| Patents for E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection (4,377) |
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| 07/28/2010 | CN101786577A Dual-machine loading-and-walking type hydraulic numerical control deck erection gantry and control system and control method |
| 07/22/2010 | US20100183379 Anchoring systems and methods of use thereof |
| 07/21/2010 | CN101784753A Hollow rock bolt, self -drilling rock bolt and method of forming a hollow rock bolt |
| 07/21/2010 | CN101784752A Rock bolt with mechanical anchor |
| 07/15/2010 | WO2010078639A1 Yieldable cone bolt and method of manufacturing same |
| 07/14/2010 | CN201526331U Deformed steel bar for full anchoring bolt and full anchoring bolt body |
| 07/08/2010 | DE102006006748B4 Zweischritt-Inliner-Hohlstabvollverbundanker Two step-liner Hollow Bar-composite anchor |
| 07/07/2010 | CN201521310U Plastic steel wire rope anchor rod |
| 07/07/2010 | CN201521305U Reinforcement arch rib structure for timbering weak surrounding rocks |
| 07/07/2010 | CN101768963A Self-locking device and self-locking type pre-stress anchor wire having the same |
| 07/06/2010 | CA2589788C Method for casing drilling, drilling unit and adapter device |
| 07/01/2010 | WO2010074584A1 Improved rock bolt with ploughing anchors |
| 07/01/2010 | WO2010072000A1 Sleeved cable bolt |
| 07/01/2010 | US20100166505 Self-centralizing soil nail and method of creating subsurface support |
| 07/01/2010 | DE10234255B4 Verwendung von Bohr-Injektionsankern als flächentragende Armierung eines Vortriebs-Gewölbeschirmes Use of drilling injection anchors as bearing surface reinforcement of a propulsion vault screen |
| 07/01/2010 | CA2740127A1 Sleeved cable bolt |
| 06/30/2010 | CN101761338A Gob-side entry retaining method of a solid filling coal mining half-section one-leg shed |
| 06/29/2010 | CA2466283C Rock bolt |
| 06/23/2010 | EP2199542A1 Tunnel reinforcement tubular device of non-polluting material |
| 06/23/2010 | EP2198169A2 Self-drilling anchor |
| 06/23/2010 | CN201513188U Recoverable anchor rod |
| 06/23/2010 | CN101749041A Dual-anchoring rod and construction method thereof |
| 06/23/2010 | CN101749034A Shoring method for prolonging service cycle of soft rock laneway |
| 06/23/2010 | CN101749033A Reinforcement technology of reinforced concrete tunnel lining steel plate |
| 06/16/2010 | CN201507319U Safe grouting anchor rod for anchoring and grouting |
| 06/16/2010 | CN201507318U Anchored and grouted anchor cable |
| 06/16/2010 | CN201507317U Anchoring-grouting anchor rope |
| 06/16/2010 | CN101737071A Expanding type recoverable anchor rod |
| 06/16/2010 | CN101737070A Anchor rod for measuring tunnel floor heave large deformation and method therefor |
| 06/16/2010 | CN101737069A Reinforcing rock mass structure |
| 06/16/2010 | CN101737068A Method for substituting reconstructed gangue bearing body for roadway protection coal post |
| 06/15/2010 | US7736738 Coated mining bolt |
| 06/09/2010 | CN201502619U Convex spherical universal pad component |
| 06/09/2010 | CN101725364A Displacement release type anchor head device |
| 06/09/2010 | CN101725358A Excavation construction method of ultra-shallow buried uneven weathered stratum of tunnel |
| 06/02/2010 | CN201496370U Improved anchor rod nut |
| 06/02/2010 | CN201496086U Pipe sleeve type recoverable anchor rod |
| 06/02/2010 | CN201496085U Rear hole expansion self-locking anchor bar capable of being installed rapidly |
| 06/02/2010 | CN201496084U Anchor plate of eccentric bump and eccentric center of gravity |
| 06/02/2010 | CN101720379A A deformable rock bolt |
| 06/02/2010 | CN101435199B Fiber-reinforced plastic anchored net and machining process |
| 06/02/2010 | CN101285385B Undermining method for three-dimensional pipe-curtain |
| 06/02/2010 | CN101178008B Coal mine tunnel broken two sides anchoring support method |
| 06/01/2010 | CA2477346C Rock bolt |
| 05/27/2010 | WO2010060122A1 Rock bolt component |
| 05/26/2010 | CN201486580U Controllable pretightening force pressure relief anchor rope |
| 05/26/2010 | CN201486569U Primary support structure of shallow underpass highway non-uniform strata super-large section tunnel |
| 05/26/2010 | CN101713290A Method for clearing rock burst of full-mine laneway deep in mine |
