E21D23/0034 - CPC Classification Index

ClassID:

136195 ⎘

E21D23/0034 - 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 along the working face comprising a goaf shield articulated to a base member

Sub-classes:

E21D23/0039 » {and supported by a strut or by a row of struts parallel to the working face} 3
E21D23/0043 » {and supported by two or more rows of struts parallel to the working face} 6

Recent Application in this class:

20230405741

2023-12-21

Mining shield base lift wear pad

20230405740

2023-12-21

Mining shield base lift methods

20200190982

2020-06-18

Automated support of a gate entry for underground full extraction mining

20200131906

2020-04-30

Roof support connector

20180187547

2018-07-05

Longwall mine construction method N00

20120098325

2012-04-26

Method for the Automated Production of a Defined Face Opening by Means of Slope-Assisted Radar Navigation of the Roller of a Roller Cutter Loader

20110163590

2011-07-07

Longwall Equipment Having Vertically Adjustable Disc Shearer Loader Guided on the Face Conveyor

20110006584

2011-01-13

Method for automatically producing a defined face opening in plow operations in coal mining

20100327650

2010-12-30

Method for automatically creating a defined face opening in longwall mining operations

#10

20100320827

2010-12-23

Method for the controlled maintaining of a distance between the top canopy and the coal face in longwall mining operations