Patents-Review.com
ClassID:

135844 ⎘

E21C31/02 - CPC Classification

Classification description:

Driving means incorporated in machines for slitting or completely freeing the mineral from the seam for cutting or breaking-down devices

Sub-classes:
Recent Application in this class:
#1
20240125232
2024-04-18

CUTTER HEAD FOR MINING MACHINE

 #2
20220412379
2022-12-29

Turbine fracturing apparatus

 #3
20220349306
2022-11-03

Method for removing material from a rock wall

 #4
20220316333
2022-10-06

GROUND MILLING MACHINE WITH ENERGY SUPPLY SYSTEM, METHOD FOR OPERATING A GROUND MILLING MACHINE, AND METHOD FOR RETROFITTING A GROUND MILLING MACHINE

 #5
20220178254
2022-06-09

CUTTING DEVICE

 #6
20210332536
2021-10-28

Self-propelled construction machine and method for operating a self- propelled construction machine

 #7
20210324737
2021-10-21

Intelligent detection and recognition system and method for coal-rock interface of mine

 #8
20210156250
2021-05-27

Advance and Retreat Automatic Control Method Based on Hydraulic Sensing Conversion and Advance and Retreat Automatic Control System Based on Hydraulic Sensing Conversion

 #9
20210140316
2021-05-13

RECIPROCATING IMPACT BEVEL TOOTH DISCHARGING SHOVEL OF RECIPROCATING IMPACT MINING MACHINE

 #10
20210032989
2021-02-04

Cutting device with tapered cutting element

 #11
20200400019
2020-12-24

DRUM-TYPE SHEARER LOADER, AND A SHEARER DRUM OF A DRUM-TYPE SHEARER LOADER

 #12
20200263540
2020-08-20

Shearer cutting unit with double-speed rollers

 #13
20200217198
2020-07-09

Cutting head having segmented cutting disc

 #14
20200072050
2020-03-05

Cutter head for mining machine

 #15
20200032649
2020-01-30

Rock cutting assembly

 #16
20200011174
2020-01-09

Vertical lifting type drum coal-mining machine without rocker arm

 #17
20200002904
2020-01-02

Self-propelled construction machine and method for operating a self-propelled construction machine

 #18
20190345823
2019-11-14

Roller cutter unit for undercutting machine

 #19
20180345436
2018-12-06

System and method for determining efficiency of an industrial machine

 #20
20180298753
2018-10-18

CONTROL SYSTEM AND METHOD FOR CONTROLLING OPERATION OF AN UNDERGROUND MINING MACHINE

 #21
20170356142
2017-12-14

Self-propelled construction machine and method for operating a self-propelled construction machine

 #22
20170342835
2017-11-30

Cutting device with tapered cutting element

 #23
20170342830
2017-11-30

Cutting head having segmented cutting disc

 #24
20170342829
2017-11-30

Cutting device with wear elements

 #25
20170321550
2017-11-09

Systems and methods for fluid delivery in a longwall mining system

 #26
20170002657
2017-01-05

Cutter head for mining machine

 #27
20170002656
2017-01-05

Non-concentric protruding shaft fixed bearing reciprocating impact part for implementing reciprocating impact part non-concentric protruding shaft fixed bearing method

 #28
20160362979
2016-12-15

Spray system for mining machine

 #29
20160279775
2016-09-29

Stepless variable auto stroke hydraulic breaker system

 #30
20160097276
2016-04-07

Continuous mining machine having core cutting assembly

 #31
20160084082
2016-03-24

Milling device

 #32
20150337506
2015-11-26

Self-propelled construction machine

 #33
20150204190
2015-07-23

Mobile mining

 #34
20150145316
2015-05-28

SMALL-RESISTANCE HIGH-EFFICIENCY MINING DEVICE WITH MULTIPLE LAYERS OF PERCUSSION HEADS

 #35
20150035341
2015-02-05

Auxiliary drivetrain for a cold planer

 #36
20140232169
2014-08-21

Auxiliary drivetrain for a cold planer

 #37
20140232168
2014-08-21

Device machining materials by milling or drilling, and method therefor

 #38
20140084667
2014-03-27

Apparatus for the milling cutting of rock, minerals or other materials

 #39
20140081533
2014-03-20

Slow turning drum for a miner

 #40
20140077578
2014-03-20

Cutter head for mining machine

 #41
20130082510
2013-04-04

Slow turning drum for a miner

 #42
20110248110
2011-10-13

Self-propelled surface milling machine with electrical mill roll drive

 #43
20110156470
2011-06-30

Cutter head containing its motors and gearcase

 #44
20110062766
2011-03-17

Drive for a cutting or grinding machine

 #45
20080217986
2008-09-11

Extendable cutter drum for a boring machine

 #46
20080085659
2008-04-10

Drive For A Cutting Or Grinding Machine

 #47
20060119188
2006-06-08

Drive device for mining machines

 #48
20050206216
2005-09-22

Drum turning mechanism for continuous miners and longwall shearers