| Patents for E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection (4,377) |
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| 08/15/2012 | CN202381106U Front canopy support device for fully mechanized mining face head-on unsupported area |
| 08/15/2012 | CN102635378A New process for high-strength resin anchor construction |
| 08/15/2012 | CN102635377A Tensile reinforcement concrete spray body supporting method for deep soft roadway |
| 08/15/2012 | CN102108704B Vibration balancing anchor device |
| 08/15/2012 | CN102108703B Adjustable prestressed anchoring device |
| 08/15/2012 | CN101638892B Pressure-yielding anchorage device and reclaimable anchor cable |
| 08/14/2012 | CA2763987A1 Rock bolt |
| 08/08/2012 | CN202370559U Pre-tightening force detection pad for anchor rod |
| 08/08/2012 | CN202370558U High-strength bending-resistant T-shaped steel strip with ribs |
| 08/08/2012 | CN202370557U Disc tray for anchorage supporting system |
| 08/08/2012 | CN202370556U High-strength composite steel strip with tray of anchoring support system |
| 08/08/2012 | CN202370555U Support sleeve for anchor rod production |
| 08/08/2012 | CN202369989U Anchor rod |
| 08/07/2012 | CA2543893C Rock bolt |
| 08/07/2012 | CA2523769C Expandable rock bolt and rock bolting system |
| 08/02/2012 | WO2012061842A3 Anchoring systems for mines |
| 08/02/2012 | DE102011003290A1 Betonschraube und Verfahren zur Verankerung einer Betonschraube in einem Untergrund Concrete screw and method for anchoring a screw in a concrete underground |
| 08/01/2012 | EP2480760A2 Friction bolt |
| 08/01/2012 | CN202360121U Forepoling support of coal roadway tunneling anchor mesh cable support |
| 08/01/2012 | CN202360120U Continuous resistance-increasing deformation anchor rod and continuous resistance-increasing deformation anchor cable |
| 08/01/2012 | CN202359560U Tubular anchor rod with trumpet-shaped bottom end |
| 08/01/2012 | CN202359559U Bead-like tubular anchor rod |
| 08/01/2012 | CN202359557U Pawl type anchor rod |
| 08/01/2012 | CN102619536A Deep coal mine roadway grout body maintenance method |
| 08/01/2012 | CN102619521A Construction method for vertical shaft bedrock section wall structure |
| 07/26/2012 | US20120189391 Method for Anchoring Pin Insertion |
| 07/26/2012 | DE102010023627B4 Selbstbohranker Self-drilling |
| 07/25/2012 | CN202348302U Anchor rod stress measuring device |
| 07/25/2012 | CN202348301U Double-thread glass reinforced plastic anchor rod assembly for mine |
| 07/25/2012 | CN202348300U Mine anchor cable |
| 07/25/2012 | CN202348119U Diamond compact anchor rod drill |
| 07/25/2012 | CN102606195A Equipment for comprehensively preventing 'ventilation, gas outburst prevention, dust prevention and fire prevention' accidents of mining face |
| 07/25/2012 | CN102606193A Equipment for comprehensively preventing 'ventilation, gas outburst prevention, dust prevention and fire prevention' accidents of stope face |
| 07/25/2012 | CN102606192A Equipment for ventilation and prevention of fire, flood and coal and gas outburst for comprehensively preventing accidents of driving face |
| 07/25/2012 | CN102606181A Hyperstatic scour prevention four-dimensional roadway support device and support method thereof |
| 07/25/2012 | CN102606180A Method for supporting lamellar soft rock laneway by wire rope anchors |
| 07/25/2012 | CN102135005B Method for supporting roof of roadway under coal pillar and gob transition section |
| 07/25/2012 | CN102116162B Tension dispersed anchor cable for coal mine and anchoring method thereof |
| 07/25/2012 | CN101975074B Soft rock roadway anchored concrete filled steel tube anti-floor heave device and construction method thereof |
| 07/25/2012 | CN101943014B Displacement release type anchor head device |
| 07/18/2012 | CN202338351U 锚索结构和具有该锚索结构的锚固装置 Anchor structure and anchoring device having the anchor structure |
| 07/18/2012 | CN202338350U 一种新型连续增阻变形锚杆 A new continuous increase in deformation resistance Bolt |
| 07/18/2012 | CN202338349U 竹节式高强锚杆 Bamboo-type high-strength bolt |
| 07/18/2012 | CN202338348U Automatically-controllable mineral anchor cable releasing machine |
| 07/18/2012 | CN202338347U 一种新型锚索 A new anchor |
| 07/18/2012 | CN102597423A Friction bolt |
| 07/18/2012 | CN102587967A Equipment for comprehensively preventing accidents of 'ventilation, dust proofing, gas prevention and fire proofing' of working face |
| 07/18/2012 | CN102587962A Methods for arranging and supporting wall-expanded gas extraction drill sites |
| 07/18/2012 | CN102587944A Soft rock-stratum small-section tunneling advance supporting technology |
