| Patents for E21D 20 - Setting anchoring-bolts (3,685) |
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| 08/19/2004 | US20040161316 Tubular mining bolt and method |
| 08/18/2004 | CN1162589C Ship anchor type anchor head of ground anchor stretching when grouting |
| 08/11/2004 | CN1520490A Drilled hole closure |
| 08/04/2004 | CN1517511A Rock roofbolt |
| 07/29/2004 | DE10301968A1 Fixing element used in the mining/tunnel construction industry comprises a mortar composition and a channel section arranged in an inner tube held by spacers between the outer wall of the inner tube and the inner wall of a receiving body |
| 07/28/2004 | CN2628729Y Fast mounting screw nut for anchoring-bolt |
| 07/28/2004 | CN1516777A Rock-bolting apparatus and method |
| 07/22/2004 | DE19503122B4 Injektionsanker Injection anchor |
| 07/21/2004 | EP1438479A2 Liquid seal for wet roof bit |
| 07/01/2004 | WO2004055326A1 An apparatus and method to anchor a rock bolt |
| 07/01/2004 | DE19956715B4 Streckenvortriebsmaschine mit kurzbauenden Schrämwerkzeugen und Ankerbohr- und -setzeinrichtungen Mining machine with short construction Schrämwerkzeugen and anchor drilling and setting devices |
| 06/30/2004 | CN2622391Y Self-drilling type sand grouting anchor |
| 06/30/2004 | CN1508392A Vertical pipe vacuum pre pressing bidirectional slip casting method and sealed slip casting system thereof |
| 06/24/2004 | US20040118578 Drill depth control device |
| 06/23/2004 | EP1053386B1 Feed apparatus for feeding capsular cartridges into drilled hole |
| 06/09/2004 | CN1503875A Method and device for drilling a hole and for securing an anchorage in a bore hole |
| 06/03/2004 | DE202004000088U1 Injection spike or anchor, for tunneling construction through loose rock, is a construction steel rod with an air slit along its length with a thread at the rear end and welded cutting burrs at the front end |
| 06/02/2004 | CN2619054Y Anchor rod drilling device |
| 05/18/2004 | US6736225 Guide for attachment to a roof bolter to allow for core drilling |
| 05/13/2004 | US20040089476 Drill for boring anchor fixing hole |
| 05/06/2004 | US20040084217 Method and device for drilling a hole and for securing an anchorage in a bore hole |
| 04/28/2004 | CN2613582Y Side anchorage drill machine |
| 04/14/2004 | EP1407115A1 Connecting an anchoring rod to a drilling tool |
| 04/14/2004 | EP1407114A1 Rock-bolting apparatus and method |
| 04/13/2004 | US6719072 Suction drill unit for dowel anchorage in rock |
| 04/06/2004 | CA2044720C Device for setting a rock bolt |
| 03/31/2004 | CN2608687Y Self drilling type rock prestressed grouting anchor |
| 03/16/2004 | US6705804 Anchor |
| 03/10/2004 | CN1141461C Method for anchor bolt construction by double sleeve |
| 03/03/2004 | CN2605382Y Bamboo-made pallet for mine roadway support |
| 03/03/2004 | CN1140602C Plugging compound for chemical compound and its product |
| 03/02/2004 | US6698980 Rock stabilizing apparatus and method |
| 03/02/2004 | US6698529 Translating turret rock bolter |
| 02/12/2004 | WO2004013463A1 Rock bolt post grouting apparatus |
| 02/12/2004 | DE10232762A1 Befestigungsmasse zum Fixieren eines Befestigungselementes und Verfahren Fixing material for fixing a fastener and method |
| 02/05/2004 | US20040021363 Method for boring and placing bolts for imbedding adhesively and device for carrying out this method |
| 02/04/2004 | CN2602163Y Anchor wire isolation rack |
| 01/29/2004 | WO2004010010A1 Fixing system and method |
| 01/21/2004 | EP1381756A1 Method and device for drilling a hole and for securing an anchorage in a bore hole |
| 01/21/2004 | CN1469017A High slope rock and soil anchoring construction method and apparatus |
| 01/15/2004 | DE10234255A1 Verwendung von Bohr-Injektionsankern als flächentragende Armierung eines Vortriebs-Gewölbeschirmes Use of drilling injection anchors as bearing surface reinforcement of a propulsion vault screen |
| 01/06/2004 | US6672806 Device for drilling and anchoring and process for placing grout anchors |
| 12/31/2003 | WO2004001192A1 Rock bolting system |
| 12/31/2003 | CN1464176A A pin timbering process and sectionalized hollow mud injecting stay bolt thereof |
| 12/24/2003 | CN2594551Y Bowl style slurry stopper |
| 12/21/2003 | CA2723330A1 Yielding strata bolt |
| 12/16/2003 | US6664316 Polyester resin compositions and uses thereof |
| 12/11/2003 | WO2003102373A1 Apparatus for installation of rock bolts |
