ClassID:

135798

E21C27/02 - CPC Classification

Classification description:

Machines which completely free the mineral from the seam solely by slitting

Sub-classes:
Recent Application in this class:
#1
20250146413
2025-05-08

METHOD AND SYSTEM FOR MONITORING COAL SHEARER STATUS BASED ON DIGITAL TWINNING, AND ELECTRONIC DEVICE

#2
20250084763
2025-03-13

Method For Controlling A Shearer In Three Dimensions And System

#3
20240183272
2024-06-06

GUIDE SHOE FOR MINING MACHINE

#4
20230228192
2023-07-20

Cutting device and support for same

#5
20220403738
2022-12-22

Cable handling system for longwall mining machines

#6
20220154576
2022-05-19

Cutting assembly for longwall mining system

#7
20220136390
2022-05-05

Method and device for monitoring operation of a mining machine unit

#8
20220074305
2022-03-10

Cutting head for rock cutting machine

#9
20210254463
2021-08-19

Impact event logging system and method for longwall shearer

#10
20210254461
2021-08-19

Impact sensor and control system for a longwall shearer

#11
20210102463
2021-04-08

Mining machine with articulating boom and independent material handling system

#12
20210047927
2021-02-18

Absorption-induction convectional dust-controlling/removing air/fog curtain device of fully-mechanized working face and method thereof

#13
20210032989
2021-02-04

Cutting device with tapered cutting element

#14
20200347723
2020-11-05

Cutting device and support for same

#15
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

#16
20200217198
2020-07-09

Cutting head having segmented cutting disc

#17
20200190982
2020-06-18

Automated support of a gate entry for underground full extraction mining

#18
20200024943
2020-01-23

Cable handling system for longwall mining machines

#19
20200011174
2020-01-09

Vertical lifting type drum coal-mining machine without rocker arm

#20
20200011173
2020-01-09

Mining machine with multiple cutter heads

#21
20190360371
2019-11-28

Industrial machine including a fluid sensor and method of operating the same

#22
20190344970
2019-11-14

Conveyor system and support frame therefor

#23
20190161283
2019-05-30

Conveyor system and method for removing slack in conveyor

#24
20190039832
2019-02-07

Chain conveyor and drive sprocket for same

#25
20180347357
2018-12-06

Adaptive pitch steering in a longwall shearing system

#26
20180229939
2018-08-16

Conveyor pan

#27
20180171622
2018-06-21

REMOTE COMMAND AND CONTROL CENTER FOR LONGWALL MINING SYSTEM

#28
20180105366
2018-04-19

Take-up mechanism for conveyor system

#29
20180051562
2018-02-22

Mining machine with articulating boom and independent material handling system

#30
20180051561
2018-02-22

Cutting device and support for same

#31
20180030830
2018-02-01

Controlling an output of a mining system

#32
20180010455
2018-01-11

Conveyor bridge

#33
20170355529
2017-12-14

Conveyor system and method for removing slack in conveyor

#34
20170342835
2017-11-30

Cutting device with tapered cutting element

#35
20170342830
2017-11-30

Cutting head having segmented cutting disc

#36
20170342829
2017-11-30

Cutting device with wear elements

#37
20170321550
2017-11-09

Systems and methods for fluid delivery in a longwall mining system

#38
20170275993
2017-09-28

Longwall system face alignment detection and steering

#39
20170226853
2017-08-10

DEVICE AND METHOD FOR LONGWALL MINING INSTALLATION COURSE DETERMINATION

#40
20170225899
2017-08-10

Conveyor system and support frame therefor

#41
20170221214
2017-08-03

Imaging-based interface sensor and control device for mining machines

#42
20170211383
2017-07-27

Mining machine with multiple cutter heads

#43
20170203924
2017-07-20

Take-up mechanism for conveyor system

#44
20170167259
2017-06-15

Guide shoe for mining machine

#45
20170159431
2017-06-08

Longwall optimization control

#46
20170122106
2017-05-04

Spray system for dust control on a mining machine

#47
20170074097
2017-03-16

Trapping shoe lubrication system

#48
20160362980
2016-12-15

Systems and methods for monitoring longwall mine roof stability

#49
20160362979
2016-12-15

Spray system for mining machine

#50
20160356159
2016-12-08

Systems and methods for controlling a conveyor in a mining system

#51
20160356158
2016-12-08

Conveyor bridge

#52
20160348503
2016-12-01

Controlling an output of a mining system

#53
20160265354
2016-09-15

MINING MACHINE WITH DRIVEN DISC CUTTERS

#54
20160097277
2016-04-07

Fiber optic shape sensing adapted to cutter module of highwall miner

#55
20160024922
2016-01-28

ENSURING WORKING CONDITIONS ALONG A LONGWALL FACE

#56
20140203621
2014-07-24

System for controlling speed of travel in a longwall shearer

#57
20140084666
2014-03-27

Lump breaker for mining machine

#58
20130287485
2013-10-31

Cleat for joining chassis modules

#59
20130154341
2013-06-20

Articulated shearer

#60
20130093236
2013-04-18

Demountable pin and collet assembly and method to securely fasten a ranging arm to a longwall shearer using such assembly

#61
20130057044
2013-03-07

Mining machine with driven disc cutters

#62
20120253584
2012-10-04

Imaging-based interface sensor and control device for mining machines

#63
20120104831
2012-05-03

Heading Machine

#64
20110309669
2011-12-22

Cooling a ranging arm gear case on a longwall shearer

#65
20110227397
2011-09-22

Mining machine with driven disc cutters

#66
20100301660
2010-12-02

Cooling a ranging arm gear case on a longwall shearer

#67
20100276982
2010-11-04

Method and apparatus for maintaining longwall face alignment

#68
20090058172
2009-03-05

Mining machine with driven disc cutters

#69
20060232122
2006-10-19

Underground mining machine

#70
20050067879
2005-03-31

Combination panline and utility drilling or bolting unit