| Patents for E21D 20 - Setting anchoring-bolts (3,685) |
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| 01/14/2009 | CN201180497Y Single tube all-directional drilling injection slip casting drilling bit of auxiliary slip casting hole capable of hydraulic controlling open-and-close |
| 01/14/2009 | CN201180496Y Drilling bit for rotating impulse type anchor bar drill rig |
| 01/07/2009 | CN201176876Y Shield tunneling type coal mine gate road dig-anchor machine set |
| 01/07/2009 | CN101338679A Deep well great section loose wall rock laneway support method |
| 12/31/2008 | EP2009228A2 Packer with integral mixer |
| 12/24/2008 | WO2008154683A1 Rock bolt tendon tensioning |
| 12/17/2008 | CN201165874Y Sleeve valve type grouting bidirectional pulp stopping machine |
| 12/11/2008 | US20080304920 Resin Anchor With a Compressible Envelope Containing a Curable Product |
| 12/10/2008 | CN201162537Y Slurry blocking plug |
| 12/10/2008 | CN201162488Y Rockbolt drilling machine |
| 12/10/2008 | CN100441618C Use of ethylenic unsaturated isocyanate derivates for covalent binding of active hydrogene atoms in curable components |
| 11/26/2008 | EP1994259A1 Apparatus and method for securing resin set bolts when performing rock bolting |
| 11/26/2008 | CN201155332Y Dilated rubber hose hole packer |
| 11/25/2008 | CA2458701C Concrete anchor |
| 11/20/2008 | US20080286054 Self-drilling rock anchor |
| 11/20/2008 | US20080283738 Device for Examining Rotor Drilled Holes |
| 11/20/2008 | DE10017763B4 Gebirgsanker Rock bolts |
| 11/20/2008 | DE10017751B4 Gebirgsanker Rock bolts |
| 11/20/2008 | DE10017750B4 Gebirgsanker Rock bolts |
| 11/19/2008 | EP1992782A2 Self-drilling mountain anchor |
| 11/19/2008 | CN201152173Y Outburst-proof diggning anchor machine set |
| 11/19/2008 | CN101307590A Anchorage cable anchoring construction method |
| 11/18/2008 | CA2590589A1 Improved rebar insertion device |
| 11/18/2008 | CA2439237C Universal setting tool for adhesively bonded rebar and threaded rod anchors |
| 11/13/2008 | WO2008134798A1 Energy absorbing rock bolt accessory, rock bolt assembly, and method of installing a rock bolt |
| 11/12/2008 | CN101305161A Self drilling rock bolt |
| 11/12/2008 | CN101302936A Blast mining face self-breast wall apparatus |
| 11/12/2008 | CN101302933A Method for developing rock lane comprehensive mechanization developing operation |
| 11/12/2008 | CN101302931A Method for extracting rim angle coal and re-extracting after warehouse coal extracting |
| 11/05/2008 | EP1987230A1 Injection bolt with a fixed static mixer |
| 11/04/2008 | US7445406 Rock bolt |
| 10/30/2008 | WO2008128301A1 Reinforcing of formations |
| 10/30/2008 | WO2008128268A1 Device for producing a drill hole in rock material |
| 10/29/2008 | CN201141464Y Novel gas leg group valve |
| 10/28/2008 | US7441471 Ground anchor load testing system and method |
| 10/23/2008 | WO2008124885A1 Plastic rock-bolt or dowel and method of manufacture of the same |
| 10/23/2008 | US20080260471 Mine roof bolt with resin control surface |
| 10/22/2008 | CN101289857A Sublevel grouting process for prestressed anchor rod and grouting device thereof |
| 10/21/2008 | US7438141 Automated, low profile drilling/bolting module with carousel |
| 10/16/2008 | WO2008122086A1 Extendable member |
| 10/16/2008 | DE102007014905A1 Doppelankersystem, als Zweiphasen- Patronen- Mischanker, mit Hohl- und Vollstabprofil Double anchor system, as two-phase mixing cartridge anchor, with hollow and solid rod profile |
| 10/15/2008 | CN201133248Y Orifice sealed double tube back type grouting device |
| 10/15/2008 | CN201133247Y Tunnelling machine mounted double arm geophysical drilling machine |
| 10/15/2008 | CN101285392A Anchor rod prestress controlled self-locking lockset |
| 10/09/2008 | US20080247828 Cable Bolt |
| 10/08/2008 | CN201129184Y Tubule external valve one-way type subsection back grouting apparatus |
| 10/08/2008 | CN201129183Y Tubule subsection repeat grouting apparatus |
| 10/08/2008 | CN201129178Y Drilling subsection advanced type grouting water-shutoff apparatus |
| 10/08/2008 | CN201129177Y Drill rod back subsection grouting apparatus |
| 10/02/2008 | DE102007015259A1 Reibrohranker mit Patronenkleber Friction Bolts with adhesive cartridges |
| 09/30/2008 | US7428936 Automated, low profile drilling/bolting module |
