| Patents for E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection (4,377) |
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| 08/13/2008 | CN201100130Y Continuous screw thread resin anchor pole |
| 08/13/2008 | CN201099859Y Multi-segment pocket type squeezing -type anchor rod |
| 08/12/2008 | CA2384622C Apparatus and method for the manufacture of rock bolts |
| 07/30/2008 | EP1950375A2 Construction of superstructures and infrastructures |
| 07/30/2008 | CN201092863Y Non longitudinal rib anchor bar deformed steel bar |
| 07/30/2008 | CN101230786A Steel chord type force-measuring anchor stock |
| 07/30/2008 | CN101230784A Tunnel steel arch frame lock foot anchoring stock net-spraying composite structure |
| 07/29/2008 | US7404694 Method and device for stabilizing a cavity excavated in underground construction |
| 07/23/2008 | CN201090228Y Sleeve type antisepsis slip-casting anchor |
| 07/23/2008 | CN201090227Y Hollow combined type anchor |
| 07/23/2008 | CN201090226Y Anchor anti-rift arrangement |
| 07/23/2008 | CN101225745A Novel anchor cable for changing direction |
| 07/23/2008 | CN100404788C Flexible injection anchor rod |
| 07/17/2008 | WO2008039322A3 Friction rock stabilizer with point anchor |
| 07/17/2008 | US20080168981 Rigging system for supporting and pointing solar concentrator arrays |
| 07/03/2008 | WO2008079021A1 A deformable rock bolt |
| 07/02/2008 | EP1939394A2 Anchor with grout jacket |
| 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 | EP1934404A1 Friction bolt and expansion adaptor for said anchor |
| 06/19/2008 | WO2008052748A3 Disc nut |
| 06/19/2008 | DE102006053141B3 Verbesserter Gleitanker Improved sliding anchor |
| 06/18/2008 | EP1933005A1 Anchoring device for stabilising the ground |
| 06/18/2008 | CN201074521Y Anchor pile equipped with compressible means |
| 06/18/2008 | CN201074520Y Anchor cable equipped with compressible means |
| 06/11/2008 | CN101198764A Fluid recovery |
| 06/10/2008 | US7384216 Cable coupler having retained wedges |
| 06/05/2008 | CA2570022A1 Friction stabilizer with tabs |
| 06/03/2008 | US7381013 Rock bolt post grouting apparatus |
| 05/28/2008 | CN101189410A Method and device for drilling, particularly percussion drilling or rotary percussion drilling a hole in soil or rock material |
| 05/27/2008 | US7377724 Method and device for installing a self-drilling expandable rock bolt and a self-drilling rock bolt |
| 05/22/2008 | WO2008060212A1 A drilling tool, a self -drilling rock bolt, a drill bit, an ancoring device for a self -drilling rock bolt, a shaft for a drilling tool and an end coupling for a drilling tool |
| 05/22/2008 | WO2008060211A1 A rock bolt and an anchoring device |
| 05/22/2008 | CA2665474A1 A rock bolt and an anchoring device |
| 05/22/2008 | CA2665345A1 A drilling tool, a self-drilling rock bolt, a drill bit, an anchoring device for a self-drilling rock bolt, a shaft for a drilling tool and an end coupling for a drilling tool |
| 05/21/2008 | CN101184906A Method and device for drilling, particularly percussion or rotary percussion drilling, a hole in soil or rock material |
| 05/20/2008 | US7374370 Rock bolt anchor having concurrent chemical and mechanical anchoring means and method for using the same |
| 05/15/2008 | WO2008055696A1 Improved sliding anchor |
| 05/15/2008 | US20080112764 Ice anchor |
| 05/15/2008 | DE202008003381U1 Ankermutter für ein Zugglied sowie Anker Anchor nut for a tie and anchor |
| 05/14/2008 | EP1749144B1 Rock bolting method and rock bolt |
| 05/14/2008 | CN101178008A Coal mine tunnel broken two sides anchoring support method |
| 05/08/2008 | WO2008052748A2 Disc nut |
| 05/08/2008 | WO2008052313A1 Anchor bolt assembly |
| 05/08/2008 | US20080107488 Lock Bolt of High Strength Steel Pipe and Method of Manufacturing the Same |
| 05/07/2008 | CN201056703Y Pressure dispersion type monitoring device for applied force condition of anchor wire |
| 05/07/2008 | CN201056695Y Anchorage |
| 05/06/2008 | US7367751 Friction rock stabilizer with point anchor |
| 05/02/2008 | CA2566986A1 Grip anchor for concrete |
| 05/01/2008 | US20080101875 Geogrid provided with filtration mesh layer for geodetic engineering |
