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
 B28
WORKING CEMENT, CLAY, OR STONE
 B28D
WORKING STONE OR STONE-LIKE MATERIALS (machinery for, or methods of, mining or quarrying E21C)
P:10 B28D 1/00
Working stone or stone-like materials, e.g. brick, concrete, not provided for elsewhere; Machines, devices, tools therefor (fine working of gems, jewels, crystals B28D 5/00; working by grinding or polishing B24; devices or means for dressing or conditioning abrasive surfaces B24B 53/00)
 B28D 1/02
·  by sawing
 B28D 1/04
·  ·  with circular saw blades or saw discs (B28D 1/10 takes precedence)
 B28D 1/06
·  ·  with reciprocating saw blades (B28D 1/10 takes precedence)
 B28D 1/08
·  ·  with saw blades of endless cutter-type, e.g. chain saws, strap saws (B28D 1/10 takes precedence)
 B28D 1/10
·  ·  with provision for measuring
 B28D 1/12
·  ·  Saw blades specially adapted for working stone
 B28D 1/14
·  by boring or drilling (rotary drilling machines B23B; percussive tools B25D; earth or rock drilling E21B)  [1,7]
 B28D 1/16
·  by turning
 B28D 1/18
·  by milling, e.g. channelling by means of milling tools
 B28D 1/20
·  by planing, e.g. channeling by means of planing tools
 B28D 1/22
·  by cutting, e.g. incising
 B28D 1/24
·  ·  with cutting discs
 B28D 1/26
·  by impact tools, e.g. by chisels or other tools having a cutting edge (portable percussive machines B25D)
 B28D 1/28
·  ·  without cutting edge
 B28D 1/30
·  to form contours, i.e. curved surfaces, irrespective of the method of working used (for artistic purposes B44B)
 B28D 1/32
·  Methods or apparatus specially adapted for working materials which can easily be split, e.g. mica, slate, schist
P:20 B28D 3/00
Dressing mill discs or rollers (dressing the tools of sawing machines or sawing devices B23D 63/00; treating the cutting members of cutting machines to facilitate cutting B26D 7/08)
 B28D 3/02
·  Machines
 B28D 3/04
·  ·  for grooving rollers
P:0 B28D 5/00
Fine working of gems, jewels, crystals, e.g. of semiconductor material; Apparatus therefor (working by grinding or polishing B24; for artistic purposes B44B; by non-mechanical methods C04B 41/00; non-mechanical after-treatment of single crystals C30B 33/00)  [3]
 B28D 5/02
·  by rotary tools, e.g. drills
 B28D 5/04
·  by tools other than of rotary type, e.g. reciprocating tools
P:30 B28D 7/00
Accessories specially adapted for use with machines or devices of the other groups of this subclass
 B28D 7/02
·  for removing or laying dust, e.g. by spraying liquids; for cooling work
 B28D 7/04
·  for supporting or holding work