B
SECTION B — PERFORMING OPERATIONS; TRANSPORTING
  
SEPARATING; MIXING
 B01 - 
B07

Note(s)

The following notes are meant to assist in the use of this part of the classification scheme; they must not be read as modifying in any way the elaborations.

  1. In this sub-section, the separation of different materials, e.g. of different matter, size, or state, is predominantly found in the following subclasses:

    B01D

    B03B, B03C, B03D

    B04B, B04C

    B07B, B07C.

  2. The classifying characteristics of these subclasses are:
    1. the physical state of the matter to be separated;
    2. the principle of the process used;
    3. particular kinds of apparatus.
    The first of these characteristics involves six different aspects, assembled in three groups:
    1. liquid/liquid or liquid/gas and gas/gas;
    2. solid/liquid or solid/gas;
    3. solid/solid.
  3. These subclasses are to be used according to the following general rules:

 B01 - 
B07
Subsection index
LIQUID/LIQUID, LIQUID/GAS OR GAS/GAS SEPARATION
Method
General operationsB01D
by centrifugal force, using centrifuges or free-vortex apparatusB01D
using magnetic or electrostatic effectB03C
Apparatus
General operationsB01D
by centrifugal force, using centrifuges or free-vortex apparatusB04B, B04C
using magnetic or electrostatic effectB03C
SOLID/LIQUID OR SOLID/GAS SEPARATION
Method
General operationsB01D
by centrifugal forceB01D
using centrifuges or free-vortex apparatusB01D
using magnetic or electrostatic effectB03C
Apparatus
General operationsB01D
by centrifugal forceB01D
using centrifuges or free-vortex apparatusB04B, B04C
using magnetic or electrostatic effectB03C
SOLID/SOLID SEPARATION
Method
Dry methods
material in bulkB07B
Individual sortingB07C
Screening, sifting, pneumatic sortingB07B
using pneumatic tables or jigsB03B
by magnetic or electrostatic effectB03C
by centrifugal forceB07B
using centrifuges or free-vortex apparatusB07B
Wet methods
General operationsB03B
flotation, differential sedimentationB03D
screeningB07B
Combinations Dry methods - wet methodsB03B
Apparatus
Dry methods
material in bulkB07B
Individual sortingB07C
Screening, sifting, pneumatic sortingB07B
using pneumatic tables or jigsB03B
by magnetic or electrostatic effectB03C
by centrifugal forceB07B
using centrifuges or free-vortex apparatusB04B, B04C
Wet methods
General operationsB03B
flotation, differential sedimentationB03D
screeningB07B
Combinations Dry methods - wet methodsB03B
 B07
SEPARATING SOLIDS FROM SOLIDS; SORTING (separation in general B01D; wet separating processes, sorting by processes using fluent material in the same way as liquid B03; using liquids B03B, B03D; sorting by magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high voltage electric fields B03C; centrifuges or vortex apparatus for carrying out physical processes B04; sorting peculiar to particular materials or articles and provided for in other classes, see the relevant classes)
 B07B
SEPARATING 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 response to detection or measurement of some feature of articles or samples of material B07C)
 B07B

Note(s)

This subclass covers:

  • 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, 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.

 B07B
Subclass index
SEPARATING SOLIDS FROM SOLIDS USING NETWORKS, GRATINGS, OR GRIDS 1/00
SEPARATING SOLIDS FROM SOLIDS USING GAS CURRENTS 4/00, 7/00, 9/00, 11/00
OTHER SEPARATING; COMBINATIONS 13/00; 15/00
P:20 B07B 1/00
Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
 B07B 1/02
·  Hand screens
 B07B 1/04
·  Stationary flat screens
 B07B 1/06
·  Cone or disc shaped screens
 B07B 1/08
·  Screens rotating within their own plane
 B07B 1/10
·  Screens in the form of endless moving bands
 B07B 1/12
·  Apparatus having only parallel elements
 B07B 1/14
·  ·  Roller screens
 B07B 1/15
·  ·  ·  using corrugated, grooved or ribbed rollers  [2]
 B07B 1/16
·  ·  the elements being movable and in other than roller form
 B07B 1/18
·  Drum screens
 B07B 1/20
·  ·  Stationary drums with moving interior agitators
 B07B 1/22
·  ·  Revolving drums
 B07B 1/24
·  ·  ·  with fixed or moving interior agitators
 B07B 1/26
·  ·  ·  with additional axial or radial movement of the drum
 B07B 1/28
·  Moving screens not otherwise provided for, e.g. swinging, reciprocating, rocking, tilting, or wobbling screens
 B07B 1/30 - 
B07B 1/38

Note(s)

Group B07B 1/40 takes precedence over groups B07B 1/30-B07B 1/38.

