| Patents for E21D 21 - Anchoring-bolts for roof, floor, or shaft-lining protection (4,377) |
|---|
| 04/28/1987 | US4661022 Rock bolt structure and installation |
| 04/28/1987 | CA1220946A1 Mine roof supporting truss system |
| 04/21/1987 | US4659258 Dual stage dynamic rock stabilizing fixture and method of anchoring the fixture in rock formations |
| 04/07/1987 | US4655645 Method and apparatus for anchoring roof bolts |
| 04/07/1987 | US4655644 Binder-injecting rockbolt |
| 04/07/1987 | US4655643 For installation in an underground excavation to support the roof |
| 03/31/1987 | US4653810 Pre-bolting system for underground mines |
| 03/26/1987 | DE3532070A1 Roof bolt, in particular for mining |
| 03/26/1987 | DE3532069A1 Roof bolt, in particular for mining |
| 03/24/1987 | US4652178 For a friction rock stabilizer |
| 03/24/1987 | CA1219457A1 Positioning device |
| 03/17/1987 | US4650373 Rock bolt construction and installation |
| 03/17/1987 | US4649729 Method for manufacturing steel bar with intermittent smooth surface and patterned relief segments, and mine roof bolt product |
| 03/10/1987 | US4648753 Rock-bolt stabilizer device for mining and tunneling applications |
| 02/25/1987 | CN85205487U Composite material anchor-bolt |
| 02/17/1987 | US4643619 Apparatus for feeding cement material into a drill hole for cement bolting of a rock |
| 02/04/1987 | CN86201097U Expanding wedge type rock anchor bar |
| 01/13/1987 | US4636115 Expansion bolt and mine roof reinforcement therewith |
| 01/06/1987 | US4634317 Method of rock bolting and tube-formed expansion bolt |
| 01/06/1987 | US4633627 Earth anchors |
| 12/31/1986 | CN86202726U Anchoring apparatus for tube wedge type anchoring bolt |
| 12/30/1986 | US4632605 Method and apparatus for reinforcing and consolidating earth structures |
| 12/30/1986 | EP0207030A1 Method of stabilizing a rock structure |
| 12/30/1986 | EP0122924B1 Injection device |
| 12/23/1986 | US4630971 Apparatus for anchoring rock and the like |
| 12/18/1986 | WO1986007410A1 Device for anchoring in and/or reinforcing hard materials |
| 12/17/1986 | EP0204927A1 Yield tube rib bolt assembly |
| 12/09/1986 | CA1214946A1 Method for anchoring a bolt in a rock-like structure |
| 12/03/1986 | CN86100865A Yield tube rib bolt assembly |
| 12/02/1986 | US4626139 Roof bolt anchor |
| 12/02/1986 | CA1214670A1 Tie rod assembly for rock borehole anchor |
| 10/28/1986 | US4619559 Rock bolting |
| 10/21/1986 | US4618291 Nut member and mine roof support system incorporating same |
| 10/21/1986 | US4618290 Precast roof bearing block |
| 10/21/1986 | US4617715 Method for preliminary anchoring of a wire rope bolt |
| 10/08/1986 | EP0196451A1 Tension element for a rock bolt or the like |
| 09/30/1986 | CA1211947A1 Method and apparatus for feeding cement material into a drill hole for cement bolting of a rock |
| 09/22/1986 | EP0125261A4 A method and apparatus for reinforcing and consolidating earth structures. |
| 09/16/1986 | US4611954 Apparatus and method for mine installations |
| 09/10/1986 | EP0194007A1 Load-indicating device |
| 08/26/1986 | US4607984 Apparatus for anchoring a bolt in a rock formation |
| 08/13/1986 | EP0190460A1 Anchoring device for the traction member of an anchor, especially a rock anchor |
| 08/12/1986 | CA1209595A1 Long shelf life cementitious anchoring capsule |
| 08/05/1986 | CA1208947A1 Rock bolt |
| 07/31/1986 | WO1986004384A1 Deformed bar for adhesion and applying tension |
| 07/23/1986 | EP0188174A1 Anchor for wall consolidation in cavity structures |
| 07/22/1986 | US4601614 For installation in a bore in the roof of underground excavation |
| 07/09/1986 | EP0186991A2 Anchor bolt |
