| Patents for E21C 37 - Other methods or devices for dislodging with or without loading (1,249) |
|---|
| 05/16/1984 | EP0108519A2 Method and apparatus for fracturing rock |
| 05/15/1984 | CA1167316A1 Blasting installation including guided carriage with drilling and explosing loading means |
| 04/03/1984 | US4440237 Pavement breaker |
| 03/21/1984 | EP0103194A1 Demolition agent for brittle materials |
| 02/22/1984 | EP0100978A1 Hydraulically actuated device for shattering rock |
| 12/20/1983 | US4421181 Vibration-damping arrangement |
| 11/23/1983 | EP0094403A1 Rock breaking apparatus. |
| 10/19/1983 | EP0091463A1 Underwater cutting torch. |
| 10/11/1983 | US4409030 Material for destroying concrete structures |
| 08/09/1983 | CA1151679A1 Device for breaking a hard material |
| 07/26/1983 | US4395163 Mining appliance |
| 07/19/1983 | US4394051 Method of hydrospalling |
| 07/19/1983 | US4393939 Clay stabilization during oil and gas well cementing operations |
| 06/09/1983 | WO1983001977A1 Rock breaking apparatus |
| 04/28/1983 | WO1983001480A1 Underwater cutting torch |
| 04/12/1983 | CA1144302A1 Powder actuated piston tool with power adjustment |
| 04/05/1983 | US4378997 Hydration-expansive crushing cartridge |
| 02/22/1983 | US4374567 Powder actuated piston tool with power adjustment |
| 02/09/1983 | EP0070856A1 Rock-scaling device |
| 02/08/1983 | CA1140948A1 Demolition agent, its preparation and its use |
| 01/25/1983 | US4370077 Method of pressurizing and stabilizing rock by periodic and repeated injections of a settable fluid of finite gel strength |
| 01/05/1983 | EP0068300A2 Device for the course stabilization of a rocket moving in a liquid medium |
| 12/15/1982 | EP0066779A1 Boring or chiseling hammer |
| 12/14/1982 | US4363518 Method and apparatus for fracturing rock beds |
| 12/14/1982 | US4363451 Device for breaking a hard material |
| 12/14/1982 | CA1137416A1 Drilling and chipping hammer with internal combustion engine drive |
| 11/30/1982 | CA1136652A1 Demolition agent for brittle materials |
| 11/23/1982 | CA1136118A1 Combined impact and pressure liquid rock drill |
| 10/19/1982 | US4354877 Demolition agent, its preparation and its use |
| 10/12/1982 | US4353426 Percussive tools |
| 09/21/1982 | US4350392 Coal extraction in a longwall working |
| 08/19/1982 | WO1982002738A1 Rock-scaling device |
| 08/10/1982 | US4343368 Idle stroke braking unit for an impact device |
| 08/04/1982 | EP0057166A2 Vibration-damping arrangement |
| 06/01/1982 | CA1124591A1 Percussive pneumatic impact device |
| 05/11/1982 | CA1123462A1 Rock breaker |
| 04/06/1982 | CA1121155A1 Hammer for breaking strong abrasive materials |
| 02/23/1982 | US4316583 Demolition agent for brittle materials |
| 02/23/1982 | CA1118689A1 Internal combustion engine driven drilling and chipping hammer |
| 01/19/1982 | US4311343 Apparatus for breaking rock or concrete |
| 12/15/1981 | CA1114405A1 Method and device for breaking hard compact material such as rock |
| 12/15/1981 | CA1114249A1 Motor-driven hammer drill |
| 12/08/1981 | CA1113832A1 Demolition tool for breaking solid materials |
| 11/24/1981 | US4301731 Air shooting system for the mining of coal or the like |
| 11/10/1981 | US4299293 Percussive tool angular position device |
| 09/22/1981 | US4290496 Combination impact and pressure liquid rock drill |
| 09/15/1981 | US4289275 Method and device for breaking a hard compact material |
| 07/28/1981 | US4280572 Chisel for a percussive tool |
| 05/19/1981 | CA1101371A1 Chemical comminution of coal with so.sub.2 |
| 05/13/1981 | EP0028513A1 A method of demolition and method of preparing a demolition agent |
| 05/12/1981 | US4266827 Incompressible fluid type rock breaker |
| 04/29/1981 | EP0027784A1 A device for breaking a hard material |
