| Patents for E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection (4,377) |
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| 01/30/2003 | WO2003008763A1 Connecting an anchoring rod to a drilling tool |
| 01/30/2003 | WO2003008762A1 Drilled hole closure |
| 01/29/2003 | CN2533267Y Combined anchor bolt |
| 01/29/2003 | CN2533266Y Recovery type plastic anchor bolt |
| 01/22/2003 | CN2532240Y Quick assembling anchoring-bolt and drilling rod thereof |
| 01/08/2003 | EP1204825B1 Securing element |
| 01/02/2003 | EP0815329B1 Multilayer traction element in the form of a loop |
| 01/01/2003 | CN1388304A Isostrength conical-section roof bolt |
| 12/12/2002 | WO2002099251A1 Rock bolt and method of use |
| 12/10/2002 | US6491478 Tubular anchor |
| 12/10/2002 | CA2240144C Low torque threaded fastener and mine roof support system using such a fastener |
| 12/04/2002 | CN2523952Y Cementing anchor rod |
| 12/04/2002 | CN1382563A Straight bit for rock |
| 11/27/2002 | CN1382243A Self drilling roll bolt |
| 11/13/2002 | EP1255914A1 Injection anchor |
| 11/07/2002 | WO2002088523A1 Method and device for drilling a hole and for securing an anchorage in a bore hole |
| 11/05/2002 | US6474910 Rockbolt assembly |
| 11/02/2002 | CA2381695A1 Strand end terminations |
| 10/31/2002 | DE10135159C1 Borehole plugging system for use in tunneling and mining work uses inflatable balloon held on metal tube by clamping rings at either end |
| 10/24/2002 | US20020153173 Percussion borer for forming bores in stone material |
| 10/24/2002 | DE10148683C1 Injection bore anchor has steel tube with smooth outer surface section and bore drive with exchangeable adaptor |
| 10/24/2002 | DE10119562A1 Schlagbohrwerkzeug für Gestein For percussion rock |
| 10/23/2002 | EP1251238A1 Percussion rock drill |
| 10/17/2002 | WO2002081866A1 Rock bolt |
| 10/10/2002 | WO2002079070A2 Surface control bearing plate |
| 10/03/2002 | WO2002076646A1 Improvements in and relating to rock bolting |
| 10/02/2002 | CN2514116Y Bonded recoverable anchor rod |
| 10/02/2002 | CN2514115Y Expansion-type telescopic metallic anchor rod |
| 10/01/2002 | US6457910 Tubular anchor |
| 10/01/2002 | US6457909 Multi-purpose anchor bolt assembly |
| 09/26/2002 | WO2002075116A1 A method for stabilization of rock and soil masses, and a rock bolt for practicing the method |
| 09/25/2002 | CN2512910Y Full length recovering resin metal rockbolt |
| 09/18/2002 | CN1369617A Spiral-rib anchor rod and spiral-rid drilling rod for drilling hole for it |
| 09/12/2002 | US20020125647 Washer for a chemical anchor |
| 09/12/2002 | DE10111470A1 Unterlegscheibe für chemische Anker Washer for chemical anchors |
| 09/11/2002 | EP1239114A1 Washer for injected grout anchor |
| 09/10/2002 | US6447228 Rock bolt and method of forming a rock bolt |
| 09/06/2002 | WO2002020945A3 Mobile system for manufacturing and installing reinforcing members |
| 09/06/2002 | WO2002002910A3 Appartus and method for a yieldable tendon mine support |
| 08/29/2002 | DE10106695A1 Bohrkrone für einen Bohr- oder Injektionsanker Drill bit for drilling or injection anchor |
| 08/28/2002 | EP1234103A1 Arrangement for feeding bonding material |
| 08/28/2002 | CN2507998Y Mine separated recoverable accessory anchor bolt |
| 08/20/2002 | US6435778 Cable truss system and related method of installation |
| 08/15/2002 | US20020110426 Cable bolt with mixing delay device |
| 08/14/2002 | CN1363759A Combined first-anchoring-after-grouting anchor rod |
| 08/07/2002 | CN2504388Y Uniform strength rockbolt body |
| 08/06/2002 | US6428243 Cable bolt |
| 08/06/2002 | CA2262950C System for securement of a mesh screening means and method of installation |
| 07/24/2002 | EP1224375A1 Self drilling roof bolt |
| 07/24/2002 | CN2502009Y Rapid mounting flexible anchoring-bolt |
| 07/18/2002 | US20020094240 Expansion shell assembly |
| 07/17/2002 | EP1222363A1 Apparatus for the manufacture of rock bolts |
| 07/11/2002 | DE10100715A1 Tension rod for stabilizing a wall body comprises elongated tension elements inserted in a bore hole of the wall body together with an injection tube arranged in their center and joined to the wall body by a hardening material |
