ClassID:

136183

E21D21/008 - CPC Classification

Classification description:

Anchoring-bolts for roof, floor in galleries or longwall working , or shaft-lining protection Anchoring or tensioning means

Recent Application in this class:
#1
20260055706
2026-02-26

Dolly for Rockbolt

#2
20250369355
2025-12-04

A Mine Bearing Element

#3
20250264022
2025-08-21

ROCK BOLT

#4
20250198288
2025-06-19

Dynamic Rockbolt

#5
20250034998
2025-01-30

ROCK BOLT

#6
20240368991
2024-11-07

TUNNEL CONSTRAINT ANCHOR CABLE AND METHOD FOR IMPROVING STABILITY OF INITIAL SUPPORT STRUCTURE

#7
20240360760
2024-10-31

Dolly for Rockbolt

#8
20240344458
2024-10-17

DRIVER SOCKET FOR INSTALLATION OF A GROUND REINFORCEMENT BOLT

#9
20240344457
2024-10-17

Anchor Arrangement

#10
20240287903
2024-08-29

DOUBLE-WEDGE ROCK BOLT

#11
20240175360
2024-05-30

Carbon Fiber Rock Bolt

#12
20240175358
2024-05-30

DRILLING AND BOLTING TOOL

#13
20240102386
2024-03-28

DEFORMABLE ANCHOR CABLE

#14
20230392500
2023-12-07

HOLLOW ROD SHEAR CONNECTOR HAVING STATIC MIXING SYSTEM AND METHOD FOR SETTING A HOLLOW ROD SHEAR CONNECTOR IN A ROCK LAYER

#15
20230383652
2023-11-30

HOLLOW ROD COMPOSITE ANCHOR WITH IMPROVED SETTING CAPABILITY AND METHOD FOR SETTING A HOLLOW ROD COMPOSITE ANCHOR INTO A ROCK STRATUM

#16
20230349293
2023-11-02

Support method of preset internal cable for in-situ tunnel expansion project

#17
20230097145
2023-03-30

Multi-stage control negative Poisson self-expanding anchor apparatus

#18
20230095265
2023-03-30

METHOD AND SYSTEM FOR TEMPORARY COATING SUPPORTING AND PERMANENT BOLT SUPPORTING

#19
20220397037
2022-12-15

Construction method for deformable anchor cable capable of being prestressed

#20
20220316335
2022-10-06

Friction stabilizer

#21
20220282619
2022-09-08

Method and device for carrying out grouting between adjacent gateroads in internal-staggered split-level coal mining

#22
20220010681
2022-01-13

Type of energy-absorbing rock bolt device with umbrella-shaped structure

#23
20210396138
2021-12-23

Self-anchored opposite-pulling anti-impact anchor cable for sectional coal pillars and using method thereof

#24
20210381376
2021-12-09

System and method for supporting sidewalls or ribs in coal mines

#25
20210324739
2021-10-21

Retainer device for a rock anchor, rock anchor system and associated installation method

#26
20210270133
2021-09-02

Method of ensuring controlled failure of rock bolt bar

#27
20210246787
2021-08-12

Umbrella-shaped anchor for quick reinforcement of rock mass, and application method

#28
20210222554
2021-07-22

Self-drilling hybrid rock anchor

#29
20210087931
2021-03-25

Grouting bolt-cable composite beam and supporting method for advanced support of fractured surrounding rock in deep coal mines

#30
20210071525
2021-03-11

Adapted grout delivery sleeve

#31
20210032829
2021-02-04

Elongated connecting element for anchoring members and method for providing and installing an elongated connecting element for anchoring members

#32
20210017860
2021-01-21

Mining hydraulic constant-resistance deforming and automatic pressure relieving anchor rod and working method thereof

#33
20200377424
2020-12-03

Use of amorphous calcium carbonate in a fire-resistant inorganic mortar system based on aluminous cement to increase load values at elevated temperatures

#34
20200340359
2020-10-29

End Fitting for a Cable Bolt Assembly

#35
20200318479
2020-10-08

Rock bolt with meshing adapter

#36
20200300089
2020-09-24

Encapsulation system and method of installing a rock bolt

#37
20200277857
2020-09-03

Rock bolt

#38
20200277856
2020-09-03

Rock bolt

#39
20200217201
2020-07-09

Extensible reaming self-anchoring anchor rod and supporting method thereof

#40
20200131729
2020-04-30

Umbrella anchorage

#41
20200072051
2020-03-05

Retainer device for a rock anchor, rock anchor system and associated installation method

