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
 B24
GRINDING; POLISHING
 B24

Note(s)

In this class, the following term is used with the meaning indicated:

  • "grinding" is used in its most general sense to mean machining and covers, in particular, "corrective" operations.

 B24D
TOOLS FOR GRINDING, BUFFING, OR SHARPENING (tools for grinding or polishing optical surfaces on lenses or surfaces of similar shape B24B 13/01; grinding heads B24B 41/00; manufacture of abrasive or friction articles or shaped materials containing macromolecular substances C08J 5/14; polishing compositions C09G 1/00; abrasives C09K 3/14)
 B24D

Note(s)

  1. This subclass covers grinding tools for working on any material.
  2. Tools for grinding, buffing or sharpening, specially designed for a particular purpose, which purpose is provided for in a single other place, are classified in that place, e.g. B23F 21/02.  [4]
 B24D
Subclass index
PHYSICAL FEATURES OR CONSTITUENTS OF ABRASIVE BODIES OR SHEETS 3/00
ABRASIVE WHEELS 5/00, 7/00, 9/00, 13/00
FLEXIBLE ABRASIVE MATERIALS 11/00
HAND TOOLS 15/00
OTHER TOOLS 17/00
MANUFACTURE 18/00
P:10 B24D 3/00
Physical features of abrasive bodies, or sheets, e.g. abrasive surfaces of special nature; Abrasive bodies or sheets characterised by their constituents (composition of friction linings F16D 69/02)
 B24D 3/02
·  the constituent being used as bonding agent
 B24D 3/04
·  ·  and being essentially inorganic
 B24D 3/06
·  ·  ·  metallic
 B24D 3/08
·  ·  ·  ·  for close-grained structure, e.g. using metal with low melting point
 B24D 3/10
·  ·  ·  ·  for porous or cellular structure, e.g. for use with diamonds as abrasives
 B24D 3/12
·  ·  ·  water-setting, e.g. concrete
 B24D 3/14
·  ·  ·  ceramic, i.e. vitrified bondings
 B24D 3/16
·  ·  ·  ·  for close grained structure, i.e. of high density
 B24D 3/18
·  ·  ·  ·  for porous or cellular structure
 B24D 3/20
·  ·  and being essentially organic
 B24D 3/22
·  ·  ·  Rubbers
 B24D 3/24
·  ·  ·  ·  for close-grained structure
 B24D 3/26
·  ·  ·  ·  for porous or cellular structure
 B24D 3/28
·  ·  ·  Resins
 B24D 3/30
·  ·  ·  ·  for close-grained structure
 B24D 3/32
·  ·  ·  ·  for porous or cellular structure
 B24D 3/34
·  characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
 B24D 5/00 - 
B24D 7/00
Bonded abrasive wheels
P:40 B24D 5/00
Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
 B24D 5/02
·  Wheels in one piece
 B24D 5/04
·  ·  with reinforcing means
 B24D 5/06
·  with inserted abrasive blocks, e.g. segmental (zonally graded B24D 5/14)
 B24D 5/08
·  ·  with reinforcing means
 B24D 5/10
·  with cooling provisions, e.g. with radial slots
 B24D 5/12
·  Cut-off wheels
 B24D 5/14
·  Zonally-graded wheels; Composite wheels comprising different abrasives
 B24D 5/16
·  Bushings; Mountings
P:50 B24D 7/00
Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
 B24D 7/02
·  Wheels in one piece
 B24D 7/04
·  ·  with reinforcing means
 B24D 7/06
·  with inserted abrasive blocks, e.g. segmental (zonally-graded B24D 7/14)
 B24D 7/08
·  ·  with reinforcing means
 B24D 7/10
·  with cooling provisions
 B24D 7/12
·  with apertures for inspecting the surface to be abraded
 B24D 7/14
·  Zonally-graded wheels; Composite wheels comprising different abrasives
 B24D 7/16
·  Bushings; Mountings
 B24D 7/18
·  Wheels of special form (if specially designed for a particular purpose provided for in a single other class, that class takes precedence)
   
P:20 B24D 9/00
Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper (wheels or drums as machine elements F16)
 B24D 9/02
·  Expansible drums for carrying flexible material in tubular form, e.g. expanded by centrifugal force
 B24D 9/04
·  Rigid drums for carrying flexible material
 B24D 9/06
·  ·  able to be stripped-off from a built-in delivery spool
 B24D 9/08
·  Circular back-plates for carrying flexible material
 B24D 9/10
·  ·  with suction means for securing the material
P:70 B24D 11/00
Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
 B24D 11/02
·  Backings, e.g. foils, webs, mesh fabrics
 B24D 11/04
·  Zonally-graded surfaces
 B24D 11/06
·  Connecting the ends of materials, e.g. for making abrasive belts
 B24D 11/08
·  Equipment for after-treatment of the coated backings, e.g. for flexing the coating
P:30 B24D 13/00
Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
 B24D 13/02
·  acting by their periphery
 B24D 13/04
·  ·  comprising a plurality of flaps or strips arranged around the axis
 B24D 13/06
·  ·  the flaps or strips being individually attached
 B24D 13/08
·  ·  comprising annular or circular sheets packed side by side
 B24D 13/10
·  ·  comprising assemblies of brushes
 B24D 13/12
·  ·  comprising assemblies of felted or spongy material, e.g. felt, steel wool, foamed latex
 B24D 13/14
·  acting by the front face
 B24D 13/16
·  ·  comprising pleated flaps or strips
 B24D 13/18
·  with cooling provisions
 B24D 13/20
·  Mountings for the wheels
P:60 B24D 15/00
Hand tools or other devices for non-rotary grinding, polishing, or stropping
 B24D 15/02
·  rigid; with rigidly-supported operative surface
 B24D 15/04
·  resilient; with resiliently-mounted operative surface
 B24D 15/06
·  specially designed for sharpening cutting edges
 B24D 15/08
·  ·  of knives; of razors
 B24D 15/10
·  ·  of safety-razor blades (devices with mechanically-operated parts B24B 3/50)
P:80 B24D 17/00
Abrasive or polishing tools not covered by groups B24D 3/00-B24D 15/00
P:0 B24D 18/00
Manufacture of grinding tools, e.g. wheels, not otherwise provided for  [4]