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IPC 7
 
B28-B28B01124
  B28B 13/00 - B28B 23/22  

SECTION B – PERFORMING OPERATIONS; TRANSPORTING


B 28WORKING CEMENT, CLAY, OR STONE


B 28 BSHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER (foundry moulding B22C; working stone or stone-like material B28D; shaping of substances in a plastic state, in general B29C; making layered products not composed wholly of these substances B32B; shaping in situ, see the relevant classes of section E)


Note

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

 "the material" means:

 (a)clay or other ceramic compositions;

 (b)slag;

 (c)mixtures with water-setting properties given by clay, cementitious material, or slag.


Subclass Index

PRODUCING ARTICLES 

Shaping articles characterised by method of production, machines therefor 

B28B 1/00, B28B 3/00, B28B 5/00 

Coating of surfaces 

B28B 19/00 

APPARATUS OR PROCESSES FOR TREATING OR WORKING ARTICLES 

B28B 11/00 

MOULDS; AUXILIARY EQUIPMENT 

B28B 7/00; B28B 13/00, B28B 17/00 

GENERAL LAYOUT OF PLANT 

B28B 15/00 

PRODUCTION OF TUBULAR OR REINFORCED ARTICLES 

B28B 21/00, B28B 23/00 



1/

00Producing shaped articles from the material (using presses B28B 3/00; shaping on moving conveyers B28B 5/00; producing tubular articles B28B 21/00)

1/

02.by turning or jiggering

1/

04.by tamping or ramming (followed by pressing B28B 3/02)

1/

08.by vibrating or jolting

1/

087..by means acting on the mould  [6]

1/

093..by means directly acting on the material, e.g. by cores wholly or partly immersed in the material (internal vibrators for compacting concrete in situ E04G 21/08)  [6]

1/

10..and applying pressure otherwise than by the use of presses

1/

14.by simple casting, the material being neither forcibly fed nor positively compacted (for molten material B28B 1/54)

1/

16..for producing layered articles (coating B28B 11/04)

1/

20.by centrifugal or rotational casting (slip-casting involving rotation of the mould B28B 1/28; for molten material B28B 1/54)

1/

24.by injection moulding

1/

26.by slip-casting, i.e. by casting a suspension or dispersion of the material in a liquid-absorbent or porous mould, the liquid being allowed to soak into or pass through the walls of the mould; Moulds therefor (B28B 1/52 takes precedence)

1/

28..involving rotation of the mould

1/

29.by profiling or strickling the material in open moulds or on moulding surfaces

1/

30.by applying the material on to a core, or other moulding surface to form a layer thereon (to form a permanent layer B28B 19/00)

1/

32..by projecting, e.g. spraying (spraying in general B05B, B05D)

1/

34...by centrifugal force

1/

38..by dipping (in general B05C, B05D)

1/

40..by wrapping, e.g. winding

1/

42...using mixtures containing fibres, e.g. for making sheets by slitting the wound layer

1/

44.by forcing cores into filled moulds for forming hollow articles

1/

48.by removing material from solid section preforms for forming hollow articles, e.g. by punching or boring

1/

50.specially adapted for producing articles of expanded material, e.g. cellular concrete (chemical aspects C04B)

1/

52.specially adapted for producing articles from mixtures containing fibres (by wrapping on to mandrels B28B 1/42)

1/

54.specially adapted for producing articles from molten material, e.g. slag (chemical aspects C04B)


3/

00Producing shaped articles from the material by using presses (shaping on moving conveyers B28B 5/00); Presses specially adapted therefor (presses in general B30B)

3/

02.wherein a ram exerts pressure on the material in a moulding space; Ram heads of special form

3/

04..with one ram per mould (B28B 3/10 takes precedence)

3/

06...with two or more ram and mould sets

3/

08..with two or more rams per mould

3/

10..each charge of material being compressed against previously formed body

3/

12.wherein one or more rollers exert pressure on the material

3/

14..with co-operating pocketed rollers

3/

16..with co-operating profiled rollers

3/

18..Roller-and-ring machines, i.e. with roller disposed within a ring and co-operating with the inner surface of the ring

3/

20.wherein the material is extruded

3/

22..by screw or worm

3/

24..by reciprocating plunger

3/

26..Extrusion dies


5/

00Producing shaped articles from the material in moulds or on moulding surfaces, carried or formed by, in, or on conveyers irrespective of the manner of shaping (shaping aspects, see the relevant groups)

5/

02.on conveyers of the endless-belt or chain type (in combination with pressing rollers B28B 3/12)

5/

04.in moulds moved in succession past one or more shaping stations (on turntables B28B 5/06)

5/

06.in moulds on a turntable

5/

08..intermittently rotated

5/

10.in moulds carried on the circumference of a rotating drum

5/

12..intermittently rotated


7/

00Moulds; Cores; Mandrels (specially adapted for the production of tubular articles B28B 21/00)

7/

02.Moulds with adjustable parts

7/

04..one or more of the parts being pivotally mounted

7/

06.Moulds with flexible parts

7/

08.Moulds provided with means for tilting or inverting

7/

10.Moulds with means incorporated therein, or carried thereby, for ejecting the moulded article (devices, not forming part of the mould, for ejecting the moulded article B28B 13/06)

7/

12..by fluid pressure

7/

14.Moulds with means incorporated therein, or carried thereby, for cutting the moulded article into parts (cutting means independent of the mould B28B 11/14)

7/

16.Moulds for making shaped articles with cavities or holes open to the surface

7/

18..the holes passing completely through the article

7/

20.Moulds for making shaped articles with undercut recesses, e.g. dovetails

7/

22.Moulds for making units for prefabricated buildings; Moulds for making prefabricated stair units

7/

24.Unitary mould structures with a plurality of moulding spaces

7/

26.Assemblies of separate moulds

7/

28.Cores; Mandrels

7/

30..adjustable, collapsible, or expanding

7/

32...inflatable (connection of valves to inflatable elastic bodies B60C 29/00)

7/

34.Moulds, cores, or mandrels of special material, e.g. destructible materials (for slip-casting B28B 1/26)

7/

36.Linings or coatings (lubricating surfaces of moulds, cores, or mandrels B28B 7/38)

7/

38.Treating surfaces of moulds, cores, or mandrels to prevent sticking

7/

40.characterised by means for modifying the properties of the moulding material  [5]

7/

42..for heating or cooling, e.g. steam jackets  [5]

7/

44..for treating with gases or degassing, e.g. for de-aerating  [5]

7/

46..for humidifying or dehumidifying  [5]


11/

00Apparatus or processes for treating or working the shaped articles (specially adapted for tubular articles B28B 21/92; decoration or surface treatment in general B05, B44; compacting concrete in situ in connection with building E04G 21/06; drying F26)

11/

02.for attaching appendages, e.g. handles, spouts

11/

04.for coating (glazing, engobing C04B)

11/

06..with powdered or granular material

11/

08.for reshaping the surface, e.g. smoothing, roughening, corrugating, making screw-threads

11/

10..by using presses

11/

12.for removing parts of the articles by cutting

11/

14.for dividing shaped articles by cutting

11/

16..for extrusion

11/

18.for removing burr

11/

22.for cleaning

11/

24.for curing, setting or hardening (processes for influencing or modifying the setting or hardening ability of mortars, concrete or artificial stone compositions, in general C04B 40/00)  [6]

   B28B 13/00 - B28B 23/22  
 

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