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.

 B24B
MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw threads B23G 1/00; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G 1/00; abrasives C09K 3/14; electrolytic etching or polishing C25F 3/00; grinding arrangements for use on assembled railway tracks E01B 31/00); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS  [2]
 B24B

Note(s)

  1. In this subclass, the following term is used with the meaning indicated:
    • "polishing" means the smoothing of a surface, i.e. a surface improvement but no improvement of the dimensional accuracy as would occur in a "grinding" operation.   [4]
  2. Attention is drawn to Notes (1) and (2) following the title of subclass B23F.   [4]
 B24B
Subclass index
GRINDING OR POLISHING PROCESSES NOT PARTICULAR TO SPECIFIC MACHINES, DEVICES OR WORK 1/00
GRINDING; GENERAL FEATURES OF GRINDING, POLISHING, OR FINISHING
Grinding of surfaces with simple shapes 5/00, 7/00, 9/00, 11/00
Grinding of surfaces of special shape 3/00, 13/00 - 19/00
Grinding or polishing using abrasive belts 21/00
Portable machines 23/00
Other machines 25/00, 27/00
Component parts 41/00 - 47/00
Measuring, indicating, controlling; Safety 49/00, 51/00; 55/00
Dressing or conditioning of grinding tools; Feeding or applying grinding, polishing or lapping agents 53/00; 57/00
POLISHING OR FINISHING
Polishing, burnishing 29/00, 39/00
by tumbling 31/00
Honing, superfinishing 33/00, 35/00
Lapping 37/00
 B24B 1/00 - 
B24B 27/00

Note(s)

In groups B24B 1/00-B24B 27/00, in connection with glass the terms "grinding" and "polishing" are treated as being equivalent. [4]

