| Patents for E21C 37 - Other methods or devices for dislodging with or without loading (1,249) |
|---|
| 07/27/1988 | CN87100252A Double-barrel pulse-generating hydraulic monitor |
| 07/06/1988 | CN86108271A Hydraulic pulse generator |
| 06/23/1988 | EP0221155A4 Method and apparatus for fragmenting a substance by the discharge of pulsed electrical energy. |
| 06/08/1988 | EP0270325A1 Excavating tooth assembly |
| 04/26/1988 | US4740036 Splitting apparatus and method |
| 04/13/1988 | CN87202177U High-pressure stone-splitter of steel column directional expansion |
| 03/23/1988 | CN87208739U Explosive device for breaking solid medium |
| 03/22/1988 | US4732510 Process for driving and cementing in ground anchors, apparatus and anchor bars for said process |
| 03/15/1988 | CA1234009A1 Method and apparatus for fragmenting asphalt |
| 02/23/1988 | CA1233162A1 Hydraulic rock breaking tool |
| 02/10/1988 | CN86104872A Cutting explosion method using special-shaped hole |
| 02/09/1988 | CA1232621A1 Process and apparatus for cutting rock |
| 01/26/1988 | US4721339 Rock crushing device and a method thereof |
| 01/19/1988 | US4719975 For demolishing structures such as concrete |
| 01/06/1988 | CN86104470A Method and apparatus for fragmenting substance by discharge of pulsed electrical energy |
| 01/05/1988 | US4717503 Demolition agent for brittle materials |
| 12/23/1987 | CN87104712A Movable apparatus for open-pit mining |
| 12/15/1987 | US4713115 Filling holes with clinker slurry and sintering |
| 12/09/1987 | EP0248610A1 Rock breaking method and tool |
| 12/08/1987 | US4711501 Rock crushing device |
| 11/19/1987 | EP0245572A2 Rock breaking apparatus |
| 11/18/1987 | CN87102228A Static crushing agent |
| 11/04/1987 | CN87200060U Support frame for strip explosive package for open mining |
| 10/21/1987 | EP0241475A1 A demolishing method and an agent for this |
| 10/13/1987 | CA1228081A1 Conveyor belt system for a continuous mining machine |
| 09/01/1987 | US4690460 Power unit |
| 09/01/1987 | US4690225 Percussive tool |
| 08/27/1987 | DE3605448A1 Apparatus for winning and extracting geological formations in underground working |
| 08/12/1987 | EP0231186A1 A device for fracturing stone, rock and the like |
| 07/28/1987 | CA1224817A1 Chainless feed system of mining cutter-loader |
| 07/28/1987 | CA1224816A1 Mining cutter-loader for winning minerals |
| 07/15/1987 | CN86205822U Rock cracking tool |
| 07/14/1987 | US4679857 Mounting frame for linear impact ripper assembly |
| 07/14/1987 | CA1224014A1 Method of, and apparatus for melting sulphur |
| 07/08/1987 | EP0227727A1 Expansible device applicable particularly to the wedging in constructions and works of civil engineering |
| 06/16/1987 | US4673043 Hammer having a protective cover |
| 06/16/1987 | EP0225415A1 Rock breaking or crushing device |
| 06/02/1987 | US4669783 Process and apparatus for fragmenting rock and like material using explosion-free high pressure shock waves |
| 05/20/1987 | EP0222185A1 Expansive demolition agent |
| 05/19/1987 | US4666336 Method of and apparatus for building thin lining on tunnel |
| 05/13/1987 | EP0221155A1 Method and apparatus for fragmenting a substance by the discharge of pulsed electrical energy |
| 04/23/1987 | WO1987002411A1 A demolishing method and an agent for this |
| 04/14/1987 | US4657306 Hydraulic rock breaking tool |
| 03/31/1987 | US4653697 Mining, well drilling |
| 02/04/1987 | CN86202119U Hydraulic elastic expansion fragmenting device |
| 02/03/1987 | US4640552 Method and apparatus for splitting ice masses |
| 01/27/1987 | CA1217210A1 Static expansive demolition agent in the three- dimensional form and process for demolishing brittle material using the same |
| 01/15/1987 | WO1987000227A1 Expansible device applicable particularly to the wedging in constructions and works of civil engineering |
| 12/02/1986 | US4626031 Apparatus for loosening and/or breaking coal deposits, rocks, granular or lumpy material, or scrap |
