| Patents for E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection (4,377) |
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| 08/09/2007 | US20070183850 Cable bolt |
| 08/02/2007 | DE102006000042A1 Adapterteil eines selbstbohrenden Gebirgsankers Adapter part of a self-drilling rock bolt |
| 07/31/2007 | CA2576116A1 Rock bolt with grout flow geometry |
| 07/26/2007 | WO2007082319A1 Fluid recovery |
| 07/26/2007 | US20070172315 Method and Apparatus for Creating Soil or Rock Subsurface Support |
| 07/26/2007 | CA2610221A1 Fluid recovery |
| 07/25/2007 | CN2926510Y Assembled roofbolt of anchor excavator |
| 07/25/2007 | CN2926509Y Roofbolt support |
| 07/25/2007 | CN101004137A Resin anchor bar for measuring force |
| 07/25/2007 | CN101004136A Supporting installation in underground mining of coal mine |
| 07/25/2007 | CN101004135A One-off fastening anchor bar device |
| 07/18/2007 | CN2924015Y Novel special-shaped anchor-red tray for mine |
| 07/18/2007 | CN1326971C Cement dipping liquid in use for anchor pole made from glass fiber reinforced plastic |
| 07/18/2007 | CN100999997A Method for drawing-out near layer gas of top-coal caving face |
| 07/11/2007 | CN2921286Y Disposable drilling rod anchor bolt |
| 07/11/2007 | CN2921285Y Bolt-spary gallery simply, supported ends beam type temporary support apparatus |
| 07/03/2007 | CA2286831C Feeding device for feeding a wire in a rock bolting equipment |
| 06/28/2007 | WO2007070905A2 Heat exchanger |
| 06/21/2007 | WO2006133464A3 Rock bolt and rock bolt shank |
| 06/20/2007 | EP1629178A4 Rockbolt |
| 06/13/2007 | CN2911011Y Prestressed anchor arm device |
| 06/12/2007 | CA2659568A1 Fibre reinforced plastic drilling anchor |
| 06/07/2007 | WO2007062871A1 Corrosion protection for anchors in rock |
| 06/06/2007 | DE102004023668B4 Befestigungselement, insbesondere für den Einsatz im Berg- und/oder Tunnelbau Fastener, especially for use in mining and / or tunneling |
| 06/05/2007 | CA2424787C Anchor |
| 05/31/2007 | WO2007059580A1 Self drilling rock bolt |
| 05/31/2007 | US20070122238 Method and device for installing a self-drilling expandable rock bolt and a self-drilling rock bolt |
| 05/30/2007 | CN2905900Y Self-propelled grouting anchoring-bolt |
| 05/23/2007 | CN2903384Y High pressure slurry filling anchor bolt |
| 05/23/2007 | CN2903383Y Expanding fluid filling tube |
| 05/23/2007 | CN2903382Y Glass fibre reinforced plastic anchor body |
| 05/23/2007 | CN2903381Y Glass fibre reinforced plastic hollow fluid filling anchor barbody |
| 05/23/2007 | CN2903380Y Expand shell type resin anchor |
| 05/23/2007 | CN2903379Y Steel band for coal mine tunnel supporting protecting |
| 05/23/2007 | CN2903375Y Steel reinforced concrete combined support for coalmine tunnel |
| 05/23/2007 | CN2903182Y Self drilling type prestressing anchor |
| 05/23/2007 | CN1966937A Once supporting method for reinforced anchor rod in deep tunnel |
| 05/22/2007 | CA2407330C Drilling apparatus and method for single pass bolting |
| 05/18/2007 | WO2007053893A1 Self drilling rock bolt |
| 05/18/2007 | CA2624690A1 Self drilling rock bolt |
| 05/16/2007 | CN1963152A Steel stand for mine supporting anchor cable and method for processing same |
| 05/16/2007 | CN1963151A Wood anchor rod and its construction process |
| 05/16/2007 | CN1962731A Fibre reinforced resin anchor stock |
| 05/08/2007 | CA2289642C Apparatus for bending and cutting cable in rock bolting equipment |
| 05/03/2007 | WO2007023363A8 An expansible rock bolt |
| 05/03/2007 | US20070098505 Automated, low profile drilling/bolting module with gripper |
| 05/02/2007 | CN2895743Y All-screw thread non-metal composite pipe paste-injecting anchoring rod |
| 05/02/2007 | CN1957159A Rock bolting method and rock bolt |
| 04/19/2007 | US20070086862 Extrusion device |
| 04/18/2007 | EP1774139A1 Arrangement for injecting and affixing a reinforcing or anchoring element in a rock wall |
| 04/18/2007 | CN2890340Y Tubular prestressed grouting anchor |
| 04/18/2007 | CN2890309Y Drilling device with ball-jamming type drill head |