| 07/18/2012 | CN102587936A Fully-enclosed integral assembly grid concrete support method |
| 07/18/2012 | CN102587920A Tunnel entrance bias section construction method |
| 07/18/2012 | CN102587366A Self-drilling type spiral anchor rod and construction process using self-drilling type spiral anchor rod for grouting along with drilling, stirring and curing |
| 07/18/2012 | CN102051880B Detachable anchor |
| 07/18/2012 | CN101720379B A deformable rock bolt |
| 07/18/2012 | CA2728807A1 Mine roof anchor assembly |
| 07/11/2012 | CN202325585U 一种适用于端部锚固的锚杆紧固锚头 One for fastening the ends of the anchor bolt anchor head |
| 07/11/2012 | CN202325584U 一种缓冲耗能锚杆托盘 As a buffer energy bolt tray |
| 07/11/2012 | CN202325583U 一种阻尼托盘 A Damped tray |
| 07/11/2012 | CN202325582U Anchor rod tray |
| 07/11/2012 | CN202325581U 一种适合动载的预应力锚杆支护系统 Prestressed bolting a system for dynamic load |
| 07/11/2012 | CN202325580U 一种水力膨胀锚杆锚具 One kind of hydraulic expansion anchor bolt |
| 07/11/2012 | CN202325579U 可缩式锚杆 Retractable type anchor |
| 07/11/2012 | CN202325578U 矿用临时支护环 Mine temporary support ring |
| 07/11/2012 | CN202325577U 一种煤矿巷道支护用组合构件 One kind of mine roadway with a combination of elements |
| 07/11/2012 | CN202325548U Secondary yielding uniform pressure supporting structure of roadway surrounding rock under high ground stress |
| 07/11/2012 | CN102562109A Resistance-increasing yielding high-deformation anchor rod and processing method thereof |
| 07/11/2012 | CN102562108A High-strength and light-duty hollow anchor rod and processing method of hollow anchor rod |
| 07/11/2012 | CN102562107A Anchor component, in particular for mining and tunnel construction |
| 07/11/2012 | CN102562106A Super high coal seam mining method by means of filling long arms at high positions |
| 07/11/2012 | CN102562099A Method for carrying out rapid face excavation construction of loess tunnel by double rows of small conduits |
| 07/11/2012 | CN102562097A Three-dimensional asymmetrical supporting system |
| 07/11/2012 | CN102562093A Full-length anchoring supporting method with intensive resin anchor rod and anchor-shotcrete net |
| 07/10/2012 | US8215875 Bolt anchor |
| 07/10/2012 | CA2763910A1 Instrumented coupler load cell for rock anchors |
| 07/10/2012 | CA2460497C Rebar insertion device |
| 07/07/2012 | CA2763338A1 Fully grouted mine roof bolt with expansion anchor |
| 07/04/2012 | CN202300448U 煤矿支护锚杆和支护锚索用的让压闭锁环 Mine Support anchor bolt and the support ring used to make voltage lockout |
| 07/04/2012 | CN202300444U 煤矿巷道预应力鱼腹钢索组合支护结构 Lenticular combination of prestressed cables mine roadway support structure |
| 07/04/2012 | CN202298619U 易回收锚杆装置 Bolt means easy recovery |
| 07/04/2012 | CN202298617U 一种新型锚杆单元 A new bolt unit |
| 07/04/2012 | CN202298616U 一种编织套管型frp筋 A woven sleeve type frp ribs |
| 07/04/2012 | CN102536283A Retractable constant force yielding anchor bolt for dynamical pressure soft rock lane |
| 07/04/2012 | CN102536282A Method for preventing and controlling bottom heaving disaster of mine stoping tunnel |
| 07/04/2012 | CN102536281A High tensile strength scraper reverse hanging device as well as assembling and processing method thereof |
| 07/04/2012 | CN102536280A Resistance-increasing yielding anchor rod |
| 07/04/2012 | CN102536279A Elastic and flexible anchor rod |
| 07/04/2012 | CN102535458A Reinforced cement-soil anchor bolt and construction method thereof |
| 07/04/2012 | CN101985882B Construction method of rigid primary support of mould-building concrete of plateau permafrost tunnel |
| 07/04/2012 | CN101915105B United method for tunneling super-strong or strong rock burst hole section of TBM construction tunnel |
| 06/28/2012 | WO2012083365A1 Rock bolt |
| 06/28/2012 | WO2012083342A1 Rock bolt |
| 06/28/2012 | US20120163924 Friction bolt |
| 06/28/2012 | DE102011102994A1 Rock anchor i.e. composite anchor for drilling equipment used in tunnel and mining industry, has cartridge including volumes having extrusion pistons such that adhesive is extruded from volumes by extrusion pistons towards static mixer |
| 06/28/2012 | CA2822653A1 Rock bolt |
| 06/28/2012 | CA2822470A1 Rock bolt |
| 06/27/2012 | CN202284476U 一种弯曲式动静组合锚杆 One kind of a combination of curved movement anchor |
| 06/27/2012 | CN102518460A Preserved anchorage method for prevention and control of rockburst |
| 06/27/2012 | CN101392655B Resin plastic combined recoverable anchor rod |
| 06/26/2012 | CA2523296C Method and device for rock bolting |
| 06/21/2012 | WO2012083317A1 Hydraulically expandable rock bolt |