P:220 B24B 1/00
Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes (processes characterised by the use of special machines or devices, see the relevant places for those machines or devices)  [4]
 B24B 1/04
·  subjecting the grinding or polishing tools, the abrading or polishing medium or work to vibration, e.g. grinding with ultrasonic frequency (polishing or abrading surfaces on work by means of tumbling apparatus B24B 31/00, involving oscillating or vibrating containers B24B 31/00; superfinishing surfaces on work, e.g. by means of abrading blocks reciprocating with high frequency, B24B 35/00)  [4]
P:80 B24B 3/00
Sharpening cutting edges, e.g. of tools; Accessories therefor, e.g. for holding the tools (sharpening of drills by fluting the shunk B24B 19/02; non-abrasive sharpening devices for scythes, sickles, or the like A01D 3/00; sharpening devices designed as components of machines with cutters, see the relevant places for the machines, e.g. A01D 75/00, B26D 7/08; sharpening of saw teeth B23D 63/00; sharpening of files or rasps B23D 73/00; grinding of die-stocks or chasers B23G 1/00; sharpening of razor blades or razors by an abrasive block without mechanisms B24D)
 B24B 5/00 - 
B24B 15/00
Grinding surfaces of particular forms
P:160 B24B 5/00
Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor (B24B 11/00-B24B 21/00 take precedence; honing machines or devices using abrading blocks performing axial and rotary movements superimposed on one another B24B 33/00; entreless grinding of threads B23G 1/00)  [2]
P:170 B24B 7/00
Machines or devices designed for grinding plane surfaces on work, including polishing plane glass surfaces; Accessories therefor (B24B 21/00 takes precedence; for combined grinding of surfaces of revolution and of adjacent plane surfaces on work B24B 5/00; honing of plane surfaces on work B24B 33/00)  [4]
 B24B 7/20
·  characterised by a special design with respect to properties of the material of non-metallic articles to be ground
P:140 B24B 9/00
Machines or devices designed for grinding edges or bevels on work or for removing burrs; Accessories therefor (B24B 21/00 takes precedence; for sharpening cutting edges on tools B24B 3/00; removing burrs by loose abrasive material B24B 31/00)
 B24B 9/02
·  characterised by a special design with respect to properties of materials specific to articles to be ground
 B24B 9/06
·  ·  of non-metallic inorganic material, e.g. stone, ceramics, porcelain (for grinding sharp pointed diamonds or sapphires B24B 19/00)
P:110 B24B 11/00
Machines or devices designed for grinding spherical surfaces or parts of spherical surfaces on work; Accessories therefor (specially designed for optical surfaces B24B 13/00, for seat surfaces B24B 15/00)
P:90 B24B 13/00
Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other work; Accessories therefor (edging optical work, e.g. lenses, prisms, B24B 9/06)  [2]
 B24B 13/005
·  Blocking means, chucks or the like; Alignment devices  [4]
P:100 B24B 15/00
Machines or devices designed for grinding seat surfaces; Accessories therefor (for spherical surfaces in general B24B 11/00)
P:10 B24B 17/00
Special adaptations of machines or devices for grinding controlled by patterns, drawings, magnetic tapes or the like (machines or devices so-controlled for grinding the edges of lenses B24B 9/06; for grinding or polishing optical lens surfaces B24B 13/00; for grinding non-circular cross-sections B24B 19/00; for grinding trochoidal surfaces B24B 19/00; for grinding cams B24B 19/00; for grinding turbine blades or the like B24B 19/00; such control means per se B23Q 33/00, B23Q 35/00, G05); Accessories therefor  [4]
P:150 B24B 19/00
Single purpose machines or devices for particular grinding operations not covered by any other main group (tapering, chamfering or relief cutting of taps or reamers B24B 3/00; grinding bevels on diamonds or sapphires B24B 9/06; polishing of needles B24B 29/00; grinding screw threads B23G 1/00; devices for sharpening card-clothings built in, or attachable to, carding machines D01G)
 B24B 19/02
·  for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements  [4]
P:130 B24B 21/00
Machines or devices using grinding or polishing belts (for sharpening cutting edges of tools B24B 3/00; portable belt-grinding machines B24B 23/00); Accessories therefor  [4]
 B24B 21/04
·  for grinding plane surfaces
P:120 B24B 23/00
Portable grinding machines, e.g. hand-guided; Accessories therefor (B24B 7/00 takes precedence; for grinding seat surfaces B24B 15/00; having a flexible shaft B24B 27/00; grinders for cutting-off B24B 27/08; dust extraction equipment B24B 55/00; details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F 5/00)  [4]
P:200 B24B 25/00
Grinding machines of universal type
P:210 B24B 27/00
Other grinding machines or devices
 B24B 27/06
·  Grinders for cutting-off
 B24B 27/08
·  ·  being portable  [4]
 B24B 29/00 - 
B24B 39/00
Polishing surfaces; Finishing surfaces
P:190 B24B 29/00
Machines or devices for polishing surfaces on work by means of tools made of soft or flexible material with or without the application of solid or liquid polishing agents (machines or devices for grinding or polishing glass B24B 7/20, B24B 9/06, B24B 13/00; for grinding or polishing using belts B24B 21/00; polishing tools in general B24D 13/00)  [4]
P:180 B24B 31/00
Machines or devices designed for polishing or abrading surfaces on work by means of tumbling apparatus or other apparatus in which the work or the abrasive material is loose; Accessories therefor (machines or devices for grinding or polishing glass B24B 7/20, B24B 9/06, B24B 13/00; abrasive blasting machines B24C 3/00)
P:20 B24B 33/00
Honing machines or devices; Accessories therefor
P:70 B24B 35/00
Machines or devices designed for superfinishing surfaces on work, i.e. by means of abrading blocks reciprocating with high frequency (B24B 3/00 takes precedence)
P:50 B24B 37/00
Lapping machines or devices, i.e. requiring pulverulent abrading substances inserted between a lap of relatively soft but rigid material and the surface to be lapped; Accessories therefor (B24B 3/00 takes precedence)
 B24B 37/02
·  designed for working surfaces of revolution
 B24B 37/04
·  designed for working plane surfaces
P:60 B24B 39/00
Burnishing machines or devices, i.e. requiring pressure members for compacting the surface zone (modifying the physical properties or structure of metal by burnishing C21D 7/00, C22F 1/00); Accessories therefor (B24B 3/00 takes precedence)
 B24B 41/00 - 
B24B 47/00
Component parts of general applicability for grinding machines or devices
P:270 B24B 41/00
Component parts of grinding machines or devices, such as frames, beds, carriages or headstocks
 B24B 41/06
·  Work supports, e.g. adjustable steadies
P:260 B24B 45/00
Means for securing grinding wheels on rotary arbors (suppression of vibrations in systems F16F 15/00; testing static or dynamic balancing of machines G01M 1/00)
P:250 B24B 47/00
Drives or gearings for grinding machines or devices; Equipment therefor
 B24B 49/00 - 
B24B 51/00
Measuring; Indicating; Controlling
P:30 B24B 49/00
Measuring or gauging equipment for controlling the feed movement of the grinding tool or work; Arrangements of indicating or measuring equipment, e.g. for indicating the start of the grinding operation (B24B 33/00 takes precedence; if applicable to other machine tools, B23Q 15/00-B23Q 17/00 take precedence; gauging instruments in general G01B)
 B24B 49/02
·  according to the instantaneous size and required size of the workpiece acted upon, the measuring or gauging being continuous or intermittent (B24B 49/12 takes precedence)  [4]
 B24B 49/08
·  involving liquid or pneumatic means
 B24B 49/10
·  involving electrical means (B24B 49/02, B24B 49/08 take precedence)
 B24B 49/12
·  involving optical means
 B24B 49/16
·  taking regard of the load
P:40 B24B 51/00
Arrangements for automatic control of a series of individual steps in grinding a workpiece
P:240 B24B 53/00
Devices or means for dressing or conditioning abrasive surfaces (compensation for grinding wheel abrasion resulting from dressing B24B 47/00)  [4]
 B24B 53/007
·  Cleaning of grinding wheels  [4]
 B24B 53/04
·  of cylindrical or conical surfaces on abrasive tools or wheels  [4]
 B24B 53/06
·  of profiled abrasive wheels
 B24B 53/12
·  Dressing tools; Holders therefor  [4]
P:0 B24B 55/00
Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition (of general applicability for machine tools B23Q 11/00; in general F16P)
P:230 B24B 57/00
Devices for feeding, applying, grading or recovering grinding, polishing or lapping agents (for abrasive blasting B24C 1/00, B24C 7/00)  [4]