| Patents for E21D 20 - Setting anchoring-bolts (3,685) |
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| 07/06/2011 | CN101749039B Deep well drilling waterpower deslagging device of floor anchor rod hole of tunnel |
| 06/30/2011 | WO2011075810A1 Anchor tendon with selectively deformable portions |
| 06/30/2011 | CA2785245A1 Anchor tendon with selectively deformable portions |
| 06/29/2011 | CN201884038U Resin capsule mounter |
| 06/29/2011 | CN102108868A Balanced excavation method for room and pillar mining method |
| 06/28/2011 | US7967532 Ground anchor or rock anchor with an anchor tension member comprised of one or more individual elements with corrosion-protected anchor head design |
| 06/22/2011 | CN201874595U Water-cleaning type multi-cycle grout injector |
| 06/22/2011 | CN201874594U Lapping-assisting device for continuous-mining roof bolter |
| 06/22/2011 | CN101487272B Method for exerting prestressed anchor rod on model |
| 06/21/2011 | US7963726 Plastic rock-bolt or dowel |
| 06/21/2011 | US7963725 Rock bolt |
| 06/21/2011 | CA2481003C Method of localizing a hole drilled with a rock drilling machine |
| 06/15/2011 | EP2331789A1 An injection, sealing valving and passageway system |
| 06/15/2011 | CN201865680U Double-E shaped steel strip for anchoring |
| 06/15/2011 | CN201865570U Anchor rod gang drill device |
| 06/15/2011 | CN101305161B Self drilling rock bolt |
| 06/09/2011 | US20110131852 Exterior clamp triangular slipbase mounting system for roadway sign posts |
| 06/08/2011 | CN201857984U Fast mounting device for resin anchor rod |
| 06/08/2011 | CN201857983U Metal wire and fiber-reinforced plastic composite anchor rod body |
| 06/01/2011 | DE102009056089A1 Rotatable impact-resistance single phase self drilling mixer anchor and two phase cartridge spiral mixer anchor i.e. hollow bar anchor, has solid rods provided in extruded cartridge pipe at heavy duty anchor for double anchor load |
| 06/01/2011 | CN201851139U Three-horizontal-top-anchor-rod positioner |
| 05/25/2011 | CN102071955A Soft outburst coal seam tunneling reserved coal body reinforcement and outburst-proof method |
| 05/25/2011 | CN101255798B Tunnel inner micro-destabilization slip-casting control method in complex environmental condition |
| 05/19/2011 | WO2011060453A1 Apparatus for tightening or loosening fasteners |
| 05/19/2011 | WO2011057349A1 Cable bolt plug |
| 05/19/2011 | CA2780734A1 Compact selective cutting machine |
| 05/18/2011 | CN201835845U Single cylinder intelligent control jaw clutch |
| 05/18/2011 | CN201835748U Jumbolter with rear-mounted impact mechanism |
| 05/18/2011 | CN201835534U Hydraulic tensioning device for locking prestressing anchor rod with fixed torque |
| 05/18/2011 | CN101151437B Improved resin groutable expansion anchor and method of installing same |
| 05/12/2011 | WO2011054722A1 Torque multiplier |
| 05/12/2011 | WO2010140006A3 Nchoring bolt having an extruding piston |
| 05/11/2011 | CN201826837U Movable double-platform partitioned four-arm drill carriage for construction of hangwall anchor rods and anchor cables |
| 05/11/2011 | CN201826759U Lifting platform for construction vehicle |
| 05/11/2011 | CN101519977B Method for fixing gob-side entry retaining roadside packing body on coal seam with big inclined angle |
| 05/04/2011 | CN102042022A Machine-borne anchor net supporting and fixing device of development machine |
| 04/27/2011 | CN201810333U Drilling, loading and anchoring all-in-one machine for outburst mine and coal roadway |
| 04/27/2011 | CN201810326U Paste-blocking device |
| 04/27/2011 | CN201810318U Pressure detecting device of seriflux in injection hole |
| 04/27/2011 | CN102037213A Automated drilling and bolt setting device comprising separate carriages |
| 04/27/2011 | CN102031982A Tunneling construction Ttechnology for constructing mined tunnelof by adopting composite tooth support through mining method |
| 04/27/2011 | CN102031981A Anchoring method of extensible anchor rod |
| 04/27/2011 | CN102031980A Method for quickly reinforcing coal side by using anchor cable |
| 04/27/2011 | CN102031873A Hydraulic tensioner of fixed-torque locking prestressed anchor |
| 04/27/2011 | CN101614125B Construction method of V-level surrounding rock tunnel |
| 04/27/2011 | CN101260672B Weak surface rock slope grouting method and anchor tube for grouting |
| 04/20/2011 | EP1751397B1 Continuous chamber environment resistant retaining wall block and methods of use thereof |
| 04/20/2011 | CN201801482U Automatic production machine for mining anchoring agent |
