Patents-Review.com
ClassID:

136188 ⎘

E21D23/0004 - 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

Sub-classes:
Recent Application in this class:
#1
20240401480
2024-12-05

DIGITAL SPEED REGULATING VALVE FOR ALIGNING HYDRAULIC SUPPORTS IN FULLY MECHANIZED MINING FACE AND CONTROL METHOD THEREOF

 #2
20230243260
2023-08-03

ROOF SUPPORT INCLUDING EXTENDABLE LINKS

 #3
20200232323
2020-07-23

Multi-section non-pillar staggered protected roadway for deep inclined thick coal seam and method for coal pillar filling between sections

 #4
20200095863
2020-03-26

Roof support including extendable links

 #5
20170275993
2017-09-28

Longwall system face alignment detection and steering

 #6
20170159436
2017-06-08

Spray nozzle for underground roof support

 #7
20170159431
2017-06-08

Longwall optimization control

 #8
20170138194
2017-05-18

Method for removing hydraulic support for solid filling coal mining

 #9
20170019641
2017-01-19

Longwall face support in an underground mine

 #10
20160362980
2016-12-15

Systems and methods for monitoring longwall mine roof stability

 #11
20160061036
2016-03-03

Roof support monitoring for longwall system

 #12
20160024922
2016-01-28

ENSURING WORKING CONDITIONS ALONG A LONGWALL FACE

 #13
20110163590
2011-07-07

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

 #14
20110006584
2011-01-13

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

 #15
20100327650
2010-12-30

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

 #16
20100320827
2010-12-23

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