| Patents for E21D 20 - Setting anchoring-bolts (3,685) |
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| 01/22/1998 | DE19629211A1 Boring machine used in tunnel |
| 01/21/1998 | CN2272943Y Long anchor cable feeding machine |
| 01/20/1998 | CA2098071C Mine roof expansion anchor, tapered plug element used therein and methodof installation |
| 01/15/1998 | DE19712181A1 Drill bit |
| 01/07/1998 | EP0815329A1 Multilayer traction element in the form of a loop |
| 12/23/1997 | US5699572 For rotating a multi-strand cable rock anchor |
| 12/11/1997 | WO1997046794A1 A method for reinforcing rock with a tendon |
| 12/11/1997 | CA2230499A1 A method for reinforcing rock with a tendon |
| 11/25/1997 | US5689923 Device for securing steel reinforcing or prestressing members in an anchorage |
| 10/29/1997 | EP0803014A1 Process for setting roof bolts and adapter used for carrying out this process |
| 10/23/1997 | DE19641922C1 System for producing bore holes for setting anchors |
| 10/21/1997 | CA2147179C Multiple cable rock anchor system |
| 10/15/1997 | EP0800615A1 Rod for an anchor inserted by drilling and injection grouting |
| 09/10/1997 | EP0793765A1 Drilling and setting device for anchoring bolts |
| 08/28/1997 | DE19616660A1 Arrangement for supplying and disposal of underground working with multi-component resin |
| 08/13/1997 | EP0739442B1 Tensionable gfp rock anchor |
| 08/05/1997 | US5653557 Injection tube and method for placing a ground anchor |
| 07/12/1997 | CA2194817A1 Combination cable bolt head |
| 06/10/1997 | US5637158 Method for the manufacture of an expansible anchor consisting of corrosion-resistant steel |
| 06/10/1997 | US5636945 Rockbolt |
| 04/23/1997 | CN1148075A Plugging compound for chemical fastening |
| 04/22/1997 | US5622454 Anchor bolt for stabilizing rock strata and method of installing |
| 04/03/1997 | WO1997012122A1 Drilling and bolting apparatus for tunnelling and tunnel propping |
| 04/03/1997 | CA2230901A1 Drilling and bolting apparatus for tunnelling and tunnel propping |
| 03/30/1997 | CA2186672A1 Rock anchor |
| 03/26/1997 | EP0764786A1 Anchor-fixing capsules |
| 03/26/1997 | EP0749364A4 Method of securing an anchor with extrusion plastic molding in a solid wall substrate |
| 03/12/1997 | EP0761792A2 Putty composition for chemical fastening technology |
| 03/05/1997 | EP0760050A1 Tubeformed rock bolt |
| 02/26/1997 | CN1143720A Anchoring cartridge for hardening multi-component composition |
| 02/20/1997 | WO1997006211A1 Polyester resin compositions and uses thereof |
| 02/04/1997 | US5599140 Mine roof support system including an expansion anchor with means assisting resin component mixing and method of installation thereof |
| 01/30/1997 | WO1997003256A1 Anchor bolt fixing capsule |
| 01/28/1997 | US5597267 Bolt delivery system |
| 12/27/1996 | WO1996041932A1 Method of roof control in an underground mine |
| 12/27/1996 | EP0749364A1 Method of securing an anchor with extrusion plastic molding in a solid wall substrate |
| 12/27/1996 | CA2224207A1 Method of roof control in an underground mine |
| 12/19/1996 | DE19623653A1 Roadway driving machine with travel drive |
| 12/18/1996 | EP0748779A2 Anchoring cartridge for hardenable multicomponent mass |
| 12/12/1996 | WO1996039610A1 A system for monitoring an earth and/or rock body |
| 12/12/1996 | CA2221492A1 A system for monitoring an earth and/or rock body |
| 12/04/1996 | CN1137093A Mortar pail for reinforcing drilling anchoring part by chemical method |
| 11/28/1996 | DE19530432C1 Anchor bore and setting device for work platform for gallery advance working in mining and tunnel building |
| 11/20/1996 | CN2240609Y Self-advance type anchoring-bolt |
| 11/20/1996 | CN2240608Y Omnibearing hydraulic anchoring-bolt drill |
| 11/19/1996 | US5575846 Mortar composition including a mineral mortar paste |
| 10/30/1996 | EP0739442A1 Tensionable gfp rock anchor |
| 10/30/1996 | CN2238910Y Spalling plastic anchor bolt |
| 10/24/1996 | WO1996033337A1 A hydraulic arrangement for turning the actuator of a rock drilling machine |