#42
20200063558
2020-02-27

Friction rock bolt

#43
20200063556
2020-02-27

Friction rock bolt

#44
20200011178
2020-01-09

Energy-absorbing rockbolt

#45
20200011177
2020-01-09

Rock bolt installation tool

#46
20190376388
2019-12-12

Composite yieldable rock anchor with improved deformation range

#47
20190316467
2019-10-17

Friction bolt

#48
20190292909
2019-09-26

System for re-tensioning mine roof channels

#49
20190153862
2019-05-23

METHOD AND SYSTEM OF COAL MINE ROOF STABILIZATION

#50
20190145258
2019-05-16

Pumpable resin system

#51
20190100998
2019-04-04

Groutable rock anchor assembly

#52
20190017241
2019-01-17

Ground anchor of which stress can be self-diagnosed, and construction method therefor

#53
20180347358
2018-12-06

Friction bolt

#54
20180291737
2018-10-11

Grout delivery system

#55
20180223664
2018-08-09

Anchoring Device and Method

#56
20180202122
2018-07-19

Sectional modular large-deformation-resistant impact-resistant composite rock bolt and its assembling method

#57
20180119492
2018-05-03

Gantry and quick connect mechanism for interchanging drilling and bolting assemblies and method of interchanging bolting assemblies

#58
20180066519
2018-03-08

Pumpable resin system

#59
20180030832
2018-02-01

Tensionable cable anchor assembly and a tensioning device for tensioning same

#60
20180023391
2018-01-25

Slotted tubular anchor

#61
20180002885
2018-01-04

Rock anchor foundation structure suitable for mountain photovoltaic module and construction method of rock anchor foundation structure