| 12/04/2003 | WO2003044324A8 Method and apparatus for adhesively anchoring tubular rock bolts |
| 12/03/2003 | EP0960266B1 A cable bolt |
| 12/03/2003 | CN2589657Y Novel gear type anchor bolt drilling machine |
| 11/20/2003 | WO2003095796A1 Roof bolts for use in mines, a method for their production and a method for their installation |
| 11/20/2003 | CA2485457A1 Roof bolts for use in mines, a method for their production and a method for their installation |
| 11/19/2003 | CN1456790A Prestressed anchor pin with sand solidified inner head and its anchoring method |
| 11/13/2003 | US20030210967 Roof bolts for use in mines, a method for their production and a method for their installation |
| 11/12/2003 | EP1361336A1 Anchoring element |
| 11/06/2003 | WO2003091542A1 Rock bolt |
| 11/06/2003 | US20030206774 Anchor |
| 11/06/2003 | US20030205411 Guide for attachment to a roof bolter to allow for core drilling |
| 10/29/2003 | CN1451845A Anchor rod drilling device |
| 10/23/2003 | WO2003087538A1 A rock bolt |
| 10/22/2003 | EP1075587B1 Device for a rock wall |
| 10/16/2003 | WO2003085233A1 Method of localizing a hole drilled with a rock drilling machine |
| 10/16/2003 | US20030194278 Device for drilling and anchoring and process for placing grout anchors |
| 10/08/2003 | EP1027529B1 Apparatus for bending and cutting cable in rock bolting equipment |
| 10/02/2003 | US20030185634 Synthetic deformed bars and retaining walls |
| 09/25/2003 | US20030180098 Mobile system for manufacturing and installing reinforcing members |
| 09/10/2003 | CN2572005Y Support frame for anchor end of anchorage cable |
| 09/02/2003 | US6612783 Cable bolt with mixing delay device |
| 08/13/2003 | CN2565987Y Sprial tip-rib anchor rod and sprial rib drill rod for drilling sprial tip-rib anchor rod hole |
| 08/13/2003 | CN1436245A Lipopolysaccharides (LPS) extracted from Escherichia coli |
| 08/13/2003 | CN1435540A Gravity wharf wall structural body |
| 08/06/2003 | CN2564728Y Hydraulic anchor rod drilling machine |
| 08/05/2003 | US6602026 Extendible drill support frame for mining apparatus and roof bolting equipment |
| 07/31/2003 | WO2003062599A1 Rock bolts with an expandable element |
| 07/31/2003 | US20030143038 Multiple synthetic deformed bars and retaining walls |
| 07/31/2003 | US20030140840 Quay wall structure |
| 07/31/2003 | CA2410324A1 A quay wall structure of gravity type in which other types are applied |
| 07/29/2003 | US6598688 Drill steel for drilling mine roofs and associated method of drilling bores |
| 07/29/2003 | US6598309 Bolt centralizer |
| 07/23/2003 | EP1119687B1 Jacket tube for a drilling and anchoring device |
| 07/17/2003 | WO2003058003A2 Multiple synthetic deformed bars and retaining walls |
| 07/17/2003 | US20030133758 Method for setting anchoring bolts in mines |
| 07/10/2003 | WO2003025330A3 Liquid seal for wet roof bit |
| 07/09/2003 | EP1206625B1 Spreading anchor |
| 07/09/2003 | CN2559792Y Anchor bolt drawing off device |
| 07/08/2003 | US6588986 Device for drilling and anchoring and process for placing grout anchors |
| 07/03/2003 | DE10150904C1 Drilling and anchor setting arrangement |
| 06/19/2003 | US20030111892 Method of mining and an improved mining machine with a shovel moveable relative to a vehicle chassis |
| 06/12/2003 | US20030108573 Phenol, water solvent extraction using a protease |
| 06/11/2003 | EP1317603A2 Mobile system for manufacturing and installing reinforcing members |
| 06/11/2003 | EP1317602A1 Method for boring and placing bolts for imbedding adhesively and device for carrying out this method |
| 05/30/2003 | WO2003044324A1 Method and apparatus for adhesively anchoring tubular rock bolts |
| 05/28/2003 | EP0843775A4 A method for reinforcing rock with a tendon |
| 05/08/2003 | DE10150110C1 Drilling rig, for drilling and setting anchors, has a base plate with a gearing carriage joined to rollers |
| 05/07/2003 | CN1415843A Anchor cable supporting and method for mfg. anchor cable by using worn-out steel cable |
| 05/07/2003 | CN1415805A Ship anchor type anchor head of ground anchor in grouting stretch model |
| 04/24/2003 | DE20120080U1 Device for injecting mortar into borehole has retaining element with cylindrical section seating and clamping on injection pipe, and funnel-form section extending over front end of injection pipe is connected to cylindrical section |
| 04/10/2003 | US20030066665 Translating turret rock bolter |
| 04/09/2003 | EP1300546A1 Injection drilling anchor |