| 04/30/2008 | CN201053323Y Glass fibre anchor shaft body with steel jacket |
| 04/30/2008 | CN201053322Y Flame-retardant, antistatic bamboo composite tray |
| 04/24/2008 | WO2008048253A1 Floor span connector |
| 04/23/2008 | CN201050379Y Combined grouting anchor pile |
| 04/23/2008 | CN201050378Y Mining support metal net |
| 04/23/2008 | CN201050058Y Wave shape root screw thread metal anchor bar body for anchoring |
| 04/10/2008 | US20080085161 Method And System For Monitoring And Documenting Installation of Rock Reinforcement Bolt |
| 04/10/2008 | DE102006046762A1 Hollow bar shear connector e.g. cartridge anchor for use in e.g. mining, has crack valve provided at side of anchor head, plunger positioned at side of anchor base, and outer surface temporarily coated with filled glue e.g. nano adhesive |
| 04/09/2008 | EP1583888B1 A yielding rock bolt |
| 04/09/2008 | CN201045301Y Autobiography affect complex fiber anchoring-bolt |
| 04/09/2008 | CN201045298Y Large inclination angle coal seam alley way anchor cote bracket |
| 04/03/2008 | WO2008039322A2 Friction rock stabilizer with point anchor |
| 04/02/2008 | EP1682748B1 Method and device for installing a self-drilling expandable rock bolt and a self-drilling rock bolt |
| 04/02/2008 | CN201043468Y Hanging and assembling support structure of underground passage |
| 04/02/2008 | CN100378294C Device for connecting anchoring rod to drilling tool |
| 04/02/2008 | CN100378293C Drilled hole fixing device |
| 04/01/2008 | US7351756 Toughened polyethylene terephthalate |
| 04/01/2008 | US7350876 Combination panline and utility drilling or bolting unit |
| 04/01/2008 | CA2492245C Rock stabilizer |
| 03/27/2008 | US20080075539 Friction rock stabilizer with point anchor |
| 03/26/2008 | EP1902197A2 Construction of superstructures and infrastructures |
| 03/26/2008 | CN101148877A Multistage bag-type compression anchor bar |
| 03/20/2008 | WO2008031120A1 Corrosion-protected anchor |
| 03/19/2008 | CN201037249Y Self-drilling type pressure grouting transpression cartridge dispersive pressure anchor rope |
| 03/12/2008 | CN201033872Y Slip casting type anchor bar |
| 02/26/2008 | CA2340506C Method and system for mining hydrocarbon-containing materials |
| 02/21/2008 | WO2008019432A1 A tensioning device |
| 02/21/2008 | WO2008019409A1 Friction bolt and expansion adaptor for said anchor |
| 02/21/2008 | CA2660562A1 A tensioning device |
| 02/20/2008 | EP1888878A1 Method and device for drilling, particularly percussion drilling or rotary percussion drilling a hole in soil or rock material |
| 02/20/2008 | CN201025049Y An anchor return locker device for coal mine re-exploration laneway |
| 02/20/2008 | CN201025048Y Plastic compound recycling anchor pole |
| 02/20/2008 | CN201025047Y A novel anchor rope tool |
| 02/20/2008 | CN101126321A Expansion anchor rod |
| 02/20/2008 | CN100370111C Composite rockbolt |
| 02/14/2008 | US20080038068 Rock bolt |
| 02/13/2008 | EP1885997A1 Method and device for drilling, particularly percussion or rotary percussion drilling, a hole in soil or rock material |
| 02/06/2008 | CN101117889A Underground tunnel hanging-up assembling supporting construction |
| 02/06/2008 | CN101117888A Method for reinforcing underground mine main chute |
| 01/30/2008 | CN201013396Y Sticking type reclaimable plastic anchor rod |
| 01/30/2008 | CN201013395Y Positive anchor type reclaimable resin round bar anchor rod |
| 01/30/2008 | CN201013394Y Inverse anchor type reclaimable resin round bar anchor rod |
| 01/30/2008 | CN201013393Y Mining resin roll holding pad |
| 01/30/2008 | CN201013018Y Injection anchor bar of plasm capsule bag |
| 01/30/2008 | CN100365245C Shell expansion type rock bolt |
| 01/29/2008 | US7324007 Instrumented rock bolt, data logger and user interface system |
| 01/24/2008 | WO2008009344A2 Fastening of plastic film and precast concrete parts to anchors |
| 01/24/2008 | WO2006133190A3 Automated, low profile drilling/bolting machine |
| 01/23/2008 | CN201010905Y Force-measuring anchor stock |
| 01/22/2008 | US7320560 Controlled expansion of rock bolt |
| 01/22/2008 | US7320371 Method and device for producing pretensioned anchorings |