| 09/30/2008 | US7428935 Automated, low profile drilling/bolting module with manual bolt magazine |
| 09/24/2008 | CN201121520Y Composite anchor bar tray |
| 09/24/2008 | CN101270667A Surrounding rock supporting method for ultra-strong or strong or medium rock burst tunnel section deep imbedded in underground chamber |
| 09/17/2008 | CN101266473A Anchorage cable stretching automatic monitoring system and control method |
| 09/12/2008 | WO2008106737A1 Rock bolt and its fabrication and installation |
| 09/11/2008 | US20080219775 Bolt assembly |
| 09/10/2008 | CN101260672A Weak surface rock slope grouting method and anchor tube for grouting |
| 09/10/2008 | CN101260669A Drilling, spraying, injection integral enlarging anchor rod construction method |
| 09/10/2008 | CN100417786C Self-propelled cable machine |
| 09/10/2008 | CN100417785C Self-propelled anchor machine |
| 09/09/2008 | CA2605208A1 Bolt assembly |
| 09/03/2008 | EP1751397A4 Continuous chamber environment resistant retaining wall block and methods of use thereof |
| 09/03/2008 | CN201110182Y Machine for installing anchor |
| 09/03/2008 | CN201110176Y Roofbolter mechanism |
| 09/03/2008 | CN101255799A Tunnel inner micro-destabilization slip-casting technique |
| 09/03/2008 | CN101255798A Tunnel inner micro-destabilization slip-casting control method in complex environmental condition |
| 08/28/2008 | US20080205994 Drill bit and a single pass drilling apparatus |
| 08/27/2008 | CN201106451Y Track-mounted liftable top-side construction drilling machine for anchor bar and anchor wire |
| 08/27/2008 | CN101251021A Tensioning assembly for a cable bolt |
| 08/27/2008 | CN101250983A Single tube all-directional drilling injection slip-casting drilling bit capable of fluid-control starting and stopping auxiliary slip-casting hole |
| 08/27/2008 | CN101250979A Rockbolt drilling machine |
| 08/26/2008 | US7416033 Instrumented drill head, related drilling/bolting machines, and methods |
| 08/20/2008 | CN201103341Y Novel anchor lever drilling rig capable of quick switching cutting mode |
| 08/14/2008 | US20080193224 Guy anchor equalizer plate with ultrasound port |
| 08/06/2008 | CN101235721A Reasonable replacement homogeneous wall rock soft rock laneway support construction technology |
| 08/06/2008 | CN101235720A Excitated gap decompressed soft rock laneway support technology |
| 08/06/2008 | CN101235719A Prevacuated decompressed soft rock laneway support technology |
| 08/05/2008 | US7407344 Automated, low profile drilling/bolting module with roof reference guide |
| 08/05/2008 | US7407021 Methods for the installation of earth anchors |
| 07/24/2008 | WO2008088372A2 Improved earth anchor |
| 07/24/2008 | CA2642556A1 Improved earth anchor |
| 07/23/2008 | EP1945910A1 Drill slide for rock drilling apparatus |
| 07/16/2008 | CN100402793C Low tunnel rockbolt anchorage cable pneumatic drilling machine |
| 07/16/2008 | CN100402792C Gantry type self-walking roofbolter |
| 07/03/2008 | WO2008051728A3 A breakable rock bolt |
| 07/02/2008 | EP1939394A2 Anchor with grout jacket |
| 07/02/2008 | CN101213351A Drill slide for rock drilling apparatus |
| 07/02/2008 | CN100398782C Vertical pipe vacuum pre pressing bidirectional slip casting method and sealed slip casting system thereof |
| 06/26/2008 | DE102006059891A1 Anker mit Spreizelement und Verfüllmantel Anchor with spreader and Verfüllmantel |
| 06/26/2008 | DE102006058458A1 Testing device consists of workpiece carrier which has a chamber and temperate system for heating and cooling of chamber |
| 06/25/2008 | CN101205808A Lower seal board of patching machine |
| 06/25/2008 | CN100396882C Crawler-type walking rockbolt drilling carriages |
| 06/19/2008 | WO2008010757A9 Arrangement and method for determining the position of a rock reinforcing bolt |
| 06/18/2008 | CN101201005A Anchor bar/anchorage cable water stopper and method of use thereof |
| 06/11/2008 | CN101196118A Advanced double rows slip casting ductule construction technique |
| 06/10/2008 | US7385014 Use of ethylenically unsaturated isocyanate derivatives for covalently bonding impurities in curable compositions having active hydrogen atoms |
| 06/05/2008 | DE102006056865A1 Ankerhülse für einen Verbundanker Anchor sleeve for a shear connector |
| 06/04/2008 | CN201068799Y Tunnelling bolting combined machine |
| 06/03/2008 | US7381013 Rock bolt post grouting apparatus |