| Patents for E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection (4,377) |
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| 02/04/2010 | US20100028088 Breakable rock bolt |
| 02/03/2010 | CN201396179Y Back-resistant self-grout stopping grouting anchor |
| 02/03/2010 | CN201396178Y Conical round-tip bolt |
| 02/02/2010 | US7654775 Soil nail launcher |
| 01/28/2010 | WO2010009507A1 A method of swaging |
| 01/28/2010 | WO2010009506A1 A method of encasing a yielding rock bolt shaft |
| 01/28/2010 | US20100021245 Deformable rock bolt |
| 01/28/2010 | DE102008040694A1 Verankerungselement Anchoring element |
| 01/27/2010 | EP2147185A1 Pipe coupling |
| 01/24/2010 | CA2674017A1 Anchoring element |
| 01/24/2010 | CA2673812A1 Anchoring element |
| 01/21/2010 | WO2010006374A1 Stabilising rock masses |
| 01/21/2010 | US20100014923 Method of setting a self-drilling, chemically anchorable fastening element and a self-drilling chemically anchorable fastening element |
| 01/21/2010 | US20100011678 Double anchor and lifting shackle for concrete slabs |
| 01/21/2010 | DE102008040510A1 Setzverfahren eines selbstbohrenden, chemisch verankerbaren Befestigungselementes Setting method of self-drilling, chemically anchored fastening element |
| 01/20/2010 | EP2146050A2 Setting method of a self-drilling chemically anchored attachment element |
| 01/20/2010 | EP2145078A1 Device for producing a drill hole in rock material |
| 01/20/2010 | EP2145077A1 Device for producing a drill hole in rock material |
| 01/20/2010 | EP2094944B1 A deformable rock bolt |
| 01/19/2010 | US7648311 Cable bolt |
| 01/13/2010 | EP2087203B1 Improved sliding anchor |
| 01/13/2010 | CN201381861Y Soft expansion-type surrounding rock roadway support device |
| 01/12/2010 | US7645096 Yielding rock bolt |
| 01/06/2010 | CN201377333Y Expansion type recyclable rock bolt |
| 01/06/2010 | CN201377332Y Recovery type anchor rod expanding device |
| 01/06/2010 | CN201377331Y Full-length pressure grouting anchor rod |
| 01/06/2010 | CN201377330Y Wing compressible pallet and horseshoe cushion |
| 01/06/2010 | CN100577986C Goaf surrounding rock around gob-side supporting method under three soft geological condition |
| 01/06/2010 | CN100577982C A drill bit, a drill rod and a self drilling roof bolt |
| 12/31/2009 | US20090324343 Injection bolt with a fixed static mixer |
| 12/30/2009 | WO2009157846A1 A cuttable drilling tool, and a cuttable self drilling rock bolt |
| 12/30/2009 | CN100575615C Multistage bag-type extrusion anchor bar |
| 12/24/2009 | US20090317197 Tension Assembly |
| 12/23/2009 | CN201367910Y Composite supporting anchor bolt |
| 12/23/2009 | CN201367909Y Novel anchor rod with end anchorage and full-length radial anchorage |
| 12/23/2009 | CN201367592Y Rotary-pressing pre-stressed flexible and random anchor rod |
| 12/17/2009 | WO2009150617A1 Anchoring device |
| 12/16/2009 | CN201363159Y Glass reinforced plastic anchor rod |
| 12/09/2009 | CN201358806Y Direct-connected combined type hollow anchor rod |
| 12/09/2009 | CN101598026A Primary supporting structure of loess stratum super large section tunnel of shallow-buried undercrossing high-speed highroad |
| 12/03/2009 | US20090297279 rock bolt and an anchoring device |
| 12/03/2009 | US20090297278 Fiber reinforced plastic drilling anchor |
| 12/02/2009 | CN101592032A Primary support construction for shallow-buried extra-large section tunnel crossing highway underneath in uneven strata |
| 12/01/2009 | US7625155 Mine roof cable bolt assembly |
| 12/01/2009 | US7624556 Threaded deformed reinforcing bar and method for making the bar |
| 11/25/2009 | CN201351505Y Anchor rod with centering rings |
| 11/25/2009 | CN101586466A Pressure type anchor rod |
| 11/24/2009 | CA2463028C Roof bolts for use in mines, a method for their production and method for their installation |
| 11/21/2009 | CA2666031A1 Fastening element |
| 11/19/2009 | US20090285641 Mine roof and rib support device |
| 11/19/2009 | US20090285638 One-piece drill bit for single-pass anchor bolting and single pass drilling apparatus |
| 11/19/2009 | DE102008023666A1 Device for fixing load at ceiling cavity, has sub-component formed as profile, plate with hole provided at lower end of profile and arranged perpendicular to profile, and shaft extending through hole |
