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Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
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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 C08J5/14; polishing compositions C09G 1/00; abrasives C09K 3/14)
NOTE
-
This subclass covers grinding tools for working on any material

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

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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)
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B24D 3/001
.
{
the constituent being used as supporting member
}
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B24D 3/002
. .
{
Flexible supporting members, e.g. paper, woven, plastic materials
}
B24D 3/004
. . .
{
with special coatings
}
B24D 3/005
.
{
the constituent being used during pre- or after-treatment (B24D 3/348 takes precedence)
}
B24D 3/007
.
{
the constituent being used as bonding agent between different parts of an abrasive tool
}
B24D 3/008
.
{
Abrasive bodies without external bonding agent
}
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B24D 3/02
.
the constituent being used as bonding agent
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B24D 3/04
. .
and being essentially inorganic
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B24D 3/06
. . .
metallic
{
or mixture of metals with ceramic materials, e.g. hard metals, "cermets", cements
}
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
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B24D 3/14
. . .
ceramic, i.e. vitrified bondings
{
(mixture with metals B24D 3/06)
}
B24D 3/16
. . . .
for close-grained structure, i.e. of high density
B24D 3/18
. . . .
for porous or cellular structure
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B24D 3/20
. .
and being essentially organic
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B24D 3/22
. . .
Rubbers
{
synthetic or natural
}
B24D 3/24
. . . .
for close-grained structure
{
(B24D 3/002 takes precedence)
}
B24D 3/26
. . . .
for porous or cellular structure
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B24D 3/28
. . .
Resins
{
or natural or synthetic macromolecular compounds (B24D 3/22 takes precedence)
}
B24D 3/285
. . . .
{
Reaction products obtained from aldehydes or ketones
}
B24D 3/30
. . . .
for close-grained structure
B24D 3/32
. . . .
for porous or cellular structure
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B24D 3/34
.
characterised by additives enhancing special physical properties, e.g. wear resistance, electric conductivity, self-cleaning properties
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B24D 3/342
. .
{
incorporated in the bonding agent
}
B24D 3/344
. . .
{
the bonding agent being organic
}
B24D 3/346
. .
{
utilised during polishing, or grinding operation
}
. .
{
utilised as impregnating agent for porous abrasive bodies (after-treatments in general B24D 3/005)
}
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Guide Heading:
Bonded abrasive wheels
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Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
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B24D 5/02
.
Wheels in one piece
B24D 5/04
. .
with reinforcing means
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.
with inserted abrasive blocks, e.g. segmental (zonally graded B24D 5/14)
B24D 5/063
. .
{
with segments embedded in a matrix which is rubbed away during the grinding process
}
B24D 5/066
. .
{
with segments mounted axially one against the other
}
B24D 5/08
. .
with reinforcing means
.
with cooling provisions, e.g. with radial slots
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B24D 5/12
.
Cut-off wheels
B24D 5/123
. .
{
having different cutting segments
}
B24D 5/126
. .
{
having an internal cutting edge
}
B24D 5/14
.
Zonally-graded wheels; Composite wheels comprising different abrasives
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B24D 5/16
.
Bushings; Mountings
. .
{
Balancing means
}
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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 7/005
.
{
for cutting spherical surfaces
}
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B24D 7/02
.
Wheels in one piece
B24D 7/04
. .
with reinforcing means
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.
with inserted abrasive blocks, e.g. segmental (zonally-graded B24D 7/14)
B24D 7/063
. .
{
with segments embedded in a matrix which is rubbed away during the grinding process
}
B24D 7/066
. .
{
Grinding blocks; their mountings or supports
}
B24D 7/08
. .
with reinforcing means
.
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;
{
saw cylinders having their cutting rim equipped with abrasive particles for working stone or glass B28D 1/041
}
)
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Wheels or drums supporting in exchangeable arrangement a layer of flexible abrasive material, e.g. sandpaper (wheels or drums as machine elements F16)
B24D 9/003
.
{
Wheels having flaps of flexible abrasive material supported by a flexible material
}
B24D 9/006
.
{
Tools consisting of a rolled strip of flexible material
}
B24D 9/02
.
Expansible drums for carrying flexible material in tubular form, e.g. expanded by centrifugal force
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B24D 9/04
.
Rigid drums for carrying flexible material
B24D 9/06
. .
able to be stripped-off from a built-in delivery spool