| 06/24/1986 | US4596496 Mine roof supporting truss system |
| 06/24/1986 | CA1206331A1 Multi-component grouting system |
| 06/17/1986 | US4595315 Anchor bolt assembly |
| 06/03/1986 | US4592687 Roof bolt |
| 05/28/1986 | EP0182777A1 Nail |
| 05/28/1986 | EP0182734A1 Nail |
| 05/28/1986 | EP0182565A1 Anchoring bolt |
| 05/20/1986 | US4589803 Method and apparatus for installing mine roof supports |
| 05/20/1986 | US4589501 For inserting friction rock stabilizers in earth bores |
| 04/10/1986 | WO1986002125A1 Tubular anchor |
| 03/19/1986 | CN85201938U Anchor pole with varifying diameter pipe and wedge |
| 03/18/1986 | US4576524 Rock anchor arrangement |
| 03/18/1986 | CA1201896A1 Method and apparatus for reinforcing and consolidating earth structures |
| 03/11/1986 | US4575294 Anchoring bolt |
| 01/14/1986 | US4564315 Method for anchoring a bolt in a rock-like structure |
| 12/24/1985 | US4560305 Yieldable connection |
| 12/17/1985 | CA1198101A1 Rock-bolt hanger |
| 12/17/1985 | CA1198007A1 Roof support pin |
| 12/10/1985 | US4557631 Expansion shell assembly |
| 12/10/1985 | CA1197716A1 Attachment assembly |
| 12/04/1985 | EP0163479A2 Ground control |
| 12/03/1985 | US4556350 Mine roof anchor bolt |
| 12/03/1985 | US4556344 Combination expansion shell and resin secured mine roof anchor assembly |
| 12/03/1985 | CA1197387A1 Yieldable connection |
| 11/26/1985 | CA1197120A1 Oblate friction rock stabilizer and installation lubricating cement utilized therewith |
| 11/05/1985 | CA1196201A1 Method and mechanism for preliminary anchoring of a wire rope bolt |
| 10/02/1985 | EP0156082A1 Method of anchoring for the backs and walls of underground galleries, and devices therefor |
| 09/03/1985 | US4538940 Arrangement for force transfer between longitudinally stressed members |
| 08/13/1985 | US4534795 Long shelf life cementitious anchoring capsule |
| 08/13/1985 | US4534680 Combination expansion shell and resin secured mine roof anchor assembly |
| 08/13/1985 | US4534679 Combination expansion shell and resin secured mine roof anchor assembly |
| 08/07/1985 | EP0150555A1 Cartridge for use in fixing an anchor bolt and method of using the cartridge |
| 07/23/1985 | US4530409 Offset driver accessory |
| 07/16/1985 | US4528792 Anchoring cartridges |
| 06/18/1985 | US4523881 Lateral force system and support for supporting mine roofs |
| 06/18/1985 | US4523880 Tie rod assembly for rock borehole anchor |
| 06/05/1985 | EP0143534A2 Mine roof support system |
| 06/05/1985 | EP0047311B1 Friction rock stabilizing device and method of supporting a mine roof using said device |
| 05/21/1985 | US4518292 Method and apparatus for combining resin bonding and mechanical anchoring of a bolt in a rock formation |
| 05/21/1985 | US4518290 Anchoring bolt |
| 05/21/1985 | US4518282 Mine roof bearing plate with embossed area having conical and cylindrical sections |
| 05/14/1985 | US4516886 Expansion anchor assembly for use on a threaded rod |
| 05/14/1985 | US4516885 Method and apparatus for combining resin bonding and mechanical anchoring of a bolt in a rock formation |
| 05/14/1985 | US4516883 Mine roof bolt mounting assembly |
| 05/02/1985 | EP0138866A1 Reinforcement of earth structures |
| 05/02/1985 | EP0034620B1 Resin-containing cartridges |
| 04/16/1985 | US4511296 Anchor bolt with mechanical keys deployed by internal pressurization |
| 04/16/1985 | US4511289 Method of rock bolting and rock bolt |
| 04/16/1985 | CA1185452A1 Reinforcing member for a grouted anchor |
| 04/09/1985 | US4509889 Method of rock bolting and tube-formed expansion bolt |
| 03/26/1985 | US4507020 Mine roof bearing plate |
| 03/12/1985 | US4504175 Stabilizing mine roofs-glass fiber reinforced thermosetting resin rods |