| Patents for E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection (4,377) |
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| 12/07/2011 | CN202065001U 矿井绞车巷道全自动灾害堵防装置 Winch mine roadway blocking automatic disaster prevention device |
| 12/07/2011 | CN202064984U 一种锚杆钢筋应力计连接头 One kind of stress meter steel bolt connector |
| 12/07/2011 | CN202064983U 一种架棚支护巷道底板控制装置 One kind of frame shed supported roadway floor control device |
| 12/07/2011 | CN202064982U 一种巷道支护用让压钢绞线 One kind of roadway with the presser Strand |
| 12/07/2011 | CN202064981U 软煤层巷道支护结构 Soft coal roadway structure |
| 12/07/2011 | CN202064980U 让压型异型梁锚索桁架巷道支护系统 Let the pressure-type anchor shaped girder truss roadway system |
| 12/07/2011 | CN202064979U 半刚性异型梁锚索桁架巷道支护系统 Semi-rigid anchor shaped truss girder roadway system |
| 12/07/2011 | CN102269002A 一种实心螺旋式可回收锚杆 One kind of solid spiral recoverable bolt |
| 12/07/2011 | CN102269001A 锚杆防崩安全卡圈 Anti Bolt collapse safety collar |
| 12/07/2011 | CN102268998A 大跨度切眼双微拱减跨支护方法 Cut large span arched double cut across support method |
| 12/07/2011 | CN101493011B 一种软弱膨胀型围岩巷道支护方法 A sign of weakness intumescent surrounding rock roadway method |
| 12/01/2011 | WO2011149420A1 Rock bolt embedded in grout |
| 11/30/2011 | CN202055842U 一种隧道钢拱架与锁脚锚管连接方式 A tunneling foot steel arch and lock anchor pipe connection |
| 11/30/2011 | CN102261069A 可回收的锚杆施工方法及其所用的空腔杆体、高压加热器 Bolt construction methods and materials used recyclable cavity rod, high-pressure heater |
| 11/29/2011 | CA2510178C A yielding rock bolt |
| 11/24/2011 | DE102008018587B4 Vorrichtung zum Herstellen von Befestigungsankern Apparatus for producing wall anchors |
| 11/22/2011 | US8061935 Rock bolt and an anchoring device |
| 11/16/2011 | EP2238313B1 Anchor tube and method for production thereof |
| 11/16/2011 | CN202039880U Mine heading face water stop type anchor rod |
| 11/16/2011 | CN202039879U Combined type mortar bolt sealing locating plug |
| 11/16/2011 | CN202039878U Steel bar mesh shell bracket for underground roadway |
| 11/15/2011 | US8057128 Truss shoe with wedge retaining sleeve and method of assembling same |
| 11/09/2011 | EP2384391A1 Yielding bolt and assembly |
| 11/09/2011 | CN202031617U Backing (supporting) plate device for hub-type anchor rod |
| 11/09/2011 | CN102239310A Rock bolt component |
| 11/09/2011 | CN102235151A Advanced hole-forming method of sand gravel boulder layer |
| 11/09/2011 | CN102233669A FRP (fiber reinforced plastic) rib preparation method and FRP rib prepared thereby |
| 11/09/2011 | CN101892852B Self-anchored emergency anchor rod and installation method thereof |
| 11/03/2011 | WO2011135597A1 Reinforcing element for consolidating an excavation wall |
| 11/02/2011 | CN202023572U Mining anchor rod |
| 10/27/2011 | WO2011054020A3 Method for the drilling, in particular percussion or rotary percussion drilling, of holes in soil or rock material and device therefor |
| 10/26/2011 | EP2379843A1 Sleeved cable bolt |
| 10/26/2011 | CN202017506U Supporting device for pressure transfer of underground roadway |
| 10/26/2011 | CN202017505U Pipe roof supporting device |
| 10/26/2011 | CN102226408A Loess tunnel anchor bar support device |
| 10/26/2011 | CN102226407A Four-line large-span tunnel cable-arch combined primary support structure |
| 10/26/2011 | CN102226406A Construction method of super-long advanced anchor bars |
| 10/26/2011 | CN102226405A Method for reinforcing working surface of loose and soft coal bed by utilizing nonmetal grouting anchor cable |
| 10/19/2011 | CN102220872A Highly-durable FRP (Fiber Reinforced Plastic)-reinforcing steel bar anchor rod used in underwater rock soil anchoring engineering |
| 10/19/2011 | CN101705831B Construction method for installing support rapidly by using rear chambering self-locking anchor rod |
| 10/13/2011 | US20110250022 Roof bolt anchor with camming element |
| 10/12/2011 | CN202007678U Coal mine tension dispersion anchor rope |
| 10/12/2011 | CN202007677U High-strength deformation-resistant anchor rod angle adjusting pallet |
| 10/12/2011 | CN202007406U Anchor device with adjustable prestress |
| 10/12/2011 | CN202007405U 振动平衡锚固装置 Vibration balance anchoring device |
| 10/12/2011 | CN102213102A Method for righting toppled brackets of large-inclined-angle working surface |
| 10/12/2011 | CN102213099A Composite liner structure of four-track large-span wall-foundation arched tunnel |
