E21D15/00 - CPC Classification Index

ClassID:

136076 ⎘

E21D15/00 - CPC Classification

Classification description:

Working-face supports

Sub-classes:

E21D15/002 » {Auxiliary devices in which the prop type is not essential } 2
E21D15/005 » {characterised by the material} 6
E21D15/02 » Non-telescopic props 8
E21D15/14 » Telescopic props 15
E21D15/48 » Chocks or the like 5
E21D15/50 » Component parts or details of props 4
E21D15/58 » Devices for setting props or chocks 0
E21D15/60 » Devices for withdrawing props or chocks 5

Recent Application in this class:

20200318480

Method of recovering room-and-pillar coal pillar by using external replacement supports

20190024508

Load support drum with resilient core member

20180202291

Fractured roof 110 mining method entry-side anti-collapsed structure

20180195389

Anti-spalling blocking bar for large cross-section coal gallery excavation work surface and supporting method

20180187548

Equipment system for no-roadway no-coal-pillar retained roadway mining method

20170248017

Underground mining system for reduced costs, improved efficiencies, higher productivity and a safer working environment through penetrated block extraction

20170019641

Longwall face support in an underground mine

20150267536

Telescopic mine roof support

20140064859

Telescopic mine roof support