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IPC Subgroup
B28B 21/36

applying fluid pressure or vacuum to the material

Introduced: September 1968

Last revised: January 2006

Full Title

Methods or machines specially adapted for the production of tubular articles > by casting into moulds > using compacting means > applying fluid pressure or vacuum to the material

Classification Context

Section:
PERFORMING OPERATIONS; TRANSPORTING
Class:
WORKING CEMENT, CLAY, OR STONE
Subclass:
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER

2 direct subcodes

Child Classifications

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  • B28B 21/38 introducing the material wholly or partly under pressure
  • B28B 21/4 by evacuating one or more of the mould parts