|  | B |
SECTION B — PERFORMING OPERATIONS; TRANSPORTING

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 Fulltext... Hierarchy... Expanded...B24B 13/01; grinding heads Fulltext... Hierarchy... Expanded...B24B 41/00; manufacture of abrasive or friction articles or shaped materials containing macromolecular substances Fulltext... Hierarchy... Expanded...C08J 5/14; polishing compositions Fulltext... Hierarchy... Expanded...C09G 1/00; abrasives Fulltext... Hierarchy... Expanded...C09K 3/14)

|  | B24D |
Note(s) 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. Fulltext... Hierarchy... Expanded...B23F 21/02. [4]

|  | 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 Fulltext... Hierarchy... Expanded...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

|  | 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 Fulltext... Hierarchy... Expanded...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

|  | 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 Fulltext... Hierarchy... Expanded...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)

|  | 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 Fulltext... Hierarchy... Expanded...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

|  | 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

|  | 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

|  | 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 Fulltext... Hierarchy... Expanded...B24B 3/50)

|  | B24D 17/00 |
Abrasive or polishing tools not covered by any preceding group in this subclass

|  | B24D 18/00 |
Manufacture of grinding tools, e.g. wheels, not otherwise provided for [4]