089

[N: Multi-layer screening surfaces]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A1-2004/0102117

[N: Woven mesches]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-U1-29501985

[N: Meshes of intersecting, non-woven, elements]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-A1-2880289

[N: Perforated sheet-like material]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-U1-20018385

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

Illustrative example of subject matter classified in this group:

US-A-5221008

[N: 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

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

[N: with brushes]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-A-1059722

[N: the brushes being rotating]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-U1-20214115

[N: with scrapers]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-4289614

[N: the scrapers being rotating]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-3863765

with beating devices
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-A1-2223079

with fluid jets
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

GB-A-1193260

Heated screens
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-A1-2567776

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

Illustrative example of subject matter classified in this group:

DE-C-870935

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

Illustrative example of subject matter classified in this group:

FR-E-61502

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

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

Illustrative example of subject matter classified in this group:

WO-A1-2010/056220

[N: 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

in cascades
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-4568453

using revolving drums
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-4207177

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

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

using gravity
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-B1-6883667

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

Illustrative example of subject matter classified in this group:

US-A-4418871

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

Illustrative example of subject matter classified in this group:

WO-A1-94/16995

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

Illustrative example of subject matter classified in this group:

WO-A1-95/32811

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

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

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

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

Illustrative example of subject matter classified in this group:

EP-A2-0073567

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

Illustrative example of subject matter classified in this group:

US-A-3421619

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

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

Arrangement of accessories in apparatus for separating solids from solids using gas currents
Control arrangements
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-B1-6883668

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

Illustrative example of subject matter classified in this group:

FR-A-2553009

Cleaning arrangements
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-4913807

Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices (grading eggs A01K 43/04 )
[N: 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

[N: Sorting molded pieces and runners]
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

FR-A1-2324379

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

according to size
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

DE-A-4410871

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

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

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

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

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

using momentum effects
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

WO-A1-2006/089326

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

[N: shaking tables (for wet separatingB03B 5/04; tables with water impulse B03B 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

[N: 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

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

Illustrative example of subject matter classified in this group:

WO-A-03/068406

Control
Definition statement
This subclass/group covers:

Illustrative example of subject matter classified in this group:

US-A-5024334

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