| Patents for E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection (4,377) |
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| 12/01/2010 | CN201661305U Friction type anchor rod capable of being recovered |
| 12/01/2010 | CN201661304U Recoverable end support type anchor rod |
| 12/01/2010 | CN1804374B Method for preventing and controlling impact geopressure in longwall face gate of coal mine |
| 12/01/2010 | CN101899988A Expanded anchor rod |
| 11/26/2010 | CA2703427A1 Fastening element for use in mining and tunnel construction |
| 11/25/2010 | DE10106695B4 Bohrkrone für einen Bohr- oder Injektionsanker Drill bit for drilling or injection anchor |
| 11/24/2010 | CN201650323U Grouting anchor rope |
| 11/24/2010 | CN201650322U Safety protection device for ends of exposed rod |
| 11/24/2010 | CN201650321U Detachable anchorage device |
| 11/24/2010 | CN201649081U Novel pressure-dispersed anchoring device |
| 11/24/2010 | CN101892855A Glass fiber reinforced plastics anchor rod with high bearing capacity for metal mines |
| 11/24/2010 | CN101892854A Mining movable hoisting ring |
| 11/24/2010 | CN101892852A Self-anchored emergency anchor rod and installation method thereof |
| 11/24/2010 | CN101033692B Coal mine down-hole support parts |
| 11/18/2010 | US20100290841 Method for fixing a cable or tendon |
| 11/18/2010 | US20100290840 Plastic rock-bolt or dowel and method of manufacturing of the same |
| 11/17/2010 | CN201635754U Force measurement anchor device for analog simulation experiment |
| 11/17/2010 | CN201635753U Special device for supporting mine rock |
| 11/17/2010 | CN201635752U Full-thread anchor rod steel for roadway support |
| 11/17/2010 | CN201635751U Resin anchor bar |
| 11/17/2010 | CN101886546A Method for inhibiting roof deformation of coal mine underground bolt and anchor cable roadway |
| 11/11/2010 | DE112008002251T5 Gesteinsbolzen mit mechanischem Anker The rock bolt with mechanical anchors |
| 11/10/2010 | EP2248951A1 Method and device for determining the axial force progression in a pressure-grouted anchor |
| 11/10/2010 | EP2247827A1 Improved sliding anchor |
| 11/10/2010 | CN101881175A Anchor cable for cage-shaped mine and preparation method thereof |
| 11/08/2010 | CA2703432A1 Self-drilling fastening element |
| 11/04/2010 | US20100278593 Expansion shell assembly |
| 11/03/2010 | CN201620902U Plastic expansion-shell-type air bag anchor bolt |
| 11/02/2010 | CA2553344C Rockbolts made of high-strength steel pipes and method of manufacturing thereof |
| 10/27/2010 | CN201614943U 可拆式组合锚索索具 Soso combination with detachable anchor |
| 10/27/2010 | CN101871353A Method for soft rock roadway grouting and full-length prestress baseboard anchor cable comprehensive support |
| 10/26/2010 | CA2494781C Rock bolt post grouting apparatus |
| 10/26/2010 | CA2456583C A grouted friction stabiliser |
| 10/26/2010 | CA2405799C Rock bolt and method of manufacture and installation |
| 10/22/2010 | CA2701265A1 Double collar wedge anchor |
| 10/21/2010 | WO2010118462A1 A friction stabiliser |
| 10/21/2010 | WO2010090500A3 Expandable rock bolt tube |
| 10/21/2010 | US20100266345 Engagement head for tensioning assembly |
| 10/21/2010 | DE102006011652B4 Zweischritt-Hohlstabverbundanker für Kleberpatronen und Klebergranulat Two-step composite hollow rod anchor for glue cartridges and glue pellets |
| 10/21/2010 | CA2796385A1 A friction stabiliser |
| 10/19/2010 | CA2353728C Wedge anchor for concrete |
| 10/14/2010 | US20100260557 rock anchor |
| 10/13/2010 | EP2238313A1 Anchor tube and method for production thereof |
| 10/13/2010 | CN201606095U 锚杆 Bolt |
| 10/13/2010 | CN201606094U 一种锚杆 One kind of anchor |
| 10/13/2010 | CN201606093U 膨胀式可回收锚杆 Expansion recoverable bolt |
| 10/13/2010 | CN201606086U 基于架后充填的松软易冒特厚煤层巷道支护装置 Based on the rear frame filling soft and easy to take special thick seam roadway devices |
| 10/13/2010 | CN101858225A Constant resistance and large deformation anchor rod |
| 10/13/2010 | CN101487257B Porthole connection section of combined anchor bar and its manufacturing process |