| 11/18/2009 | CN201347766Y Inflatable anchor rod |
| 11/18/2009 | CN201347765Y Yielding anchor cable |
| 11/18/2009 | CN101581226A Subsection anchor rod and anchoring method |
| 11/18/2009 | CN101581225A Compressible increasing resistance anchor rod prestressed control component |
| 11/17/2009 | US7617887 Method for casing drilling, drilling unit and adapter device |
| 11/12/2009 | WO2009092626A3 Injection head for an injection bore anchor |
| 11/11/2009 | CN201344040Y High-strength pretightening force yielding glass fiber reinforced plastic anchor bar |
| 11/11/2009 | CN201344038Y Mining survival active supporting net |
| 11/05/2009 | WO2009134139A1 Surface retaining face plate for rock bolts |
| 10/27/2009 | CA2529372C Affixing an anchor in a drilled hole |
| 10/27/2009 | CA2454067C Connecting an anchoring rod to a drilling tool |
| 10/21/2009 | EP2110511A1 A two-stage rock bolt & method of use |
| 10/21/2009 | CN100552188C Rockbolt |
| 10/15/2009 | DE102008018587A1 Device for production of base and rock anchor for embodying artifacts of superstructure or foundation engineering, has anticorrosion material supported in dispensing unit arranged in upward open trough |
| 10/15/2009 | DE102008001147A1 Electrical energy supplying device i.e. rock bolt, for electronic monitoring- and transmission module, has heat conductive structure connected with thermo-electric generator, which generates electrical energy from temperature difference |
| 10/14/2009 | EP2027366B1 Fiber-reinforced plastic drilling anchor |
| 10/14/2009 | CN100549364C Roof bolt |
| 10/08/2009 | WO2009092659A3 Injection head |
| 10/07/2009 | CN201321863Y Anchor cable for mining |
| 10/07/2009 | CN101550835A Tapering-type round-tip anchor rod |
| 10/07/2009 | CN101550696A Multiple anti-corrosive controllable expansion extrusion soil anchor and construction method |
| 10/06/2009 | US7597505 Roof bolt plate |
| 10/01/2009 | US20090245943 High face-area low-volume concrete wall block, form and method |
| 09/30/2009 | CN201318182Y Extensible pallet board |
| 09/30/2009 | CN201318181Y Anchor rope or anchor rod equipped with centering bracket |
| 09/30/2009 | CN101548064A System and method for mine roof counter bore and cable bolt head securement therein |
| 09/30/2009 | CN100545421C PET plastic anchor rod body manufacturing method |
| 09/24/2009 | WO2009115307A1 Corrosion-protected self-drilling anchor and anchor subunit and method for the production thereof |
| 09/24/2009 | WO2009027543A3 Method for erecting a construction and masonry work anchoring system |
| 09/24/2009 | DE112007002517T5 Gesteinsanker und Verankerungsvorrichtung Rock bolts and anchoring device |
| 09/24/2009 | DE112007002516T5 Bohrwerkzeug, selbstbohrender Gesteinsanker, Bohrer, Verankerungsvorrichtung für einen selbstbohrenden Gesteinsanker, Schaft für ein Bohrwerk und Endkupplung für ein Bohrwerkzeug Drill, self-drilling rock bolt, drill, anchoring device for a self-drilling rock bolt shank for a boring and end coupling for a drilling tool |
| 09/24/2009 | DE102008014700A1 Korrosionsgeschützter Selbstbohranker sowie Verfahren zu dessen Herstellung Corrosion-resistant and self-drilling method for its manufacture |
| 09/24/2009 | CA2718556A1 Corrosion-protected, self-drilling anchor and anchor subunit and method for the production thereof |
| 09/22/2009 | CA2392557C Arrangement for feeding bonding material |
| 09/16/2009 | CN101535598A A rock bolt and an anchoring device |
| 09/16/2009 | CN101535597A 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 |
| 09/16/2009 | CN100540847C Extruder |
| 09/15/2009 | US7588394 Low profile mine roof support |
| 09/11/2009 | WO2009110894A1 Tensionable spiral bolt with resin nut and related method |
| 09/09/2009 | CN100538013C Lock bolt made of steel pipe |
| 09/03/2009 | WO2009106099A1 Improved sliding anchor |
| 09/03/2009 | WO2009066246A3 Hydraulically inflatable rock anchor with pressure indicator |
| 09/03/2009 | US20090220309 Self Drilling Rock Bolt |
| 09/03/2009 | CA2715794A1 Improved sliding anchor |
| 09/02/2009 | EP2096258A2 Anchor with grout jacket |
| 09/02/2009 | EP2094944A1 A deformable rock bolt |
| 09/01/2009 | CA2442320C Method and device for drilling a hole and for securing an anchorage in a bore hole |
| 08/26/2009 | CN201297179Y Self-locking-type anchor rod |