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B24D 9/08
.
Circular back-plates for carrying flexible material
B24D 9/085
. .
{
Devices for mounting sheets on a backing plate
}
B24D 9/10
. .
with suction means for securing the material
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Constructional features of flexible abrasive materials; Special features in the manufacture of such materials
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B24D 11/001
.
{
Manufacture of flexible abrasive materials
}
B24D 11/003
. .
{
without embedded abrasive particles (B24D 11/005 takes precedence)
}
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B24D 11/005
. .
{
Making abrasive webs
}
B24D 11/006
. . .
{
without embedded abrasive particles
}
B24D 11/008
.
{
Finishing manufactured abrasive sheets, e.g. cutting, deforming
}
B24D 11/02
.
Backings, e.g. foils, webs, mesh fabrics
B24D 11/04
.
Zonally-graded surfaces
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B24D 11/06
.
Connecting the ends of materials, e.g. for making abrasive belts
B24D 11/065
. .
{
Treatment of the ends of flexible abrasive materials before connecting them
}
B24D 11/08
.
Equipment for after-treatment of the coated backings, e.g. for flexing the coating
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Wheels having flexibly-acting working parts, e.g. buffing wheels; Mountings therefor
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B24D 13/02
.
acting by their periphery
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B24D 13/04
. .
comprising a plurality of flaps or strips arranged around the axis
B24D 13/045
. . .
{
comprising flaps not covering the entire periphery of the wheel
}
B24D 13/06
. .
the flaps or strips being individually attached
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B24D 13/08
. .
comprising annular or circular sheets packed side by side
B24D 13/085
. . .
{
comprising flaps with a circular sheet on each 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
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B24D 13/14
.
acting by the front face
B24D 13/142
. .
{
Wheels of special form
}
B24D 13/145
. .
{
having a brush-like working surface
}
. .
{
comprising assemblies of felted or spongy material; comprising pads surrounded by a flexible material
}
B24D 13/16
. .
comprising pleated flaps or strips
.
with cooling provisions
B24D 13/20
.
Mountings for the wheels
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Hand tools or other devices for non-rotary grinding, polishing, or stropping
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B24D 15/02
.
rigid; with rigidly-supported operative surface
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B24D 15/023
. .
{
using in exchangeable arrangement a layer of flexible material
}
B24D 15/026
. . .
{
able to be stripped-off from a built-in delivery spool
}
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B24D 15/04
.
resilient; with resiliently-mounted operative surface
B24D 15/045
. .
{
Glove-shaped abrasive devices
}
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.
specially designed for sharpening cutting edges
B24D 15/061
. .
{
for electric shaving blades
}
B24D 15/063
. .
{
for grinding shears, scissors
}
B24D 15/065
. .
{
for sharpening both knives and scissors
}
B24D 15/066
. .
{
for sharpening skate blades, i.e. blades having two sharp edges defined by three surfaces intersecting in pairs at an angle of substantially 90°
}
. .
{
for sharpening ski edges, i.e. sharp edges defined by two surfaces intersecting at an angle of substantially 90°
}
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B24D 15/08
. .
of knives; of razors
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B24D 15/081
. . .
{
with sharpening elements in interengaging or in mutual contact
}
B24D 15/082
. . . .
{
the elements being rotatable
}
B24D 15/084
. . .
{
the sharpening elements being fitted to knife sheaths, holders or handles
}
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B24D 15/085
. . .
{
with reciprocating whetstones
}
B24D 15/087
. . . .
{
having a crank handle
}
B24D 15/088
. . .
{
with whetting leather
}
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B24D 15/10
. .
of safety-razor blades (devices with mechanically-operated parts B24B 3/50)
B24D 15/105
. . .
{
Holders therefor
}
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Manufacture of grinding tools
{
or other grinding devices
}
, e.g. wheels, not otherwise provided for
B24D 18/0009
.
{
using moulds or presses
}
B24D 18/0018
.
{
by electrolytic deposition
}
B24D 18/0027
.
{
by impregnation
}
B24D 18/0036
.
{
by winding up abrasive bands
}
B24D 18/0045
.
{
by stacking sheets of abrasive material
}
B24D 18/0054
.
{
by impressing abrasive powder in a matrix
}
B24D 18/0063
.
{
by extrusion
}
B24D 18/0072
.
{
using adhesives for bonding abrasive particles or grinding elements to a support, e.g. by gluing
}
B24D 18/0081
.
{
of wire-reinforced grinding tools
}
B24D 18/009
.
{
Tools not otherwise provided for
}
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Subject matter not provided for in other groups of this subclass
{
(B28D 1/124 takes precedence)
}
.
{
Segments of abrasive wheels
}

B24D 2201/00
Bushings or mountings integral with the grinding wheel
B24D 2203/00
Tool surfaces formed with a pattern
B24D 2205/00
Grinding tools with incorporated marking device
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013