| Patents for E21D 20 - Setting anchoring-bolts (3,685) |
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| 05/30/1990 | EP0370754A2 Expansion assembly for mine roof bolts |
| 05/22/1990 | CA2003629A1 Expansion assembly for mine roof bolts |
| 05/17/1990 | WO1990005227A1 Process for filling cavities using deformable hollow bodies |
| 05/16/1990 | EP0368838A1 Device for the consolidation of geological formations having no or only little stability |
| 05/15/1990 | CA1268935A1 Process for strengthening and sealing geological formations |
| 05/10/1990 | DE3837655A1 Verfahren zum verfuellen von hohlraeumen mittels verformbarer hohlkoerper A method for filling cavities by means of deformable hohlkoerper |
| 05/09/1990 | CN1041988A Anchor block inherent stress bearizing working method and testing device for anchor block pulling force and repetition inherent stress |
| 05/03/1990 | CA2002143A1 Process and apparatus for the protection of non-stable or moderately stable, cohesionless to slightly cohesive geologic formations |
| 05/02/1990 | EP0366103A2 Material for setting anchoring bolts |
| 04/26/1990 | CA2001603A1 Binder for fixing an anchor rod |
| 04/11/1990 | CN1007535B Anchor bolt assembly |
| 04/11/1990 | CN1007534B Method device and means for carrying out wire bolting of a rock |
| 03/21/1990 | CN1007282B Method of and device for carrying out wire bolting |
| 03/13/1990 | US4907917 Method of securing anchor rods |
| 03/06/1990 | US4905777 Device for producing drilling holes from an angled position with respect to the drilling axis |
| 02/27/1990 | US4904122 Anchoring device, such as a rock anchor |
| 02/14/1990 | EP0354760A2 Mine roof anchor having adjustable resin retaining washer |
| 01/31/1990 | EP0353050A1 A rock Anchor |
| 01/25/1990 | DE3824955A1 Method of producing ground anchors |
| 01/11/1990 | DE3905128A1 Fully bonding rope anchor |
| 01/09/1990 | CA1264230A1 Method, a device and a means for carrying out wire bolting of a rock |
| 01/02/1990 | US4891072 Anchoring bolts in drillholes |
| 12/28/1989 | DE3915922A1 Method and device for stabilising and supporting rock |
| 12/26/1989 | US4889191 Gooseneck assembly for rock drill and method for inserting friction rock stabilizer |
| 12/14/1989 | DE3915921A1 Double-curved, hydraulic, self-clamping rock bolt |
| 11/15/1989 | EP0341279A1 Anchoring bolt for rock |
| 11/08/1989 | CN1037010A Powder bag for inorganic cement anchor bar |
| 10/25/1989 | EP0338983A2 Use of two-components reactive resins for fastening purposes |
| 10/25/1989 | EP0338982A2 Dowel with sievelike hull |
| 10/12/1989 | DE3838880C1 Method of producing a grouted anchor, and grouted anchor for carrying out the method |
| 10/11/1989 | EP0150210B1 Continuous mining machine |
| 09/27/1989 | EP0333719A1 Reactive composition and multiple-chamber cartridge, and process for anchoring a fastening element to the fastening base. |
| 09/26/1989 | CA1260279A1 Method of and a device for guiding a wire in the wire bolting of a rock |
| 09/14/1989 | DE3807266A1 Verankerungspatrone Anchoring cartridge |
| 09/14/1989 | DE3806598A1 Verankerungspatrone Anchoring cartridge |
| 09/12/1989 | US4865489 Mine roof anchor having adjustable resin retaining washer |
| 09/12/1989 | US4865390 Continuous mining machine with roof supporting apparatus and method for anchoring crossbeam supports |
| 09/08/1989 | WO1989008203A1 Anchorage cartridge |
| 09/08/1989 | WO1989008202A1 Anchoring cartridge |
| 08/29/1989 | US4861198 Expansion assembly for mine roof bolts |
| 08/16/1989 | CN1034782A Suntaining-network method with flexible plastic rock bolts |
| 08/15/1989 | US4856384 Roof bolt drill pot drive |
| 08/01/1989 | CA1257976A1 Method of stabilizing a rock structure |
| 07/25/1989 | US4850746 Rock anchor assembly for securing roadways and wall surfaces of open cuts and tunnels |
| 07/18/1989 | US4848971 Roof bolt apparatus |
| 06/27/1989 | US4842063 Anchoring method and capsule therefor |
| 06/27/1989 | CA1256297A1 Method and a device for feeding concrete into a drill hole in the concrete bolting of a rock |
| 06/22/1989 | DE3827865C1 Roof-bolt drilling apparatus movable on support sections forming running rails |
