B
SECTION B — PERFORMING OPERATIONS; TRANSPORTING
  
SEPARATING; MIXING
 B01 - 
B09

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:
    It should also be noted that the separation of isotopes of the same chemical element is covered by B01D 59/00, whatever process or apparatus is employed.
  4. The following scheme illustrates the classification according to these rules.

        TABLE A

        LIQUID/LIQUID

        LIQUID/GAS

        GAS/GAS

                                            Subclasses dealing with

     Operations                                 Method    Apparatus

     General                                    B01D      B01D

       by centrifugal force, using centrifuges or

       free-vortex apparatus                    B01D      B04B,

                                                            B04C

       using magnetic or electrostatic effect   B03C      B03C 

        TABLE B

        SOLID/LIQUID

        SOLID/GAS

                                            Subclasses dealing with

     Operations                                 Method    Apparatus

     General                                    B01D      B01D 

       by centrifugal force                     B01D      B01D 

       using centrifuges or free-vortex

         apparatus                              B01D      B04B,

                                                            B04C

       using magnetic or electrostatic effect   B03C      B03C

        TABLE C

        SOLID/SOLID

     Dry methods

                                             Subclasses dealing with

     Operations                                 Method    Apparatus

     General

     material in bulk                           B07B      B07B 

     Individual sorting                         B07C      B07C 

       Screening, sifting, pneumatic sorting    B07B      B07B 

         using pneumatic tables or jigs         B03B      B03B 

       by magnetic or electrostatic effect      B03C      B03C 

       by centrifugal force                     B07B      B07B 

         using centrifuges or free-vortex

         apparatus                              B07B      B04B,

                                                            B04C

     Wet methods

                                             Subclasses dealing with

     Operations                                 Method    Apparatus

     General                                    B03B      B03B 

       flotation, differential sedimentation    B03D      B03D 

       screening                                B07B      B07B

     Combinations Dry methods - wet methods     B03B 

 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
 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 1/40

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
 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
 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
 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
 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
 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
 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)