| 10/12/2011 | CN101858225B Constant resistance and large deformation anchor rod |
| 10/11/2011 | US8033760 Tension assembly |
| 10/05/2011 | CN202001040U Expansion high-strength anchor rod |
| 10/05/2011 | CN202001039U Modified continuously-threaded resin anchor rod |
| 10/05/2011 | CN202001038U Resin anchor-rod stirrer |
| 10/05/2011 | CN102206404A Coated mining bolt |
| 09/28/2011 | CN201991561U Reinforced coal bunker for coal mining area |
| 09/28/2011 | CN201991541U 无腿拱形棚 Legless arched shed |
| 09/28/2011 | CN201991005U 一种预应力锚索的主动自适应恒阻伸长器 Active adaptive prestressed anchor elongation is constant resistance |
| 09/28/2011 | CN102203382A Rock anchor cable |
| 09/28/2011 | CN102200020A Yielding type special-shaped beam anchor rope truss roadway support system |
| 09/28/2011 | CN102200019A Tunnel boring machine middle-plate stepping reinforcing support mechanism and construction method thereof |
| 09/28/2011 | CN101333813B U-shaped anchorage cable |
| 09/22/2011 | WO2011113131A1 A yielding spiral bolt appendage for a rock bolt |
| 09/22/2011 | US20110229273 Bolt Anchor |
| 09/22/2011 | DE102010023627A1 Selbstbohranker Self-drilling |
| 09/22/2011 | CA2767209A1 A yielding spiral bolt appendage for a rock bolt |
| 09/21/2011 | EP2366869A2 Self-drilling anchor |
| 09/21/2011 | EP2257690B1 Corrosion-protected self-drilling anchor and anchor subunit and method for the production thereof |
| 09/21/2011 | CN201982124U 改进的注浆锚索 Improved grouting anchor |
| 09/21/2011 | CN201982123U 一种煤矿巷道工作面切眼锚网梯加单体支护装置 One kind of mine roadway Face notch anchor ladder plus single support device |
| 09/21/2011 | CN201981537U 水胀式弹性抗岩爆锚杆 Water-expandable elastic anti-rock burst Bolt |
| 09/21/2011 | CN102191940A Water conveyance tunnel with prestressed composite lining for shield tunnelling |
| 09/21/2011 | CN101749034B Shoring method for prolonging service cycle of soft rock laneway |
| 09/15/2011 | DE102009029892A1 Device i.e. anchorage body, for anchorage of wires or cables of network elements in mountainous region, has grouted bodies merged in area and penetrated mutually such that body has cone or truncated pyramid-shape |
| 09/14/2011 | CN201972707U 一种夹心锚筋混凝土沿空隔离墙 One kind of sandwich anchor reinforced concrete wall along empty |
| 09/14/2011 | CN102182510A Unit structure for roof stress monitoring in coal mine |
| 09/14/2011 | CN102182498A Comprehensive laneway-supporting method for cracked area in coal mine |
| 09/14/2011 | CN102182484A Anchor-bamboo combination support method for underground mining |
| 09/14/2011 | CN102182483A Semi-rigid abnormal beam anchor cable truss roadway supporting system |
| 09/14/2011 | CN102182482A Impact-resistant combined anti-pressure supporting system |
| 09/14/2011 | CN102182481A Anchor rope grouting-stop plug |
| 09/14/2011 | CN102182183A Porous anchor device and using method thereof |
| 09/14/2011 | CN101761338B Gob-side entry retaining method of a solid filling coal mining half-section one-leg shed |
| 09/07/2011 | CN201963326U 可重复使用的井下支护锚杆 Underground support reusable anchor |
| 09/07/2011 | CN201963325U 快装塑料胀套式锚杆 Quick plastic expansion sleeve type anchor |
| 09/07/2011 | CN102174812A Active self-adaptative constant-resistance lengthener for prestress anchor cable |
| 09/07/2011 | CN101506467B A tensioning device |
| 09/01/2011 | WO2011103937A2 Reinforcing and/or anchoring screw |
| 08/31/2011 | EP2247827B1 Improved sliding anchor |
| 08/31/2011 | CN201953388U 矿山井巷锚杆支护结构 Mine shaft bolting structure |
| 08/31/2011 | CN201953387U 非扭矩预应力锚杆 Non-prestressed bolt torque |
| 08/31/2011 | CN201953384U 一种对高地应力软岩巷道进行支护的装置 A kind of plateau stress soft rock roadway support device |
| 08/25/2011 | US20110206468 Reinforcement and/or anchor bolt |
| 08/25/2011 | DE102010002214A1 Bewehrungs- und/oder Ankerschraube Reinforcement and / or anchor bolt |
| 08/24/2011 | CN201943725U 一种摩擦套筒式大变形锚杆 A friction sleeve anchor large deformation |
| 08/24/2011 | CN201943724U 锚杆支护用拱形锚梁 Bolting with arched beams anchor |
| 08/24/2011 | CN201943723U 一种锚杆机挂网装置 One kind of hanging device bolting machine |
| 08/17/2011 | CN201934113U 一种矿用锚具让压保护装置 Let Ore anchorage pressure protection device |
| 08/17/2011 | CN201934112U 一种弹柔性锚杆 Flexible anchor of a Missile |
| 08/17/2011 | CN102155249A Method for supporting tunnel roof below mined-out area |
| 08/17/2011 | CN102155248A Method for supporting laneway below coal pillar |
| 08/17/2011 | CN102155247A Pipe shed support device |