#62
20170342836
2017-11-30

Method of supporting a rock wall

#63
20170335537
2017-11-23

Self-boring anchoring device and method of installing such an anchoring device

#64
20170314394
2017-11-02

End coupling for a rock bolt

#65
20170298732
2017-10-19

ROCK BOLT

#66
20170211385
2017-07-27

Spring suspension clip

#67
20170191269
2017-07-06

HIGH-STRENGTH FASTENING DEVICE

#68
20170067340
2017-03-09

UNDERGROUND SECURING SYSTEM COMPRISING A ROCK BOLT THAT INCLUDES AN ATTACHMENT DEVICE

#69
20160348505
2016-12-01

Method and system of coal mine roof stabilization

#70
20160326873
2016-11-10

Locally anchored self-drilling hollow rock bolt

#71
20160186564
2016-06-30

Friction bolt assembly

#72
20160017709
2016-01-21

Anti-Friction Washer System

#73
20160003279
2016-01-07

Anchor head and anchor nut for a tension anchor

#74
20150376902
2015-12-31

Tensionable threaded rebar bolt

#75
20150368894
2015-12-24

Anchor and method of using the same

#76
20150354354
2015-12-10

Rock bolt

#77
20150345293
2015-12-03

SUPPORT CHANNEL

#78
20150322786
2015-11-12

Expandable Bolt With Thrust Element

#79
20150322785
2015-11-12

Rock anchor bolt

#80
20150226248
2015-08-13

Torque Tension Breakaway Nut

#81
20150192016
2015-07-09

TRUSS EYE

#82
20150192013
2015-07-09

TRUSS SYSTEM INSTALLATION

#83
20150117962
2015-04-30

RESIN SYSTEM AND ROCK ANCHOR

#84
20140334885
2014-11-13

Anchor, especially a rock anchor

#85
20140308081
2014-10-16

TENSIONABLE ELONGATED BOLT DISPOSED WITH A SLEEVE AND METHOD OF USE THEREOF

#86
20140270983
2014-09-18

Anchor and anchoring system

#87
20140222770
2014-08-07

De-duplication data bank

#88
20140105690
2014-04-17

Tension cable bolt

#89
20140099167
2014-04-10

Mine roof bolt assembly

#90
20130236251
2013-09-12

Rock bolt sealing system

#91
20130236250
2013-09-12

Fiberglass roof and rib plate

#92
20130209192
2013-08-15

TENSIONABLE THREADED REBAR BOLT

#93
20130202364
2013-08-08

Anchor and method of installing anchor

#94
20130149046
2013-06-13

Apparatus and method for re-tensioning a loose roof plate in an underground mine

#95
20130115013
2013-05-09

Constant-resistance large-deformation anchor rod

#96
20120282039
2012-11-08

Mine roof support apparatus and system

#97
20120251245
2012-10-04

Low Profile Cable Bolt Heads

#98
20120230774
2012-09-13

SLIDING ANCHOR

#99
20120213607
2012-08-23

Anchoring Apparatus and Method of Use

#100
20120163924
2012-06-28

Friction bolt

#101
20120155970
2012-06-21

Mine Roof Bolt With End Fitting

#102
20120114426
2012-05-10

Rock bolt with mechanical anchor

#103
20120112036
2012-05-10

BWR jet pump inlet-mixer main wedge with inserts

#104
20120070234
2012-03-22

Rock Bolt

#105
20120039672
2012-02-16

Fully grouted cable bolt

#106
20120034035
2012-02-09

Tensionable cable bolt with crimped shaft

#107
20110311319
2011-12-22

LOW PROFILE CABLE BOLT HEADERS

#108
20110274504
2011-11-10

FIXATION BAIL

#109
20110268526
2011-11-03

Injection Molded Torque Nut with Internal Recession

#110
20110250022
2011-10-13

Roof bolt anchor with camming element

#111
20110229273
2011-09-22

Bolt anchor

#112
20110142549
2011-06-16

Re-tensionable cable bolt apparatus and related method

#113
20110142548
2011-06-16

End coupling for a rock bolt

#114
20110135402
2011-06-09

Rock anchor cable

#115
20110052343
2011-03-03

FASTENING ELEMENT AND METHOD FOR PRODUCING A FASTENING ELEMENT

#116
20110002745
2011-01-06

Sliding anchor

#117
20100278593
2010-11-04

Expansion shell assembly

#118
20100266345
2010-10-21

ENGAGEMENT HEAD FOR TENSIONING ASSEMBLY

#119
20100221072
2010-09-02

Bolt anchor

#120
20100202838
2010-08-12

Rock bolt

#121
20100189515
2010-07-29

TENSONING DEVICE

#122
20100021245
2010-01-28

Deformable rock bolt

#123
20100014923
2010-01-21

Method of setting a self-drilling, chemically anchorable fastening element and a self-drilling chemically anchorable fastening element

#124
20090317197
2009-12-24

Tension assembly

#125
20090269159
2009-10-29

Sliding anchor

#126
20090245944
2009-10-01

Low profile mine roof support

#127
20090191007
2009-07-30

Resin Mixing and Cable Tensioning Device and Assembly for Cable Bolts

#128
20090191006
2009-07-30

Resin Mixing and Cable Tensioning Device and Assembly for Cable Bolts

#129
20090191005
2009-07-30

Ground anchor or rock anchor with an anchor tension member comprised of one or more individual elements with corrosion-protected anchor head design

#130
20090180841
2009-07-16

Low profile mine roof support

#131
20090133933
2009-05-28

Method and device for drilling, particularly percussion or rotary percussion drilling, a hole in soil or rock material

#132
20090074517
2009-03-19

End coupling for a rock bolt

#133
20090067932
2009-03-12

Re-tensionable cable bolt apparatus and related method

#134
20090041550
2009-02-12

Expansion bail anchor and method

#135
20080247839
2008-10-09

Tensionable Cable Bolt Apparatus and System

#136
20080247828
2008-10-09

Cable bolt

#137
20080179575
2008-07-31

Tensioning assembly for a cable bolt

#138
20080038068
2008-02-14

Rock bolt

#139
20070292231
2007-12-20

Plastic rock-bolt or dowel

#140
20070269274
2007-11-22

Rock Bolt

#141
20070217869
2007-09-20

Rock bolt

#142
20070012482
2007-01-18

Method and device for producing pretensioned anchorings

#143
20060083593
2006-04-20

Wedge barrel for a twin cable mine roof bolt

#144
20060078391
2006-04-13

Point anchor coated mine roof bolt

#145
20060072972
2006-04-06

Elongate element tensioning member

#146
20060067795
2006-03-30

Elongate element tensioning member

#147
20060018721
2006-01-26

Mine roof bolt anchoring system and method

#148
20060013657
2006-01-19

Rock bolt anchor having concurrent chemical and mechanical anchoring means and method for using the same

#149
20050158127
2005-07-21

Yielding strata bolt

#150
20050123361
2005-06-09

Method and apparatus for anchoring a mine roof bolt

#151
20050123360
2005-06-09

Apparatus for ground support

#152
20050053428
2005-03-10

Rock stabilizer

#153
20050042037
2005-02-24

Yielding rock bolt

#154
16601546
2020-12-15

Asymmetric coordinated support device for gob side entry based on combination of flexibility and rigidity