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 

 B04
CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
 B04

Note(s)

Attention is drawn to the Notes following the subsection title "SEPARATING; MIXING" [pages 10 and 11].  [4]

 B04B
CENTRIFUGES (high-speed drum mills B02C 19/11; domestic spin driers D06F; analysing, measuring or monitoring physical or chemical properties of samples during centrifuging, see the relevant subclasses for these procedures, e.g. G01N)
 B04B

Note(s)

This subclass covers machines or apparatus for separating, mixing, drying, extracting, purifying, or like treating in which centrifugal effects are generated by rotary bowls or other rotors. Where such machines or apparatus involve pumping effects, such effects must be incidental or subsidiary to the treating.

 B04B 1/00 - 
B04B 5/00
Types of centrifuges; Centrifuges characterised by discharging means
 B04B 1/00
Centrifuges with rotary bowls provided with solid jackets for separating predominantly liquid mixtures with or without solid particles
 B04B 1/02
·  without inserted separating walls
 B04B 1/04
·  with inserted separating walls
 B04B 1/06
·  ·  of cylindrical shape
 B04B 1/08
·  ·  of conical shape
 B04B 1/10
·  with discharging outlets in the plane of the maximum diameter of the bowl
 B04B 1/12
·  ·  with continuous discharge
 B04B 1/14
·  ·  with periodical discharge
 B04B 1/16
·  ·  ·  with discharging outlets controlled by the rotational speed of the bowl
 B04B 1/18
·  ·  ·  ·  controlled by the centrifugal force of an auxiliary liquid
 B04B 1/20
·  discharging solid particles from the bowl by a conveying screw coaxial with the bowl axis and rotating relatively to the bowl
 B04B 3/00
Centrifuges with rotary bowls in which solid particles or bodies become separated by centrifugal force and simultaneously sifting or filtering
 B04B 3/02
·  discharging solid particles from the bowl by means co-axial with the bowl axis and moving to and fro, i.e. push-type centrifuges
 B04B 3/04
·  discharging solid particles from the bowl by a conveying screw co-axial with the bowl axis and rotating relatively to the bowl
 B04B 3/06
·  discharging solid particles by vibrating the bowl
 B04B 3/08
·  discharging solid particles by bowl walls in the form of endless bands
 B04B 5/00
Other centrifuges
 B04B 5/02
·  Centrifuges consisting of a plurality of separate bowls rotating round an axis situated between the bowls
 B04B 5/04
·  Radial chamber apparatus for separating predominantly liquid mixtures, e.g. butyrometers
 B04B 5/06
·  Centrifugal counter-current apparatus
 B04B 5/08
·  Centrifuges for separating predominantly gaseous mixtures
 B04B 5/10
·  Centrifuges combined with other apparatus, e.g. electrostatic separators; Sets or systems of several centrifuges (B04B 5/12 takes precedence; magnetic or electrostatic separators B03C)  [2]
 B04B 5/12
·  Centrifuges in which rotors other than bowls generate centrifugal effects in stationary containers
 B04B 7/00 - 
B04B 15/00
Elements; Accessories
 B04B 7/00
Elements of centrifuges (drives B04B 9/00; feeding, charging, or discharging accessories or devices B04B 11/00)
 B04B 7/02
·  Casings; Lids (shock absorbers, vibration dampers F16F)
 B04B 7/04
·  ·  Casings facilitating discharge
 B04B 7/06
·  ·  Safety devices
 B04B 7/08
·  Rotary bowls (centrifugal casting machines B22D)
 B04B 7/10
·  ·  Bowls for shaping solids
 B04B 7/12
·  ·  Inserts, e.g. armouring plates
 B04B 7/14
·  ·  ·  for separating walls of conical shape
 B04B 7/16
·  ·  ·  Sieves or filters (filters in general B01D; sieves in general B07B)
 B04B 7/18
·  ·  formed or coated with sieving or filtering elements (filters in general B01D; sieves in general B07B)
 B04B 9/00
Drives specially designed for centrifuges; Arrangement or disposition of transmission gearing; Suspending or balancing rotary bowls
 B04B 9/02
·  Electric motor drives
 B04B 9/04
·  ·  Direct drive
 B04B 9/06
·  Fluid drive
 B04B 9/08
·  Arrangement or disposition of transmission gearing
 B04B 9/10
·  Control of the drive; Speed regulating
 B04B 9/12
·  Suspending rotary bowls
 B04B 9/14
·  Balancing rotary bowls (balancing in general G01M)
 B04B 11/00
Feeding, charging, or discharging bowls (B04B 1/00, B04B 3/00, B04B 7/04 take precedence)
 B04B 11/02
·  Continuous feeding or discharging; Control arrangements therefor
 B04B 11/04
·  Periodical feeding or discharging; Control arrangements therefor
 B04B 11/05
·  ·  Base discharge
 B04B 11/06
·  Arrangement of distributors or collectors in centrifuges
 B04B 11/08
·  Skimmers or scrapers for discharging
 B04B 13/00
Control arrangements specially designed for centrifuges; Programme control of centrifuges (control arrangements for feed, charge, or discharge B04B 11/00)
 B04B 15/00
Other accessories for centrifuges
 B04B 15/02
·  for cooling, heating, or heat insulating
 B04B 15/04
·  for suppressing the formation of foam
 B04B 15/06
·  for cleaning bowls, filters, sieves, inserts, or the like
 B04B 15/08
·  for ventilating or producing a vacuum in the centrifuge
 B04B 15/10
·  for forming a filtering layer in the rotary bowl
 B04B 15/12
·  for drying or washing the separated solid particles