| Patents for E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection (4,377) |
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| 06/21/2012 | WO2012029012A3 A bearing plate assembly for a rock anchor |
| 06/21/2012 | US20120155970 Mine Roof Bolt With End Fitting |
| 06/21/2012 | US20120155969 Anchor Module and a Method for Producing an Anchor Module |
| 06/20/2012 | CN202280469U 一种矿用锚索锚具 Ore cable anchor |
| 06/20/2012 | CN202280468U 一种焊接式动静组合锚杆 A welding-type movement combination anchor |
| 06/20/2012 | CN202280467U 中空注浆锚杆 Hollow grouting anchor |
| 06/20/2012 | CN202280466U 煤矿用锚杆托盘 Mine bolt tray |
| 06/20/2012 | CN102505950A Construction method for recycling self-feeding anchor rods and anchor rod structural components thereof |
| 06/20/2012 | CN102505687A Pre-explosion drilling, grouting and anchoring integrated anchor rod and construction method thereof |
| 06/20/2012 | CN102002947B Explosion expanded internal anchor head prestressed anchor cable for strengthening weak rock and anchoring method thereof |
| 06/15/2012 | CA2760164A1 Rock bolt |
| 06/13/2012 | CN202273695U 一种热轧细牙螺纹钢式锚杆 A hot rolled steel fine-tooth type anchor |
| 06/13/2012 | CN202273230U 一种非冷加工联接用钢 A non-cold steel coupling |
| 06/13/2012 | CN102493825A Method for supporting coal seam roadway with anchor wires |
| 06/13/2012 | CN102493450A Glass fiber reinforced plastic engineering anchor rod and manufacturing method thereof |
| 06/12/2012 | US8197160 Mine roof and rib support with reinforced channel |
| 06/07/2012 | WO2012071625A1 A nut assembly |
| 06/06/2012 | DE102010061006A1 Kupplung, insbesondere für das Verbinden von Ankerstangen Coupling, in particular for the connection of the anchor rods |
| 06/06/2012 | CN202266284U 一种水泥卷锚杆 A cement volumes Bolt |
| 06/06/2012 | CN202266281U 一种掘进工作面锚杆支护、锚网喷支护用前探梁悬挂装置 A Heading Face bolting, anchoring the net shotcrete support beam suspension with probe |
| 06/06/2012 | CN202263867U 矿用锚索锚固端成型机 Mine anchorage client machine |
| 05/31/2012 | WO2011079829A3 Expansion rock anchor |
| 05/30/2012 | CN202250201U Device for comprehensive prevention of coal mining face ''one ventilation and three prevention'' accidents |
| 05/30/2012 | CN202250200U 'Ventilation, dust, gas and fire prevention' accident equipment capable of providing comprehensive precaution for stope face |
| 05/30/2012 | CN202250196U 'Ventilation, dust, gas and fire prevention' accident equipment capable of providing comprehensive precaution for stope face |
| 05/30/2012 | CN202250195U Comprehensive 'one-ventilation and three-prevention' accident preventing device of coal face |
| 05/30/2012 | CN202250189U One-ventilation and three-prevention equipment for comprehensively preventing accidents on heading face |
| 05/30/2012 | CN202250187U Equipment for comprehensively preventing 'one-ventilation and three-prevention' accidents of working faces |
| 05/30/2012 | CN202250185U Comprehensive prevention equipment for one-ventilation and three-prevention accidents in stope face |
| 05/30/2012 | CN202250181U Equipment for comprehensive prevention of one-ventilation and three-prevention accidents of stope |
| 05/30/2012 | CN202250128U Tray for glass reinforced plastic anchor rod |
| 05/30/2012 | CN202250127U Novel wedge seam type anchor structure |
| 05/30/2012 | CN202250126U Opposite pulling anchor rod device for limiting lateral deformation of masonry wall body |
| 05/30/2012 | CN202250125U Novel mine anchor rod-and-lace combined support device |
| 05/29/2012 | CA2623698C Method and system for mining hydrocarbon-containing materials |
| 05/23/2012 | EP2455582A2 Anchor component, in particular for mining and tunnel construction |
| 05/23/2012 | CN202228124U 'One ventilation and three preventions' equipment for comprehensively preventing accidents on working face |
| 05/23/2012 | CN202228117U 'Ventilation, dust, gas and fire prevention' accident equipment capable of providing comprehensive precaution for stope face |
| 05/23/2012 | CN202228097U Safety reflecting mirror for rear end of anchor rod |
| 05/23/2012 | CN202228096U Conical-blocking type friction sleeve large-deformation anchor rod |
| 05/23/2012 | CN202228094U Anchor mesh support used for underground roadway |
| 05/23/2012 | CN202227340U Device capable of being arranged on anchor rod anchoring section and/or rod body of free section and anchor rod |
| 05/23/2012 | CN1837503B Shell-reclaimable rock-reinforcing construction method and shelling type reinforcement body and reclaiming apparatus used thereby |
| 05/23/2012 | CN102472103A Tensionable tubular resin anchored tubular bolt and method |
| 05/23/2012 | CN102465706A 倾斜层状岩体的沿脉采准巷道的开凿方法 Tilt layered rock along veins of Mining Roadway excavation methods |
| 05/23/2012 | CN101906977B Method for preventing and treating large deformation and collapse of softrock tunnel |