| 04/12/2007 | US20070081864 Rockbolts made of steel pipes |
| 04/04/2007 | CN2886051Y Anchor rod recovery apparatus |
| 03/29/2007 | WO2007006428A3 Construction of superstructures and infrastructures |
| 03/21/2007 | CN1934334A Method and device for producing pre-tensioned anchorings |
| 03/21/2007 | CN1932240A Full-seam cutting, retreating, separate moving and full-caving comprehensive mechanized coal mining method and equipment |
| 03/15/2007 | WO2007030049A1 A one-piece drill bit for single-pass anchor bolting and single pass drilling apparatus |
| 03/15/2007 | WO2007030048A1 A one-piece drill bit for single-pass anchor bolting and single pass drilling apparatus |
| 03/15/2007 | WO2007030047A1 A one-piece drill bit for single-pass anchor bolting and single pass drilling apparatus |
| 03/15/2007 | CA2620473A1 A one-piece drill bit for single-pass anchor bolting and single pass drilling apparatus |
| 03/14/2007 | EP1762699A1 Anchoring rod |
| 03/14/2007 | CN2878511Y Tensile compression combined self-anchored rock anchor rod |
| 03/14/2007 | CN1930362A Single pass drilling apparatus, use a one-piece drill bit, method and rock bolt for single pass rock bolting |
| 03/13/2007 | CA2452271C An improved apparatus for ground support |
| 03/07/2007 | CN1926306A Rockbolts made of high strength steel pipes and method of manufacturing thereof |
| 03/01/2007 | WO2007023363A1 An expansible rock bolt |
| 03/01/2007 | WO2007022613A1 Explosive-loaded ground anchor assembly |
| 02/28/2007 | CN1922386A Coated mining bolt |
| 02/22/2007 | DE102005040737A1 Anti-corrosion protection for rock anchors and fittings exposed to water, e.g. in tunnel building, involves using an epoxy resin-based multilayer coating for natural gas pipelines with an outer layer of thermoplastic material |
| 02/21/2007 | CN2871849Y Lane sharpening stand against side-pressure bottom drum |
| 02/20/2007 | US7179020 Mine roof bolt anchoring system and method |
| 02/15/2007 | US20070036614 Controlled expansion of rock bolt |
| 02/14/2007 | CN2869326Y Dismountable anchorage cable lockset |
| 02/08/2007 | WO2007015614A1 Preceding tension type lock bolt and construction method using the same |
| 02/08/2007 | US20070031196 Anchor device with an elastic expansion sleeve |
| 02/07/2007 | EP1749144A1 Rock bolting method and rock bolt |
| 02/07/2007 | CN1908323A Rotating anchor rod of a rod and construction method thereof |
| 02/07/2007 | CN1908322A Anchor bolt containing framework in grouting and construction method thereof |
| 01/31/2007 | CN2863896Y Anchor cable body and apparatus for twisting the same |
| 01/25/2007 | DE4438997B4 Gebirgsanker Rock bolts |
| 01/24/2007 | CN2861488Y Wave fastener for tunnel top plate |
| 01/18/2007 | US20070012482 Method and device for producing pretensioned anchorings |
| 01/17/2007 | CN2858955Y Slip casting overlength anchor bar |
| 01/17/2007 | CN1898456A Anchor device with an elastic expansion sleeve |
| 01/10/2007 | EP1740871A1 Tube connector and device for production of a tube connector |
| 01/04/2007 | US20070000701 Drill bit, a drill rod and a self drilling roof bolt |
| 01/03/2007 | CN2854088Y High strength recovery mechanical anchored rock |
| 01/03/2007 | CN1888327A Anti-corrosion rockbolt with sack body |
| 12/28/2006 | DE10336040B4 Adapter für einen selbstbohrenden Gebirgsanker Adapter for a self-drilling rock bolts |
| 12/27/2006 | CN1884716A Prestress anchor device |
| 12/24/2006 | CA2550792A1 Device for forming partitioned film packages |
| 12/21/2006 | US20060285928 Expandable rock bolt and rock bolting system |
| 12/20/2006 | EP1222363A4 Apparatus for the manufacture of rock bolts |
| 12/20/2006 | CN2849171Y Anchor rope supporting plate |
| 12/20/2006 | CN1882763A Lock bolt made of steel pipe |
| 12/20/2006 | CN1880725A Sand-filling one-step-forming enlarged anchor pile construction method and device therefor |
| 12/17/2006 | CA2550181A1 Mine roof cable bolt and method |
| 12/16/2006 | CA2550169A1 Bearing plate having tab |
| 12/14/2006 | WO2006133464A2 Rock bolt and rock bolt shank |