| 05/25/2010 | US7722295 Expansion shell assembly |
| 05/20/2010 | DE102008043702A1 Befestigungselement für den Einsatz im Berg- und Tunnelbau Fastener for use in mining and tunneling |
| 05/19/2010 | EP2186995A2 Fastening element for use in mining and tunnel construction |
| 05/19/2010 | CN201474712U Torque multiplier of anchor rod |
| 05/19/2010 | CN201474703U Bearing structure of consolidated ring of hydraulic tunnel |
| 05/19/2010 | CN1963152B Steel stand for mine supporting anchor cable and method for processing same |
| 05/19/2010 | CN101711305A Plastic rock-bolt or dowel and method of manufacture of the same |
| 05/18/2010 | US7717650 Roof truss shoe having wedge retention device and method of using the same |
| 05/12/2010 | CN201460933U Steel bar ladder beam of two bars and two beams |
| 05/12/2010 | CN201460932U Telescopic resistance-increasing anchor rod preload stress control device |
| 05/12/2010 | CN201460905U High-speed railway over-sized fracture surface loess tunnel primary supporting structure |
| 05/12/2010 | CN201459720U All-purpose spinning anchor pipe |
| 05/12/2010 | CN101705831A Construction method for installing support rapidly by using rear chambering self-locking anchor rod |
| 05/11/2010 | CA2333177C Rock bolt and method of forming a rock bolt |
| 05/06/2010 | WO2010051566A1 Fixation bail |
| 05/05/2010 | CN201448117U Bolting yield component |
| 05/05/2010 | CN1771380B Expandable injection bolt and grouting method using same |
| 04/28/2010 | CN201443408U Expansion type grouting anchor rod |
| 04/28/2010 | CN201443407U Expansion type anchor rod |
| 04/28/2010 | CN201443396U Excavating, anchoring and supporting all-in-one machine |
| 04/22/2010 | US20100098500 Drilling tool, a self-drilling rock bolt, a drill bit, an anchoring device for a self-drilling rock bolt, a shaft for a drilling tool and an end coupling for a drilling tool |
| 04/21/2010 | CN201439590U High-strength anchor rod |
| 04/21/2010 | CN101126321B Expansion anchor rod |
| 04/20/2010 | CA2473255C Rock bolts with expandable element |
| 04/14/2010 | CN1880725B Sand-filling one-step-forming enlarged anchor pile construction method and device therefor |
| 04/14/2010 | CN101694163A Determination method of deep tunnel roof support forms and support depth |
| 04/07/2010 | EP2171210A1 Method and device for drilling a hole in ground or rock material and forming a brace |
| 04/07/2010 | CN101691843A Rear chambering self-locking anchor rod capable of being quickly assembled |
| 04/07/2010 | CN101691754A Multi-plate body type anchor rod |
| 04/06/2010 | US7690868 Cable coupler having retained wedges |
| 03/30/2010 | CA2449682C Rock bolt and method of use |
| 03/25/2010 | US20100074695 Fluid recovery |
| 03/24/2010 | CN201428468Y Plastic-steel composite tray |
| 03/24/2010 | CN201428135Y Prestress anchor cable landslide prevention structure |
| 03/24/2010 | CN101680297A Mine roof bolt with resin control surface |
| 03/23/2010 | CA2682332C A deformable rock bolt |
| 03/17/2010 | CN101672192A Threaded anchor rod |
| 03/10/2010 | CN201420562Y Retractable anchor rod |
| 03/10/2010 | CN101666237A Sealing sleeve of grouted anchor bar |
| 03/04/2010 | US20100054870 Mine roof and rib support with reinforced channel |
| 03/04/2010 | US20100054866 Method and apparatus for creating soil or rock subsurface support |
| 03/03/2010 | CN201416174Y Orifice connection section for combined anchor rod |
| 02/24/2010 | CN201412175Y Inverted-gun barbed nail hollow grouting anchor bar |
| 02/24/2010 | CN201412174Y Obcuneate anchor rod fastening assembly |
| 02/24/2010 | CN201412165Y Vertical mold device |
| 02/24/2010 | CN201411692Y Polyfunctional anti-corrosion type controllable expansion extrusion soil body anchor rod |
| 02/18/2010 | WO2010019971A1 Rock anchor cable |
| 02/18/2010 | CA2733829A1 Rock anchor cable |
| 02/17/2010 | CN201407061Y Prestress quenched-and-tempered thread steel resin anchor rod |
| 02/16/2010 | CA2421223C Mobile system for manufacturing and installing reinforcing members |
| 02/11/2010 | US20100034596 Anchor and anchor nut thereof |
| 02/10/2010 | CN100588818C Method for installation of medicine volume anchor bar anchorage agent |