| Patents for E21D 20 - Setting anchoring-bolts (3,685) |
|---|
| 06/12/1979 | US4157878 Connecting apparatus for hingedly and slidably connecting an attachment to self-propelled mine vehicle |
| 06/12/1979 | US4157677 Self-drilling dowel with drill head |
| 06/12/1979 | CA1056339A1 Cartridge containing self-setting composition for use in fixing elements in a substrate and method of making same |
| 06/05/1979 | US4157264 Acrylic acid polymer set-inhibitor |
| 05/08/1979 | US4153156 Multi-component curable polymer system |
| 05/08/1979 | US4153121 Fluid operated undercutter |
| 03/27/1979 | CA1051216A1 Method and arrangement for anchoring an object to a support structure |
| 03/20/1979 | US4144796 Expansion dowell assembly with setting control |
| 02/20/1979 | US4140429 Corrosion protected tensioning member for a prestressable anchor in solid rock |
| 02/20/1979 | US4140428 Tie rod support for mine |
| 02/13/1979 | US4139323 Rock anchor |
| 01/30/1979 | US4136774 Rock bolt resins |
| 01/30/1979 | CA1047448A1 Apparatus and processes |
| 01/23/1979 | CA1047026A1 Tool for cutting groove in hole |
| 01/16/1979 | CA1046305A1 Self-drilling thermal bolt |
| 01/02/1979 | US4132080 Resin anchored rock or mine roof bolt anchor mechanism |
| 12/12/1978 | US4129007 Anchor device for resin anchor system |
| 12/12/1978 | CA1044117A1 Hydraulic flow divider for a mining vehicle |
| 12/12/1978 | CA1044053A1 Mine bolt tension indicator |
| 12/05/1978 | CA1043596A1 Adhesively secured anchor bolt |
| 11/28/1978 | US4127001 Inorganic cement grouting system for use in anchoring a bolt in a hole |
| 11/28/1978 | US4127000 Method and apparatus for installing chemical anchor bolt assemblies in earth formations |
| 11/21/1978 | US4126009 Inorganic cement grouting system for use in anchoring a bolt in a hole |
| 11/21/1978 | US4126005 Inorganic cement grouting system for use in anchoring a bolt in a hole and compartmented package for use therewith |
| 11/21/1978 | US4126004 Friction rock stabilizer |
| 11/21/1978 | US4126003 Inorganic cement grouting system for use in anchoring a bolt in a hole |
| 10/31/1978 | US4122681 Mine roof support assembly |
| 10/31/1978 | CA1041327A1 Self-drilling and tapping masonry anchor |
| 10/31/1978 | CA1041326A1 Self-drilling one-piece masonry anchor |
| 10/03/1978 | US4117894 Drill steel guide for a mine drilling machine |
| 09/26/1978 | US4116368 Clog-free inorganic grout emplacement gun |
| 08/29/1978 | CA1037279A1 Method and arrangement for anchoring an object to a support structure |
| 08/22/1978 | US4108253 Elevatable operator's compartment having a drill steel guide for a mine drilling machine |
| 08/08/1978 | US4105114 Apparatus and processes |
| 08/08/1978 | US4105081 Rock-drilling and bolt-setting apparatus |
| 08/01/1978 | US4103771 Detecting resin cure |
| 07/18/1978 | US4101141 Drive chuck |
| 07/04/1978 | US4098353 Rotatable mine drilling apparatus |
| 07/04/1978 | US4098166 Anchoring member secured by an adhesive material |
| 06/27/1978 | US4097854 Sensing mechanism for mine roof bolting apparatus |
| 06/27/1978 | US4096944 Cartridge for grouting an anchor element in a hole of a support structure |
| 06/13/1978 | US4094222 Adhesively secured anchor bolt |
| 06/13/1978 | US4094158 Loading gate for mine roof bolter apparatus |
| 06/06/1978 | US4092814 Reinforcing rod |
| 04/25/1978 | US4085492 Bending and straightening mechanism for mine roof bolts |
| 03/21/1978 | US4079792 Mine roof support for a mobile drilling machine |
| 03/21/1978 | US4079592 Method of and apparatus for feeding and inserting bolts in a mine roof |
| 01/17/1978 | US4068728 Hydraulic flow divider for a mining vehicle |
| 12/13/1977 | US4062412 Flexible shaft drilling system |
| 11/08/1977 | US4057115 Flexible shaft for a roof drill |
| 11/01/1977 | US4056036 Borehole anchor |
| 10/25/1977 | US4055051 Unitary drill bit and roof bolt |
| 10/04/1977 | US4051683 Method and apparatus for supporting a mine roof |
| 10/04/1977 | US4051681 Unitary roof bolt assembly |
| 09/27/1977 | US4050259 Safety shield and temporary roof support |
| 09/20/1977 | US4048875 Apparatus for screwing a threaded nut onto a steel rod |
| 08/30/1977 | US4044512 Method and arrangement for anchoring an object to a support structure |
| 07/19/1977 | US4036026 Method and apparatus for establishing an anchor |
| 07/12/1977 | US4034641 Self-drilling and tapping masonry anchor |
| 07/12/1977 | US4034567 Self-drilling thermal bolt |
| 07/05/1977 | US4033419 Vibrator and pushing apparatus for driving metal pins in rock faces in mines |
| 05/31/1977 | US4026186 Self-drilling one-piece masonry anchor |
| 05/31/1977 | US4026116 Mine roof supporting |
| 05/17/1977 | US4023373 Anchor bolt assembly and utilization |
| 04/26/1977 | US4019630 Cartridge containing a self-setting composition |
| 03/01/1977 | US4009778 Dual compartment package and method for making same |
| 02/15/1977 | US4007831 Cartridges containing self-setting mixes |
| 02/01/1977 | US4005811 Roof bolt injection mast |
| 01/18/1977 | US4003233 Bending and straightening mechanism for mine roof bolts |
| 01/04/1977 | US4000681 Mine bolt tension indicator |
| 12/14/1976 | US3996722 Method of making a cartridge |
| 12/07/1976 | US3995905 Method and apparatus for roof bolting and transferring mined material |
| 10/26/1976 | US3987635 Method of reinforcing rock strata |
| 08/10/1976 | US3973409 Apparatus for establishing an anchor |
| 07/27/1976 | US3971226 Prestressed roof support system |
| 07/27/1976 | US3971121 Method for extracting a mounted anchor bolt and anchor bolt extractor therefor |
| 07/13/1976 | US3968655 Method of reinforcing tunnels before excavation |
| 06/22/1976 | US3964265 Method and apparatus for mining and supporting the mine roof |
| 06/01/1976 | US3960222 Tool for cutting groove in hole |
| 05/18/1976 | US3957124 Tunnel-drilling truck |
| 04/20/1976 | US3951215 Mobile drilling and bolting machine |
| 04/06/1976 | US3948145 Fluid control mechanism |
| 03/02/1976 | US3940941 Anchor bolts for mine roofs and method for installing same |
| 02/10/1976 | USRE28707 Multi-purpose vehicle for use underground |
| 01/06/1976 | US3930639 Pumpable rockbolt method |