| 04/20/2011 | CN102022129A Anchorage length limit device for grouting anchor cable |
| 04/20/2011 | CN101672190B Resin cap suitable for fixing resin anchoring cartridge |
| 04/19/2011 | US7927044 Tensioning assembly for a cable bolt |
| 04/19/2011 | US7927043 Rockbolts made of steel pipes |
| 04/13/2011 | CN201794610U Drilling, loading, anchoring, supporting and transporting integrated machine in high outburst mine coal drift |
| 04/13/2011 | CN201794076U Manual drilling clamp |
| 04/13/2011 | CN102011601A Rapid anchor cable gun |
| 04/06/2011 | EP2305949A2 Grouting apparatus |
| 04/06/2011 | EP2304179A1 Automated drilling and bolt setting device comprising separate carriages |
| 04/06/2011 | EP2304178A1 Rock drilling device |
| 04/06/2011 | EP2304167A1 Feed unit |
| 04/06/2011 | EP2304158A1 Rock drilling device and rock drilling rig and/or rock bolting rig comprising such device |
| 04/06/2011 | CN201788388U Jumbolter capable of monitoring work states of drill holes and monitoring device |
| 04/06/2011 | CN201786372U Multifunctional anchor rod capable of injecting gelation sizing agent |
| 04/06/2011 | CN201786370U Planetary arm power type screwing device for fasteners with screw threads |
| 04/06/2011 | CN201786368U Mining dynamometric reinforcing steel bar joist |
| 04/06/2011 | CN201786367U Mine steel bar joist |
| 04/06/2011 | CN201786256U Abnormal protrusion mine coal road digging anti-protrusion boring jumbo loading set |
| 04/06/2011 | CN102003194A Rapid installation process of resin anchor bar and device thereof |
| 04/06/2011 | CN102003193A Hydraulic airborne water and wind-driven drilling and anchoring device |
| 04/06/2011 | CN102003187A Construction method of under cutting excavation supporting of of deeply buried soft-rock large tunnel |
| 04/06/2011 | CN102002947A Explosion expanded internal anchor head prestressed anchor cable for strengthening weak rock and anchoring method thereof |
| 03/31/2011 | DE102009043792A1 Zweikomponenten-Mörtelmasse und ihre Verwendung Two-component mortar composition and their use |
| 03/30/2011 | CN201778656U Hydraulic drilling machine for tunneller |
| 03/30/2011 | CN101994516A Control system for anchor rod machine and anchor rod machine with same |
| 03/30/2011 | CN101994315A Full-length adhesive prestressed anchor rod and construction method thereof |
| 03/30/2011 | CN101509386B Composite support anchor rod and construction method thereof |
| 03/24/2011 | WO2011032283A1 Seismic tool assembly for use in anchor insertion |
| 03/24/2011 | US20110070034 Corrosion-protected, self-drilling anchor and anchor subunit and method for the production thereof |
| 03/23/2011 | CN201771524U Hydraulic airborne water air drill anchor |
| 03/22/2011 | US7909338 Adapter member of a rock anchor |
| 03/17/2011 | CA2713244A1 Seismic tool assembly for use in anchor insertion |
| 03/16/2011 | CN201763365U Hollow anchor rod pipe head for large-elevation grouting |
| 03/16/2011 | CN101985886A Slurry blocking device |
| 03/10/2011 | WO2011028790A1 Yielding bolt and assembly |
| 03/10/2011 | WO2011026181A1 Drive assembly |
| 03/10/2011 | WO2011026180A1 Dolly |
| 03/10/2011 | WO2011026179A1 Rock bolt drive assembly |
| 03/10/2011 | WO2011026178A1 Tensioning device |
| 03/10/2011 | CA2749598A1 Yielding bolt and assembly |
| 03/09/2011 | CN201756973U Crawler walking anchor conveyor |
| 03/02/2011 | CN101598018B Alpine bolter miner back affiliating travel type breaking and transhipping continuous transporting device |
| 03/01/2011 | US7896581 Re-tensionable cable bolt apparatus and related method |
| 02/24/2011 | WO2011020144A1 Rock bolt anchor and nut |
| 02/23/2011 | CN201751535U Glass fiber plastic anchor bar with a metal sleeve nut |
| 02/17/2011 | US20110036608 Rock drilling device and rock drilling rig and/or rock bolting rig comprising such device |
| 02/17/2011 | DE102010033946A1 Vorrichtung zum Verschluss eines Bohrloches und anschließender Injektion mit Injektionsmaterial Device for closure of a borehole and subsequent injection of injection material |
| 02/17/2011 | DE102009028545A1 Verankerungshülse Anchoring sleeve |
| 02/16/2011 | CN201747261U Long twist drill for construction of anti-floating anchor rod |
| 02/16/2011 | CN101975077A High-outburst coal mine coal roadway drilling-loading-bolting integrated machine |
| 02/16/2011 | CN101975022A Post-positioned jumbolter of impact mechanism |
| 02/16/2011 | CN101302931B Method for extracting rim angle coal and re-extracting after warehouse coal extracting |