| 07/04/2002 | DE10061260A1 Threaded, radially-expansive masonry fastening includes clamping jaw diverting applied torque towards walls of drilled hole |
| 07/03/2002 | CN2498333Y Separate recovered anchor pin for mining |
| 07/03/2002 | CN2498332Y Fiber reinforced plastic flexible anchor pin with metal casing |
| 06/27/2002 | US20020081160 Expansion anchor |
| 06/27/2002 | US20020081159 Multi-purpose anchor bolt assembly |
| 06/26/2002 | EP1217167A2 Multi-purpose anchor bolt assembly |
| 06/20/2002 | DE10060510A1 Verbundanker Xings |
| 06/19/2002 | CN2495809Y Left hand thread type glass fiber reinforced plastic anchor rod |
| 06/12/2002 | EP1213492A1 Expansion anchor |
| 06/11/2002 | US6402433 Tensionable mine roof bolt |
| 06/04/2002 | US6397957 Jacket tube for a drilling and anchoring device |
| 05/30/2002 | US20020064430 Anchor rod with surface areas and friction |
| 05/30/2002 | US20020064429 Method and apparatus for re-tensioning a roof bolt in an underground mine |
| 05/23/2002 | DE10057041A1 Anchoring device to be used in particular for brittle areas in mining or tunneling, assembled of permanently joined mantle and folded inner tube |
| 05/23/2002 | DE10052306C1 Bore injection anchor, for tunneling applications, has raised projections and/or recesses in its outer mantle |
| 05/22/2002 | EP1206625A1 Method for fixing a spreading anchor and spreading anchor |
| 05/21/2002 | US6390735 Apparatus and method for a yieldable tendon mine support |
| 05/16/2002 | DE10053499A1 Drill of solid rod and bit cases rod to form annulus for settable medium to issue through drillbit outlets to backflow annulus to set there between casing pipe and borehole wall. |
| 05/15/2002 | EP1204825A1 Securing element |
| 05/15/2002 | EP0948701B1 Process and device for simultaneously drilling and lining a hole |
| 05/15/2002 | CN2491604Y Support anchor arm |
| 05/10/2002 | CA2361460A1 Method for performing wedge analysis for assessing wedge instabilities in underground openings |
| 05/01/2002 | CN2489096Y Tubular anchoring rod for anchor |
| 04/25/2002 | US20020046535 Tubular anchor |
| 04/17/2002 | CN2486739Y Self feeding reclaimable anchor rod |
| 04/10/2002 | CN2485424Y Anchoring bolts with uniform strength joints |
| 04/04/2002 | DE10046804A1 Strata or rock bolt with smooth or profile shaft uses pick-type mixing tip converted from bolt during production to crush open and mix chambered cartridges assisted by mixer blades further back. |
| 03/21/2002 | US20020034424 Tubular anchor |
| 03/20/2002 | EP1187958A1 Concrete structure comprising anchor rods and anchor rod |
| 03/14/2002 | WO2002020945A2 Mobile system for manufacturing and installing reinforcing members |
| 03/14/2002 | US20020030398 Method and system for mining hydrocarbon-containing materials |
| 03/07/2002 | WO2002018103A1 Inflatable tensioning device |
| 03/07/2002 | US20020028113 Method and apparatus for secondary roof support in an underground mine |
| 03/07/2002 | CA2419720A1 Inflatable tensioning device |
| 03/06/2002 | EP1183441A1 Tube-formed rock bolt |
| 03/06/2002 | CN2480547Y Anchoring-bolt with screw end |
| 02/28/2002 | WO2001088339A8 Method for setting anchoring bolts in mines |
| 02/28/2002 | US20020025230 Three-prong shell |
| 02/27/2002 | CN1079880C Process and device for simultaneously drilling and lining hole |
| 02/20/2002 | CN2477831Y Flexible prestressed anchor appts. |
| 02/13/2002 | CN2476643Y Glass fibre reinforced plastic roofbolt |
| 02/06/2002 | CN2475833Y Prestressing grouting for external head of anchor rod |
| 01/26/2002 | CA2353441A1 Torque-tension anchor fitting |
| 01/10/2002 | WO2002002910A2 Appartus and method for a yieldable tendon mine support |
| 01/09/2002 | CN2470538Y Novel anchoring rod |
| 12/19/2001 | CN2466350Y Combined anchoring first and grouting then anchoring bolt |
| 12/06/2001 | DE10116447A1 Expansion assembly for mine roof bolts, is positioned on the bolt, comprises three-prong expansion shell and plug which defines an interior cavity and outer surface |