| 05/23/2012 | CN101749033B Reinforcement technology of reinforced concrete tunnel lining steel plate |
| 05/23/2012 | CN101737070B Anchor rod for measuring tunnel floor heave large deformation and method therefor |
| 05/16/2012 | EP2453103A2 Anchor component and method for manufacturing same |
| 05/16/2012 | DE102010043769A1 Ankerbaugruppe, insbesondere für den Berg- und Tunnelbau Armature assembly, particularly for mining and tunneling |
| 05/16/2012 | DE102010043765A1 Ankerbaugruppe sowie Verfahren zur Herstellung einer Ankerbaugruppe Armature assembly and methods for producing an armature assembly |
| 05/16/2012 | CN202220613U Operating platform for anchor rope and anchor bolt support of coal mine roadway |
| 05/15/2012 | CA2564941C Rockbolt made of steel pipe |
| 05/15/2012 | CA2481311C Drilling and bolting head for bolting machine |
| 05/10/2012 | WO2012061842A2 Anchoring systems for mines |
| 05/10/2012 | US20120114426 Rock bolt with mechanical anchor |
| 05/10/2012 | CA2822568A1 Anchoring systems for mines |
| 05/09/2012 | CN202215285U Equipment for comprehensively preventing tunneling face from accidents related to 'ventilation and prevention of fire, gas and dust' |
| 05/09/2012 | CN202215249U Layering pack wall along for hollow entry retaining in solid filling coal mining |
| 05/09/2012 | CN102444407A Construction deformation control method for lower step of high crustal stress weak surrounding rock tunnel |
| 05/08/2012 | US8172485 End coupling for a rock bolt |
| 05/08/2012 | US8172484 Fiber reinforced plastic drilling anchor |
| 05/03/2012 | WO2012058341A1 Filling of partitioned film packages for anchoring systems for mines |
| 05/03/2012 | WO2011035353A3 Friction bolt |
| 05/02/2012 | CN202208921U Presstressed high-strength anti-loosening coarse thread anchor sleeve |
| 05/02/2012 | CN102434180A Continuous resistance-increasing deforming anchor rod |
| 05/02/2012 | CN102434179A Deformation anchor cable capable of increasing resistance continuously |
| 05/02/2012 | CN102434154A Development machine-mounted anchor rod drilling rig |
| 04/26/2012 | WO2012053965A1 Rock bolt hanger system |
| 04/25/2012 | CN202202880U 一种实心螺旋式可回收锚杆 One kind of solid spiral recoverable bolt |
| 04/25/2012 | CN102425439A 预置钢绞线双向分阶段张拉的锚索加固方法 Two-way pre-staged tensioning strand anchor reinforcement method |
| 04/25/2012 | CN102425438A 极近距离煤层群多采空区下巷道的支护方法 More mining group Seams empty area under the roadway support method |
| 04/25/2012 | CN102425437A 石炭系煤层开采顺槽巷道支护方法 Carboniferous coal roadway method Crossheading |
| 04/25/2012 | CN102425428A 巷道迎头极破碎顶板控制方法 Roadway head pole broken roof control method |
| 04/25/2012 | CN102425417A 易冒顶板锚索毛石墙联合沿空留巷方法 Easy roof fall plate anchor stone wool combined method for Gob |
| 04/24/2012 | US8162569 High-strength anchor system, safe room bulkhead, and method of anchoring a support to mine strata |
| 04/18/2012 | CN102418539A 软岩煤巷快速过构造掘进中的支护工艺 Soft Coal Roadway Driving fast over construction of Support Technology |
| 04/18/2012 | CN101713290B 煤矿深部全煤巷道冲击地压解危方法 Coal mine roadway in deep full method of bumping Jie Wei |
| 04/17/2012 | US8157482 Anchor system |
| 04/11/2012 | EP2438270A2 Anchoring bolt having an extruding piston |
| 04/11/2012 | CN202187288U 隧道式复合锚碇 Compound Tunnel Anchorage |
| 04/11/2012 | CN102414396A 摩擦锚杆 Friction Bolt |
| 04/11/2012 | CN102410033A 一种锚杆拔取装置 One kind of bolt extractor device |
| 04/05/2012 | WO2012021588A3 Fully grouted cable bolt |
| 04/05/2012 | US20120082515 Roof and Rib Support Having Reverse C-Channel |
| 04/04/2012 | EP2147185B1 Pipe coupling |
| 04/04/2012 | EP1934404B1 Friction bolt and expansion adaptor for said anchor |
| 04/04/2012 | CN202182097U 一种高可靠性的锚杆螺母 A highly reliable bolt nut |
| 04/04/2012 | CN202181925U 矿井上开式全自动灾害堵防装置 Open automatic blocking mine disaster prevention device on |
| 04/04/2012 | CN202181924U 矿井对开式全自动灾害堵防装置 Automatic blocking off mine disaster prevention device |
| 04/04/2012 | CN202181923U 矿井加强式全自动灾害堵防装置 Automatic mine disaster strengthen anti-blocking device |
| 04/04/2012 | CN202181909U 一种用于锚喷支护巷道施工的锚杆螺栓保护装置 Anchor bolt protection device for shotcrete support for roadway construction |
| 04/04/2012 | CN102405329A 摩擦锚杆 Friction Bolt |
| 04/04/2012 | CN102400699A 竹节式高强锚杆 Bamboo-type high-strength bolt |
| 03/28/2012 | CN202176350U 用于地下工程模型试验支护的砂浆锚杆 Mortar anchor used in underground engineering model test SUPPORT |
| 03/28/2012 | CN202176349U 自攻锚固锚杆 Self-tapping anchor bolt |
| 03/28/2012 | CN102392667A Fast installation method of ten-million-ton scale fully mechanized caving face equipment |
| 03/28/2012 | CN102392662A Bent dynamic and static combined anchor rod |
| 03/28/2012 | CN102392651A Completely weathered granite tunnel excavation construction method |
| 03/28/2012 | CN102392457A Friction type resin anchor rod and installation method thereof |