| Patents for E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection (4,377) |
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| 04/20/2011 | CN201802431U Screw-like recyclable anchor rod |
| 04/20/2011 | CN201802430U Force-measuring metal net for mines |
| 04/20/2011 | CN201802429U Expanding shell type center hole exhaust and grouting prestressed anchor rod |
| 04/20/2011 | CN201802424U Omega-shaped steel belt |
| 04/19/2011 | US7927044 Tensioning assembly for a cable bolt |
| 04/19/2011 | US7927043 Rockbolts made of steel pipes |
| 04/13/2011 | CN201794599U Anchor rod for reinforcing laneway |
| 04/13/2011 | CN102011602A Disc anchor rod reinforcement technology computing method |
| 04/13/2011 | CN102011601A Rapid anchor cable gun |
| 04/13/2011 | CN101349155B Apparatus for controlling laneway bottom heave |
| 04/13/2011 | CN101117889B Underground tunnel hanging-up assembling supporting construction |
| 04/06/2011 | EP2305895A2 Internal anchorage for a tension member |
| 04/06/2011 | CN201786372U Multifunctional anchor rod capable of injecting gelation sizing agent |
| 04/06/2011 | CN201786371U Mineral mesh reinforcement |
| 04/06/2011 | CN102003195A Recyclable anchor rope lock |
| 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 |
| 04/06/2011 | CN101586466B Pressure type anchor rod |
| 03/31/2011 | DE102010032895A1 Anchoring system for fastening parts at rock, stone and concrete, has anchor rod, cylindrical retaining element provided with transverse break-through, and flexible securing element cooperating with anchor rod and made of plastic i.e. nylon |
| 03/31/2011 | CA2772637A1 Friction bolt |
| 03/30/2011 | CN201778832U Detachable anchor cable lock |
| 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 | US20110070035 Self drilling rock bolting |
| 03/23/2011 | CN201771527U Thread steel type resin anchor metal rod body |
| 03/23/2011 | CN201771526U Coal mine underground support device |
| 03/23/2011 | CN201771525U Waste anchor rod canopy connector |
| 03/23/2011 | CN201771516U Supporting structure of district passing through cavern and underground river for tunnel |
| 03/22/2011 | CA2505824C Frictional mining bolt |
| 03/16/2011 | EP2295719A2 Fixing element and method for manufacturing the same |
| 03/16/2011 | CN201763365U Hollow anchor rod pipe head for large-elevation grouting |
| 03/16/2011 | CN101985882A Construction method of rigid primary support of mould-building concrete of plateau permafrost tunnel |
| 03/10/2011 | WO2011026181A1 Drive assembly |
| 03/10/2011 | WO2011026178A1 Tensioning device |
| 03/10/2011 | DE102009039919A1 Befestigungselement und Verfahren zum Herstellen eines Befestigungselementes Fastening element and method for producing a fastening element |
| 03/09/2011 | CN201756974U Anchor rod tray and anchor rod component |
| 03/03/2011 | US20110052332 Yielding Bolt and Assembly |
| 03/03/2011 | US20110048808 Feed unit |
| 03/03/2011 | CA2714264A1 Fastening element and method for producing a fastening element |
| 03/02/2011 | CN201753610U Connecting anchor bolt |
| 03/02/2011 | CN201753609U Yielding anchor cable device |
| 03/02/2011 | CN201753447U Expansion type anchoring head and anchor rod thereof |
| 03/02/2011 | CN101983277A Tensionable spiral bolt with resin nut and related method |
| 03/02/2011 | CN101982644A Continuously progressive yielding anchor plate |
| 03/01/2011 | US7896581 Re-tensionable cable bolt apparatus and related method |
| 03/01/2011 | US7896580 Self drilling rock bolt |
| 03/01/2011 | US7896579 End coupling for a rock bolt |
| 02/24/2011 | WO2011020696A2 Coupling for connecting anchor rods |
| 02/24/2011 | WO2011020144A1 Rock bolt anchor and nut |
| 02/24/2011 | DE202009013169U1 Verankerungssystem Anchoring system |
| 02/23/2011 | CN201751467U Recyclable prestressed anchor rod |
| 02/22/2011 | US7891911 Friction tube anchor and inflation adapter for the latter |
| 02/16/2011 | CN101975074A Soft rock roadway anchored concrete filled steel tube anti-floor heave device and construction method thereof |