| 10/13/2010 | CN101250875B Pawl type self-locking anchor rod |
| 10/07/2010 | US20100252953 Coated mining bolt |
| 10/07/2010 | DE102009016153A1 Lining for constructing e.g. tunnel, has anchor secured in mountain, sealing foil arranged at tunnel outbreak, and outer side fastener comprising nozzle, where clamping connection is provided between nozzle and anchor end |
| 10/06/2010 | CN201599046U 拉力锚杆 Tension bolt |
| 10/06/2010 | CN101852083A Quick supporting method for large-deformation roadway easy to fall, break and loosen and apparatus thereof |
| 09/30/2010 | US20100247248 Retaining wall soil reinforcing connector and method |
| 09/29/2010 | EP2233683A2 Adapter of a self-drilling chemically anchored attachment element |
| 09/29/2010 | EP2232014A1 Self drilling rock bolting |
| 09/29/2010 | CN101849084A Powder-actuated mechanical lock concrete anchor |
| 09/29/2010 | CN101845959A Anchor rod |
| 09/24/2010 | CA2697581A1 Method for anchoring a fastening element in a mineral component, and fastening element for mineral components |
| 09/22/2010 | CN201588643U Multi-corrosion resistant anchor rod |
| 09/22/2010 | CN201588642U Two sides supporting device for coal mine tunnel throat |
| 09/22/2010 | CN101839143A Anchor rod |
| 09/16/2010 | WO2010104460A1 Friction bolt |
| 09/16/2010 | CA2754710A1 Friction bolt |
| 09/15/2010 | CN201581911U Double-anchoring anchor rod |
| 09/14/2010 | US7794181 Mine roof and rib support device |
| 09/14/2010 | US7794179 Rockbolt of high strength steel pipe and method of manufacturing the same |
| 09/11/2010 | CA2696292A1 Adapter for a self-drilling, chemically anchorable fastening element |
| 09/08/2010 | CN201575025U Shearing-type damping torque nut used for anchor rod of mine |
| 09/08/2010 | CN101824996A Expansion shell type anchoring head and anchor rod with the same |
| 09/07/2010 | US7789589 Fastening element |
| 09/07/2010 | CA2339447C Fastening element |
| 09/02/2010 | US20100221072 Bolt anchor |
| 09/02/2010 | US20100221071 Remotely controlled mining machines, control systems, and related methods |
| 09/01/2010 | CN101492917B Hollow anchor stock circulating pressure slip casting construction method and special slip casting system thereof |
| 09/01/2010 | CN101457651B Filling stack advanced support method along empty tunnel in coal-gas co-milling Y-shaped ventilating system |
| 08/25/2010 | CN201560784U Novel thick tail full thread glass steel anchor rod and accessory |
| 08/25/2010 | CN201560783U Anchor rod laneway forepoling support device |
| 08/25/2010 | CN201560782U Recyclable anchor housing |
| 08/25/2010 | CN201560781U Gob-side entry retaining roadway support device for half coal rock |
| 08/25/2010 | CN201560780U Ultra-small clear distance tunnel rock pillar pre-stress opposite-pull anchor rod structure |
| 08/25/2010 | CN101086159B Annular extension limit flexible pressurized grouting bolt |
| 08/24/2010 | US7780377 Friction stabilizers and roof bolt head markings |
| 08/18/2010 | CN201554480U Yielding device used in anchoring |
| 08/18/2010 | CN201554479U Mining anchor rod |
| 08/18/2010 | CN201554478U Connection locker of truss anchor wire |
| 08/18/2010 | CN101806217A Tunneling method for three-line parallel small-distance shallow-buried and unsymmetrical-pressure tunnel groups |
| 08/18/2010 | CN101078212B Anchorage and removing method thereof |
| 08/12/2010 | WO2010090500A2 Expandable rock bolt tube |
| 08/12/2010 | US20100202838 Rock bolt |
| 08/11/2010 | CN201546738U Deep coal mine well skip loading chamber support |
| 08/11/2010 | CN1788140B Expandable rock bolt and rock bolting system |
| 08/05/2010 | US20100196102 Anchor system |
| 08/04/2010 | CN201539271U Sealing sleeve for grouting anchor |
| 08/04/2010 | CN201539270U Novel prestressed supporting device |
| 07/29/2010 | WO2010085484A1 Anchoring systems and methods of use thereof |
| 07/29/2010 | US20100189515 tensoning device |
| 07/29/2010 | CA2746545A1 Anchoring systems and methods of use thereof |
| 07/28/2010 | CN1932240B Full-seam cutting, retreating, separate moving and full-caving comprehensive mechanized coal mining method |