| 10/17/1996 | DE19513202A1 Device for anchoring reinforcing and pre-stressing steel in foundations |
| 10/10/1996 | DE19512122A1 Anchoring bolt for supporting walls of hollow room or tunnel |
| 10/01/1996 | US5560740 Cable attachment device to spin single cables into resinous anchors in boreholes in geologic formation |
| 09/26/1996 | WO1996029483A1 Multilayer traction element in the form of a loop |
| 09/25/1996 | EP0733781A2 Mortar cartridge for chemical fixing of anchoring means in boreholes |
| 09/25/1996 | CA2150090A1 Mine roof expansion anchor, expansible shell element used therein and method of installation |
| 09/24/1996 | CA2172092A1 Mortar mixture unit for chemical attachment of anchoring means in boreholes |
| 09/17/1996 | US5556235 Rock bolter |
| 09/03/1996 | US5551805 Anchoring cartridge for anchoring a fastening element in a drilled hole |
| 08/21/1996 | CN1129292A Method for the manufacture of an expansible anchor consisting of corrosion-resistant steel |
| 08/20/1996 | US5546725 Composite anchor |
| 08/14/1996 | EP0726383A1 Injection anchor for tunnels and trenches |
| 08/14/1996 | CN2232981Y Anchoring-bolt broaching equipment |
| 08/13/1996 | US5544981 Capsule for use in fixing an anchor bolt |
| 08/13/1996 | US5544980 For emplacement in a borehole |
| 08/08/1996 | WO1996023959A1 Injection anchor |
| 08/08/1996 | DE19503122A1 Injektionsanker Injection anchor |
| 08/06/1996 | US5542788 Method and apparatus for monitoring mine roof support systems |
| 07/17/1996 | EP0721991A1 Process for manufacturing a stainless steel expanding anchor |
| 07/11/1996 | WO1996021087A1 Rod for an anchor inserted by drilling and injection grouting |
| 07/02/1996 | US5531546 Fastening anchor rod in bore hole with curable composition of vinyl ester urethane polymer |
| 07/02/1996 | CA2073828C Resin-mixing article for mine roof anchor |
| 06/06/1996 | WO1996017155A1 Drilling and setting device for anchoring bolts |
| 05/15/1996 | CN2227198Y Improved anchoring bolt |
| 04/09/1996 | US5505562 For use in a mine |
| 03/28/1996 | DE19535024A1 Positioning method for reinforcement rod in wall |
| 03/27/1996 | EP0703200A1 Hardenable mortar mass |
| 03/27/1996 | CN2223352Y Entry-driving machine carrying anchor bar drilling and mounting machine |
| 03/26/1996 | US5501551 Mine roof expansion anchor, expansible shell element used therein and method of installation |
| 03/21/1996 | WO1996008606A1 Process for setting roof bolts and adapter used for carrying out this process |
| 03/14/1996 | DE4432472A1 Verfahren zum Setzen eines Gebirgsankers und Adapterteil zur Verwendung in einem solchen Verfahren A method for setting a rock anchor and adapter part for use in such a process |
| 03/13/1996 | CN2222234Y Magnesium plate for holding anchoring-bolt |
| 03/07/1996 | WO1996007015A1 A rock bolt and method of installing a rock bolt |
| 03/07/1996 | CA2197997A1 A rock bolt and method of installing a rock bolt |
| 03/06/1996 | EP0553309B1 Drilling pipe |
| 02/27/1996 | US5494380 Resin injector system |
| 02/21/1996 | CN2220530Y Anchor rock mud filling machine |
| 01/23/1996 | CA1337959C Rebar installation tool |
| 12/14/1995 | WO1995033916A1 Tubeformed rock bolt |
| 12/14/1995 | CA2191760A1 Tubeformed rock bolt |
| 12/12/1995 | CA2039664C Barrier plug for a bore |
| 11/08/1995 | EP0680545A1 Means for anchoring a rock bolt made of concrete steel in a drill hole |
| 10/25/1995 | CN1110754A Large-head anchor rod construction method and special drilling machine |
| 08/30/1995 | EP0546128B1 Injection pipe and process for setting a rock anchor |
| 08/01/1995 | US5437526 Arrangement for anchoring a rod-shaped tension member of composite fiber material |
| 07/20/1995 | WO1995019491A1 Tensionable gfp rock anchor |
| 07/19/1995 | EP0663512A1 Anchoring cartridge |
| 07/13/1995 | DE4400644A1 Verspannbarer GfK-Gebirgsanker Braceable GfK rock bolts |
| 07/05/1995 | EP0661463A1 Compound anchor |
| 06/28/1995 | EP0659231A1 Rockbolt |
| 06/20/1995 | US5425601 Longwall mining roof control system |