| 02/16/2011 | CN101975073A Retractable concrete arch and anchor rod combined support system and construction method |
| 02/10/2011 | WO2011016826A1 Tensionable tubular resin anchored tubular bolt and method |
| 02/10/2011 | US20110033246 Tensionable tubular resin anchored tubular bolt and method |
| 02/10/2011 | CA2763179A1 Tensionable tubular resin anchored tubular bolt and method |
| 02/09/2011 | CN201738935U Chamber arch jet molding concrete construction structure |
| 02/09/2011 | CN101970798A Improved sliding anchor |
| 02/09/2011 | CN101967984A Deep well tunnel cable anchor rigid-flexible coupling support and surrounding rock overall reinforced support method |
| 02/09/2011 | CN101469541B Recoverable anchor rod |
| 02/08/2011 | CA2432835C Yielding strata bolt |
| 02/03/2011 | US20110027019 Non-tensionable cable bolt apparatus and related method |
| 01/26/2011 | CN201723249U Anchor rope breakage ejection-preventive protection device |
| 01/26/2011 | CN101956561A Expanding grouting bolt |
| 01/19/2011 | CN201714408U Folding outer cover used for anchor rod producing and cooling device |
| 01/19/2011 | CN101949296A Reclaimable screw anchor |
| 01/12/2011 | CN201705372U Nonmetal suspension type temporary support device for drivage |
| 01/12/2011 | CN101943015A Anchor rod for strengthening tunnels |
| 01/12/2011 | CN101943014A Displacement release type anchor head device |
| 01/12/2011 | CN101338679B Deep well great section loose wall rock laneway support method |
| 01/06/2011 | WO2011000024A1 A plug |
| 01/06/2011 | US20110002746 Method of Assessing a Multilayer Strata for Rock Bolt Installation |
| 01/06/2011 | US20110002745 sliding anchor |
| 01/05/2011 | EP1546508B1 Rock bolt post grouting apparatus |
| 01/05/2011 | CN201696070U Anchoring tray nut |
| 01/05/2011 | CN201696069U Device for avoiding wall caving and roof cutting |
| 01/05/2011 | CN201695393U Reinforced steel wire-added glass fiber anchor rod |
| 01/05/2011 | CN101936175A Novel anchor support plate and matched nut device |
| 12/29/2010 | WO2010148421A1 Grout plug |
| 12/29/2010 | CN201686985U Simple anchor rod mortar injection device |
| 12/29/2010 | CN101929347A Coordinated-deformation energy-absorption anchor rod suitable for mining high-stress large-deformation rock mass |
| 12/22/2010 | CN201679511U Glass steel anchor rod, anchor rod component and system for manufacturing glass steel anchor rod |
| 12/22/2010 | CN201679510U Drilling-injecting-anchoring integrated anchor rod |
| 12/22/2010 | CN201676780U Antistatic liquid surface spraying equipment of glass steel anchor rod |
| 12/22/2010 | CN101925721A Anchor tube and method for production thereof |
| 12/22/2010 | CN101922150A Method for manufacturing structure of riveting panel (wall) and device thereof |
| 12/15/2010 | CN101915111A Engagement head for tensioning assembly |
| 12/15/2010 | CN101915105A United method for tunneling super-strong or strong rock burst hole section of TBM construction tunnel |
| 12/15/2010 | CN101389827B Injection bolt with a fixed static mixer and its production method |
| 12/09/2010 | WO2010140006A2 Nchoring bolt having an extruding piston |
| 12/09/2010 | US20100310323 Rock bolt assembly |
| 12/09/2010 | US20100307827 Method and devices for handling rod-like pieces in drilling and bolting |
| 12/09/2010 | DE102010009106A1 Klebanker mit integrierter Klebsäule und im Ankerrohr verschiebbarem Auspresskolben Adhering anchor with integrated Klebsäule and sliding in the anchor pipe extrusion piston |
| 12/08/2010 | EP2257690A1 Corrosion-protected self-drilling anchor and anchor subunit and method for the production thereof |
| 12/08/2010 | CN101906981A Wall caving and crest truncation prevention device |
| 12/08/2010 | CN101906977A Method for preventing and treating large deformation and collapse of softrock tunnel |
| 12/08/2010 | CN101070760B Self-sensing composite fiber anchor-rod and its making method |
| 12/02/2010 | US20100303553 Fastening element for use in mining and tunnel construction |
| 12/01/2010 | EP2256292A2 Fastening element with a base body for use in mining and tunnel construction |