 B07B 1/30
·  ·  jigging or moving to-and-fro in or approximately in the direction of conveyance
 B07B 1/32
·  ·  jigging or moving to-and-fro within their own plane transverse to the direction of conveyance
 B07B 1/34
·  ·  jigging or moving to-and-fro perpendicularly or approximately perpendicularly to the plane of the screen
 B07B 1/36
·  ·  jigging or moving to-and-fro in more than one direction
 B07B 1/38
·  ·  oscillating in a circular arc in their own plane; Plansifters
 B07B 1/40
·  ·  Resonant vibration screens
 B07B 1/42
·  Drive mechanisms, regulating or controlling devices, or balancing devices, specially adapted for screens
 B07B 1/44
·  ·  Balancing devices
 B07B 1/46
·  Constructional details of screens in general; Cleaning or heating of screens
 B07B 1/48
·  ·  Stretching devices for screens
 B07B 1/49
·  ·  ·  stretching more than one screen or screen section by the same or different stretching means  [2]
 B07B 1/50
·  ·  Cleaning
 B07B 1/52
·  ·  ·  with brushes or scrapers
 B07B 1/54
·  ·  ·  with beating devices
 B07B 1/55
·  ·  ·  with fluid jets  [3]
 B07B 1/56
·  ·  Heated screens
 B07B 1/58
·  ·  ·  heated by heated fluid
 B07B 1/60
·  ·  ·  heated by flame heating
 B07B 1/62
·  ·  ·  heated by direct electric heating
 B07B 4/00 - 
B07B 11/00
Separating solids from solids using gas currents
P:30 B07B 4/00
Separating solids from solids by subjecting their mixture to gas currents (using tables or jigs B03B)
 B07B 4/02
·  while the mixtures fall
 B07B 4/04
·  ·  in cascades
 B07B 4/06
·  ·  using revolving drums
 B07B 4/08
·  while the mixtures are supported by sieves, screens, or like mechanical elements
P:40 B07B 7/00
Selective separation of solid materials carried by, or dispersed in, gas currents (sieves or filters for separating dispersed particles from gases or vapours B01D)
 B07B 7/01
·  using gravity
 B07B 7/02
·  by reversal of direction of flow
 B07B 7/04
·  by impingement against baffle separators
 B07B 7/06
·  by impingement against sieves
 B07B 7/08
·  using centrifugal force (centrifuges B04B; cyclones B04C)
 B07B 7/083
·  ·  generated by rotating vanes, discs, drums, or brushes
 B07B 7/086
·  ·  generated by the winding course of the gas stream
 B07B 7/10
·  ·  having air recirculating within the apparatus
 B07B 7/12
·  with pulsating air currents
P:0 B07B 9/00
Combinations of apparatus for screening or sifting or for separating solids from solids using gas currents; General arrangement of plant, e.g. flow sheets
 B07B 9/02
·  Combinations of similar or different apparatus for separating solids from solids using gas currents
P:50 B07B 11/00
Arrangement of accessories in apparatus for separating solids from solids using gas currents
 B07B 11/02
·  Arrangement of air or material conditioning accessories
 B07B 11/04
·  Control arrangements
 B07B 11/06
·  Feeding or discharging arrangements
 B07B 11/08
·  Cleaning arrangements
 B07B 13/00 - 
B07B 15/00
Other separating, e.g. grading, resulting automatically from the construction of the apparatus used and properties of the material concerned; Combinations
P:60 B07B 13/00
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)
 B07B 13/02
·  Apparatus for grading using pockets for taking out particles from aggregates
 B07B 13/04
·  according to size
 B07B 13/05
·  ·  using material mover cooperating with retainer, deflector or discharger (B07B 13/065-B07B 13/075 take precedence)  [3]
 B07B 13/065
·  ·  Apparatus for grading or sorting using divergent conveyer belts or cables  [3]
 B07B 13/07
·  ·  Apparatus in which aggregates or articles are moved along or past openings which increase in size in the direction of movement  [3]
 B07B 13/075
·  ·  Apparatus comprising moving article-receiving openings, the size of which varies as they move  [3]
 B07B 13/08
·  according to weight (B07B 13/10 takes precedence)
 B07B 13/10
·  using momentum effects
 B07B 13/11
·  ·  involving travel of particles over surfaces which separate by centrifugal force or by relative friction between particles and such surfaces, e.g. helical sorters  [2]
 B07B 13/14
·  Details or accessories
 B07B 13/16
·  ·  Feed or discharge arrangements
 B07B 13/18
·  ·  Control
P:10 B07B 15/00
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 gas currents B07B 9/00; using wet methods B03B 7/00)