| 04/28/1981 | US4264107 Demolition tool for breaking solid materials |
| 04/28/1981 | CA1099917A1 Fluid operated wall groove cutter |
| 03/17/1981 | US4256145 Impact type tools |
| 03/03/1981 | US4253704 Method and apparatus for disintegrating a material |
| 03/03/1981 | CA1096849A1 Rock splitting attachment for a breaking hammer |
| 02/24/1981 | US4252375 Wear or thrust plates for hydraulic rock splitting apparatus |
| 02/24/1981 | CA1096370A1 Hydraulically actuated tool for mechanically splitting rock-like material |
| 02/17/1981 | US4251113 Hammer for breaking strong abrasive materials |
| 02/03/1981 | CA1095093A1 Method and device for breaking a hard compact material |
| 01/06/1981 | US4243107 Hydraulic hammer mounted on a movable boom |
| 11/25/1980 | CA1090379A1 Method and device for breaking hard compact material such as rock |
| 11/25/1980 | CA1090378A1 Method and device for breaking a hard compact material |
| 11/18/1980 | CA1089883A1 Method of mining flat-dipping and sloping beds of a mineral with hydraulic excavation |
| 10/29/1980 | EP0018272A1 Power controlled stud-driving tool |
| 10/15/1980 | EP0017398A1 Demolition agent, its preparation and its use |
| 09/18/1980 | WO1980001931A1 Process and apparatus for pulverizing base rock |
| 09/16/1980 | US4222443 Motor-driven hammer drill |
| 09/02/1980 | CA1084898A1 Wear or thrust plates for hydraulic rock splitting apparatus |
| 08/21/1980 | WO1980001665A1 Pneumatic percussion machine |
| 08/05/1980 | US4215901 Hydraulically actuated tool for mechanically splitting rock-like material |
| 05/27/1980 | US4204715 Method and device for breaking a hard compact material |
| 05/20/1980 | US4203625 Apparatus for sulfur melting by lateral displacement of heating element |
| 05/06/1980 | CA1077014A1 Method and apparatus for breaking hard compact material such as rock |
| 04/30/1980 | EP0010413A1 A rock breaker |
| 04/16/1980 | EP0010075A1 A demolition tool for breaking solid materials |
| 04/15/1980 | US4198291 Float-sink separation of coal with liquid SO2 |
| 04/15/1980 | CA1075675A1 Hydraulically actuated tool for mechanically splitting rock-like material |
| 04/01/1980 | US4195885 Method and device for breaking a hard compact material |
| 03/25/1980 | CA1074083A1 Method of and apparatus for melting block sulphur |
| 02/26/1980 | US4190293 Rock splitting attachment for a breaking hammer |
| 02/26/1980 | CA1072587A1 Method and device for breaking a hard compact material |
| 02/19/1980 | CA1072006A1 Induction heating of coal in situ |
| 02/05/1980 | CA1071094A2 Subterranean drilling and slurry mining |
| 01/29/1980 | CA1070610A2 Subterranean drilling and slurry mining |
| 11/14/1979 | EP0005347A1 Attachment for a breaking hammer |
| 11/13/1979 | CA1066310A1 Method of extracting coal |
| 11/13/1979 | CA1066185A1 Extraction from underground coal deposits |
| 10/16/1979 | CA1064464A1 Method and apparatus for breaking a hard compact material such as rock or concrete |
| 10/16/1979 | CA1064224A1 Sulfur melting by lateral displacement of heating element |
| 10/09/1979 | CA1063930A2 Subterranean mining apparatus and method |
| 09/25/1979 | US4168862 Wear or thrust plates for hydraulic rock splitting apparatus |
| 09/11/1979 | US4167292 Method of using a low temperature freezing softening and abrasion fluid |
| 09/11/1979 | CA1062153A2 Subterranean mining apparatus and method |
| 07/26/1979 | WO1979000471A1 Method for blasting rock |
| 05/22/1979 | US4155287 Hydraulically operated impact devices |
| 05/01/1979 | US4152028 Expansible apparatus for removing the surface layer from a concrete object |
| 03/20/1979 | CA1051042A1 Method and device for breaking hard compact material |
| 02/27/1979 | US4141592 Method and device for breaking hard compact material |