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IPC 7
  B24 - B24B 7/30  
B24B00900-B24B02910
  B24B 31/00 - B24B 57/04  

SECTION B – PERFORMING OPERATIONS; TRANSPORTING


B 24GRINDING; POLISHING


B 24 BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw threads B23G 1/36; 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 31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS  [2]


9/

00Machines 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)

9/

02.characterised by a special design with respect to properties of materials specific to articles to be ground

9/

04..of metal, e.g. skate blades

9/

06..of non-metallic inorganic material, e.g. stone, ceramics, porcelain

9/

08...of glass

9/

10....of plate glass

9/

12....of hollow glassware, e.g. drinking glasses, preserve jars, television picture tube viewing panels

9/

14....of optical work, e.g. lenses, prisms

9/

16...of diamonds, of jewels or the like; Diamond grinders' dops; Dop holders or tongs (for grinding sharp pointed diamonds or sapphires B24B 19/16)  [4]

9/

18..of wood

9/

20..of plastics  [4]


11/

00Machines 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)

11/

02.for grinding balls

11/

04..involving grinding wheels

11/

06...acting by the front faces, e.g. of plane, grooved, or bevelled shape

11/

08...acting by the circumference

11/

10...of cup type


13/

00Machines 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 9/14) [2]

13/

005.Blocking means, chucks or the like; Alignment devices  [4]

13/

01.Specific tools, e.g. bowl-like; Production, dressing or fastening of these tools  [4]

13/

015.of televison picture tube viewing panels, headlight reflectors or the like  [4]

13/

02.by means of tools with abrading surfaces corresponding in shape with the lenses to be made

13/

04.grinding of lenses involving grinding wheels controlled by gearing (B24B 13/06 takes precedence)  [4]

13/

06.grinding of lenses, the tool or work being controlled by information carrying means, e.g. patterns, punched tapes, magnetic tapes  [4]


15/

00Machines or devices designed for grinding seat surfaces; Accessories therefor (for spherical surfaces in general B24B 11/00)

15/

02.in valve housings

15/

03..using portable or mobile machines  [4]

15/

04.on valve members

15/

06.on openings of bottles; on bottle stoppers or the like  [4]

15/

08.for grinding co-operating seat surfaces by moving one over the other



17/

00Special 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 9/14; for grinding or polishing optical lens surfaces B24B 13/06; for grinding non-circular cross-sections B24B 19/08; for grinding trochoidal surfaces B24B 19/09; for grinding cams B24B 19/12; for grinding turbine blades or the like B24B 19/14; such control means per se B23Q 33/00, B23Q 35/00, G05); Accessories therefor  [4]

17/

02.involving mechanical transmission means only

17/

04.involving optical auxiliary means, e.g. optical projection form grinding machines

17/

06..combined with electrical transmission means, e.g. controlled by photoelectric cells

17/

08.involving fluid transmission means only

17/

10.involving electrical transmission means only, e.g. controlled by magnetic tape


19/

00Single 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 3/20, B24B 3/22; grinding screw threads B23G 1/36)

19/

02.for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements  [4]

19/

03..for grinding grooves in glass workpieces, e.g. decorative grooves  [4]

19/

04..for fluting drill shanks

19/

06..for grinding races, e.g. roller races

19/

08.for grinding non-circular cross-sections, e.g. shafts of elliptical or polygonal cross-section

19/

09..for grinding trochoidal surfaces, e.g. in rotor housings of Wankel engines  [4]

19/

10..for grinding pistons

19/

11..for grinding the circumferential surface of rings, e.g. piston rings (grinding end faces B24B 7/16, B24B 7/17)  [4]

19/

12..for grinding cams or camshafts

19/

14.for grinding turbine blades, propeller blades or the like (using grinding belts B24B 21/16)  [4]

19/

16.for grinding sharp-pointed workpieces, e.g. needles, pens, fish hooks, tweezers, record player styli (grinding bevels on diamonds or sapphires B24B 9/16; polishing of needles B24B 29/08)  [4]

19/

18..for grinding carding equipment, e.g. card-clothings (devices for sharpening card-clothings built in, or attachable to, carding machines D01G)

19/

20.for grinding dies (for grinding walls of very fine holes B24B 5/48)

19/

22.characterised by a special design with respect to properties of the material of non-metallic articles to be ground

19/

24..of wood, e.g. furniture

19/

26.for grinding workpieces with arcuate surfaces, e.g. parts of car bodies, bumpers, magnetic recording heads (grinding of spherical surfaces in general B24B 11/00, of optical surfaces on lenses or surfaces of similar shape on other work B24B 13/00)  [4]

19/

28..for grinding shoes or linings of drum brakes (of brake drum hubs B24B 5/06; of brake discs B24B 7/17)  [4]


21/

00Machines or devices using grinding or polishing belts (for sharpening cutting edges of tools B24B 3/00; portable belt-grinding machines B24B 23/06); Accessories therefor  [4]

21/

02.for grinding rotationally symmetrical surfaces

21/

04.for grinding plane surfaces

21/

06..involving members with limited contact area pressing the belt against the work, e.g. shoes sweeping across the whole area to be ground (B24B 21/12 takes precedence)

21/

08...Pressure shoes; Backing belts

21/

10..involving a rigid member, e.g. pressure bar, table, pressing or supporting the belt over substantially its whole span

21/

12..involving a contact wheel or roller pressing the belt against the work

21/

14...Contact wheels; Contact rollers; Belt supporting rolls  [4]

21/

16.for grinding other surfaces of particular shape (single purpose machines for grinding cams or camshafts B24B 19/12)  [4]

21/

18.Accessories

21/

20..for controlling or adjusting the tracking or the tension of the grinding belt  [4]

21/

22..for producing a reciprocation of the grinding belt normal to its direction of movement  [4]


23/

00Portable grinding machines, e.g. hand-guided; Accessories therefor (B24B 7/18 takes precedence; for grinding seat surfaces B24B 15/00; having a flexible shaft B24B 27/027; grinders for cutting-off B24B 27/08; dust extraction equipment B24B 55/10; details or components, e.g. casings, bodies, of portable power-driven tools not particularly related to the operation performed B25F 5/00) [4]

23/

02.with rotating grinding tools; Accessories therefor

23/

03..the tool being driven in a combined movement  [4]

23/

04.with oscillating grinding tools; Accessories therefor  [4]

23/

06.with abrasive belts, e.g. with endless travelling belts; Accessories therefor  [4]

23/

08.Portable grinding machines designed for fastening on workpieces or other parts of particular section, e.g. for grinding commutators


25/

00Grinding machines of universal type


27/

00Other grinding machines or devices

27/

02.Bench grinders  [4]

27/

027.having a flexible shaft  [4]

27/

033.for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface  [4]

27/

04..Grinding machines or devices in which the grinding tool is supported on a swinging arm

27/

06.Grinders for cutting-off

27/

08..being portable  [4]


Polishing surfaces (machines or devices for grinding or polishing glass B24B 7/24, B24B 9/00, B24B 13/00; for grinding or polishing using belts B24B 21/00); Finishing surfaces (B24B 3/00 takes precedence)


29/

00Machines 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 (polishing tools in general B24D 13/00) [4]

29/

02.designed for particular workpieces  [4]

29/

04..for rotationally symmetrical workpieces, e.g. ball-, cylinder- or cone-shaped workpieces  [4]

29/

06..for elongated workpieces having uniform cross-section in one main direction  [4]

29/

08...the cross-section being circular, e.g. tubes, wires, needles  [4]

29/

10..for table cutlery  [4]

  B24 - B24B 7/30    B24B 31/00 - B24B 57/04  
 

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