B28B21/24 - CPC Classification Index

ClassID:

47583 ⎘

B28B21/24 - CPC Classification

Classification description:

Methods or machines specially adapted for the production of tubular articles by casting into moulds using compacting means using rotatable mould or core parts using compacting heads, rollers, or the like

Sub-classes:

B28B21/242 » {the working diameter of the compacting mechanism being adjustable, e.g. the compacting rollers on the head being displaceable} 1
B28B21/245 » {using a horizontal compacting roller in a horizontally rotatable mould} 1
B28B21/247 » {the rollers of the compaction head being driven, e.g. to overcome or modify the tangential force} 2
B28B21/26 » with a packer head serving as a sliding mould or provided with guiding means for feeding the material 3
B28B21/28 » combined with vibration means 7

Recent Application in this class:

20130302462

2013-11-14

Concrete roller head

20130026162

2013-01-31

PRECAST CONCRETE METER PIT AND APPARATUS FOR MAKING SAME

20120183707

2012-07-19

Manufacturing apparatus and method of forming a preform

20090178365

2009-07-16

METHOD OF FABRICATING A PRECAST CONCRETE METER PIT

20090084793

2009-04-02

Method for making precast concrete meter pit

20060169868

2006-08-03

Precast concrete meter pit and method and apparatus for making same