B
SECTION B — PERFORMING OPERATIONS; TRANSPORTING
 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
  
SHAPING
 B23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR (punching, perforating, making articles by processing sheet metal, tubes, or profiles B21D; wire-working B21F; making pins, needles, or nails B21G; making chains B21L; grinding B24)
 B23

Note(s)

  1. This class covers:
    • operations not provided for in any other class;
    • combinations of operations covered by different subclasses of classes B21-B24, which combinations are covered by subclass B23P, with the exception of subsidiary operations performed in conjunction with main operations covered by a single subclass;
    • features, specific to machine tools, which relate to a requirement or problem of a nature which is not peculiar to a particular kind of machine tool, e.g. feeding work, which are covered by subclass B23Q, although the realisation of these features may differ according to the kind of machine tool concerned. The said subclass covers such features, in general, even if the feature or a specific function, in any particular case, is to some extent peculiar to, or is claimed only for, machine tools designed for one particular operation; only in exceptional cases are such features classified in the subclass for the machine tool concerned. Certain features of this general nature are, however, referred to subclasses relating to particular metal-working operations, especially B23B, in which case the subclasses in question are not restricted, in respect of those features, to the kind of machine tool with which they are primarily concerned.
  2. In this class, the following terms or expressions are used with the meanings indicated:
    • "metal-working" covers the working of other materials unless the context requires otherwise;
    • "kind of operations" and similar expressions relate to such metal-working operations as boring, drilling, milling and grinding;
    • "kind of machine" means a machine designed for a particular kind of metal-working operation (e.g. a lathe);
    • "form of machine" means a machine of a particular kind adapted or arranged for a particular way of working or for particular work, e.g. face-plate lathe, tailstock lathe, turret lathe;
    • "different machines" covers different forms of machines for performing the same type of metal-working operation, e.g. vertical and horizontal boring machines.
  3. If details, components, or accessories have no essential feature specific to machine tools, the more general class, e.g. F16, takes precedence.
 B23P
OTHER WORKING OF METAL; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q)
 B23P

Note(s)

  1. This subclass does not cover non-mechanical operations on non-metallic materials unless such operations are specially mentioned in this subclass.
  2. In this subclass, the following expressions are used with the meanings indicated:
  3. Attention is drawn to the Notes following the title of class B23.
 B23P
Subclass index
METAL-WORKING PROCESSES
Setting of diamonds 5/00
Reconditioning; finishing 6/00; 9/00
Connecting or disconnecting 11/00, 19/00, 21/00
Other processes 6/00, 13/00, 15/00, 17/00
Auxiliary treatments 25/00
COMBINED PROCESSES; MULTI-PURPOSE MACHINES
Reconditioning; finishing 6/00; 9/00
Other combined operations 6/00, 23/00
Auxiliary treatments 25/00
P:0 B23P 5/00
Setting gems or the like on metal parts, e.g. diamonds on tools
P:20 B23P 6/00
Restoring or reconditioning objects (straightening or restoring form of sheet metal, metal rods, metal tubes, metal profiles, or specific articles made therefrom B21D 1/00, B21D 3/00; repairing defective or damaged objects by casting techniques B22D 19/10; procedures or apparatus covered by a single other subclass, see the relevant subclass)  [3]
P:30 B23P 9/00
Treating or finishing surfaces mechanically, with or without calibrating, primarily to resist wear or impact, e.g. smoothing or roughening turbine blades or bearings (treatment covered by a single other subclass, see the relevant subclass, e.g. B24C, C21D 7/00, C22F 1/00); Features of such surfaces not otherwise provided for, their treatment being unspecified
P:70 B23P 11/00
Connecting or disconnecting metal parts or objects by metal-working techniques, not otherwise provided for (connecting sheet metal or metal tubes, rods or profiles B21D 39/00; riveting B21J; soldering, unsoldering, welding B23K; hand tools for connecting wire or strip B25B 25/00; connecting metal parts by adhesives F16B 11/00)  [1,7]
 B23P 11/02
·  by first expanding and then shrinking or vice versa, e.g. by using pressure fluids; by making force fits
P:90 B23P 13/00
Making metal objects by operations essentially involving machining but not covered by a single other subclass (making specific objects B23P 15/00)
P:10 B23P 15/00
Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
 B23P 15/02
·  turbine or like blades from one piece
 B23P 15/04
·  turbine or like blades from several pieces
 B23P 15/06
·  piston rings from one piece
 B23P 15/10
·  pistons
 B23P 15/14
·  gear parts, e.g. gear wheels
 B23P 15/16
·  plates with holes of very small diameter e.g. for spinning or burner nozzles
 B23P 15/24
·  dies (B21C 3/00, B21C 25/00, B21D 37/20 take precedence)
 B23P 15/26
·  heat exchangers
 B23P 15/28
·  cutting tools (sawing tools B23D 63/00, B23D 65/00; files or rasps B23D 73/00)
 B23P 15/30
·  ·  lathes or like tools
 B23P 15/32
·  ·  twist-drills
 B23P 15/34
·  ·  milling cutters
 B23P 15/40
·  ·  shearing tools
 B23P 15/42
·  ·  broaching tools
 B23P 15/46
·  ·  reaming tools
 B23P 15/48
·  ·  threading tools (milling cutters for thread-cutting B23P 15/34)
P:100 B23P 17/00
Metal-working operations, not covered by a single other subclass or another group in this subclass
P:80 B23P 19/00
Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes (hand tools in general B25)  [3]
 B23P 19/02
·  for connecting objects by press fit or for detaching same (B23P 19/10 takes precedence)  [1,7]
 B23P 19/04
·  for assembling or disassembling parts (B23P 19/10 takes precedence)  [1,7]
 B23P 19/06
·  ·  Screw or nut setting or loosening machines
 B23P 19/08
·  ·  Machines for placing washers, circlips, or the like on bolts or other members
 B23P 19/10
·  Aligning parts to be fitted together  [7]
P:60 B23P 21/00
Machines for assembling a multiplicity of different parts to compose units, with or without preceding or subsequent working of such parts, e.g. with programme control
P:50 B23P 23/00
Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass (combined horizontal boring and milling machines B23B 39/00; if the particular kinds of operation are not essential B23Q 37/00-B23Q 41/00; features relating to operations covered by a single subclass, see the relevant subclass for the operation)
P:40 B23P 25/00
Auxiliary treatment of workpieces, before or during machining operations, to facilitate the action of the tool or the attainment of a desired final condition of the work, e.g. relief of internal stress