E21D23/06 - CPC Classification Index

ClassID:

136222 ⎘

E21D23/06 - CPC Classification

Classification description:

Mine roof supports for step- by- step movement, e.g. in combination with provisions for shifting of conveyors, mining machines, or guides therefor; Structural features of the supporting construction, e.g. linking members between adjacent frames or sets of props; Means for counteracting lateral sliding on inclined floor Special mine caps or special tops of pit-props for permitting step-by-step movement

Sub-classes:

E21D23/063 » {Retractable cantilever extensions therefor} 2
E21D23/066 » {Pivoted cantilever extensions therefor} 4

Recent Application in this class:

20230383653

COAL-BASED SOLID WASTE TRANSPORT AND FILLING INTEGRATED MACHINE MINING SYSTEM AND METHOD

20210270134

CONSTRUCTION METHOD FOR CONTINUOUS MINING MACHINE HAVING DEVICE CONTINUOUSLY PROVIDING PROVISIONAL ROOF SUPPORT

20190203597

Mine roof support, pre-installation assembly for same, and method of installation

20180291739

Spray nozzle for underground roof support

20170159436

Spray nozzle for underground roof support

20150086272

Self-moving tunnel support canopy

20120230775

Shield canopy for a shield-type support

20120163926

Gob shield for shield support and method for the production thereof

20110142551

Shield cap for a shield-type mining support