| 06/06/1989 | US4836729 Anchoring unit for use in structures with internal open spaces |
| 06/01/1989 | WO1989004911A1 Anchoring bolt for rock |
| 05/24/1989 | EP0317547A1 Rock anchoring bolt |
| 05/23/1989 | US4832536 Anchor drilling unit |
| 05/23/1989 | US4832534 Method and device for stressed anchorage |
| 05/17/1989 | EP0315743A1 Method for making a tunnel or gallery, and tunneling machine for carrying out the method |
| 05/16/1989 | US4830544 Tie-rod anchoring apparatus and method |
| 05/16/1989 | CA1254047A1 Method and a device for guiding a concrete feeding hose in connection with the grout feed in rock bolting |
| 05/16/1989 | CA1254046A1 Method of and a device for carrying out wire bolting |
| 05/09/1989 | CA1253704A1 Apparatus for storing a concrete feeding hose in a rock bolting device |
| 05/03/1989 | EP0313774A1 Dual storing and transporting unit for two separated components of a two-component mixture |
| 04/26/1989 | EP0312776A1 Process for fixing anchoring rods |
| 04/11/1989 | US4820095 Anchor device for securing rock bolts |
| 04/04/1989 | CA1251960A2 Mine roof anchor assembly |
| 04/04/1989 | CA1251959A2 Resin secured mine roof anchor assembly |
| 03/14/1989 | CA1251067A1 Rockbolt |
| 02/22/1989 | CN2033056U Metal net for spraying anchor support |
| 02/21/1989 | CA1250162A1 Mine wall support anchor |
| 02/15/1989 | EP0302863A1 Process for strengthening and sealing geological formations |
| 02/07/1989 | US4802922 Capsule having a compartment containing cement and reactive filler; and catalytic lime and water mixture |
| 02/07/1989 | CA1249796A1 Destructible container for a multi-component settable means |
| 02/02/1989 | DE3726645C1 Anchor device for rock stabilising |
| 01/31/1989 | CA1249446A2 Method and apparatus for combining resin bonding and mechanical anchoring of a bolt in a rock formation |
| 12/13/1988 | US4790129 Ground control |
| 12/01/1988 | DE3717024A1 Device for drilling boreholes and injecting stabilising material |
| 11/29/1988 | CA1245486A1 Tubular expansion bolt |
| 11/22/1988 | US4786213 Device for storing a wire in a wire bolting means |
| 11/15/1988 | US4784531 For use in a mine to support a mine roof |
| 11/15/1988 | US4784530 Roof bolt apparatus |
| 10/25/1988 | CA1243516A1 Method and apparatus for combining resin bonding and mechanical anchoring of a bolt in a rock formation |
| 10/25/1988 | CA1243512A1 Rock anchor and method of placing it |
| 10/19/1988 | EP0287505A1 Fastening in surfaces having cavities |
| 09/15/1988 | DE3707036A1 Fastening system consisting of a drillhole and of a rock tie fastenable in this |
| 09/07/1988 | EP0280705A1 Process and device for producing drilling holes from an angled position in relation to the drilling axes. |
| 09/01/1988 | DE3801121A1 Tension or compression bar for connecting two concrete parts |
| 08/23/1988 | US4765778 Hardened material supported rock bolt and apparatus for installing same |
| 08/17/1988 | EP0278172A1 Anchoring |
| 08/16/1988 | US4764055 Resin reinforced expansion anchor system |
| 08/16/1988 | CA1240541A1 Combination expansion shell and resin secured mine roof anchor assembly |
| 08/09/1988 | CA1240162A2 Method and apparatus for combining resin bonding and mechanical anchoring of a bolt in a rock formation |
| 08/02/1988 | US4761099 Injecting polyurethane forming mixture |
| 07/26/1988 | US4759888 Method for automatically installing and testing grouted rock bolts |
| 07/19/1988 | US4758049 Apparatus for the underground operation of a movable mining machine |
| 07/12/1988 | CA1239027A1 Apparatus for installing anchors |
| 07/12/1988 | CA1239026A1 Method and apparatus for anchoring rock bolts and cables |
| 07/06/1988 | EP0273434A1 Driver for reinforcement bar chemical anchor |
| 06/28/1988 | US4753486 Mining machine with roof bolting apparatus |
| 06/22/1988 | EP0272233A1 Method of stabilizing a rock structure and stabilizer therefor |
| 06/14/1988 | US4750887 Anchor bolt assembly |
| 06/07/1988 | CA1237593A1 Ground control |
| 05/31/1988 | US4747727 Anchor rod assembly secured by hardenable mass |
| 05/24/1988 | US4746248 Anchor bolt assembly |