| 12/02/1986 | CA1214796A1 Tool and method for breaking rock and similar material |
| 11/25/1986 | US4624326 Process and apparatus for cutting rock |
| 11/20/1986 | WO1986006672A1 Operating device for breaking up rock material |
| 11/20/1986 | WO1986006652A1 Method and apparatus for fragmenting a substance by the discharge of pulsed electrical energy |
| 11/05/1986 | CN86102935A Cutting tool and method and apparatus for its production |
| 10/22/1986 | EP0094403B1 Rock breaking apparatus |
| 09/24/1986 | EP0160023A4 Inflatable cartridge assembly. |
| 09/17/1986 | EP0194347A1 Resilient mounting of a handles-carrying protective cover for a percussion tool |
| 08/05/1986 | US4604143 Demolition facilitating agent |
| 07/22/1986 | US4601251 Arrangement for orienting rockets moving in liquids |
| 07/15/1986 | US4600154 Static expansive demolition agent in the three-dimensional form and process for demolishing brittle material using the same |
| 07/01/1986 | US4597609 Method of melting sulphur |
| 05/28/1986 | EP0182510A1 Rock crushing device and method |
| 04/24/1986 | WO1986002404A1 A device for fracturing stone, rock and the like |
| 03/18/1986 | US4576240 Hydraulic impact device |
| 03/05/1986 | EP0091463B1 Underwater cutting torch |
| 02/18/1986 | US4571002 Hydraulic rock splitter |
| 01/28/1986 | US4566736 Apparatus for mechanically breaking up rock |
| 01/22/1986 | EP0168553A1 Method and apparatus for cutting rock |
| 01/21/1986 | US4565579 Nonexplosive chemical composition for gently breaking rock or concrete mass |
| 01/07/1986 | US4562974 Rock breaking apparatus |
| 12/04/1985 | EP0163147A2 Pressure generator |
| 11/06/1985 | EP0160023A1 Inflatable cartridge assembly |
| 11/05/1985 | US4550952 Mining machine with adjustable hood-scoop assembly |
| 10/09/1985 | EP0157286A1 Conveyor belt system for a continuous mining machine |
| 10/08/1985 | CA1194777A1 Underwater cutting tool |
| 10/02/1985 | EP0156789A1 Rock breaking tool |
| 10/02/1985 | EP0156673A1 Earth anchor driving and fastening method, device and anchor therefor |
| 08/06/1985 | US4533084 Method for comminuting bituminous coal using an aqueous methanol solution |
| 06/19/1985 | EP0145540A2 Method of cutting a solid compact material |
| 05/29/1985 | EP0142685A2 Jaws or shells for a hydraulically driven mechanical rock-splitting apparatus |
| 05/21/1985 | CA1187474A1 Method and tool for cleaving of rock |
| 05/02/1985 | EP0138899A1 Method for splitting, respectively crushing solid materials, such as rocks, ores, concrete blocs or similar materials |
| 04/16/1985 | CA1185623A1 Vibration-damping arrangement |
| 04/11/1985 | WO1985001545A1 Inflatable cartridge assembly |
| 03/26/1985 | US4506742 Vibrationless percussion tool |
| 03/12/1985 | CA1183909A1 Rf applicator for in situ heating |
| 02/26/1985 | CA1182991A1 Clay stabilization during oil and gas well cementing operations |
| 01/29/1985 | US4496191 Selective mining from horizontal holes |
| 01/09/1985 | EP0130608A1 Static expansive demolition agent and process for demolishing brittle materials |
| 01/08/1985 | CA1180578A1 Hammer drill or chipping hammer |
| 11/07/1984 | EP0094403A4 Rock breaking apparatus. |
| 10/23/1984 | US4478293 Hammer drill or chipping hammer |
| 10/16/1984 | US4477284 Demolition agent for demolishing brittle materials |
| 10/16/1984 | US4477060 Underwater cutting tool |
| 10/02/1984 | US4474410 Power-driven, wedge-operated rock splitter |
| 09/27/1984 | WO1984003760A1 Method for splitting, respectively crushing solid materials, such as rocks, ores, concrete blocs or similar materials |
| 09/25/1984 | CA1174864A1 Method of pressurizing and stabilizing rock by periodic and repeated injections of a settable fluid of finite gel strength |
| 08/21/1984 | US4466494 Implement with gripping arm assembly for a backhoe |
| 05/23/1984 | EP0109067A1 Process and apparatus for breaking up hard compact material |
| 05/22/1984 | US4449754 Device for breaking monolithic structures by pulsewise liquid pressure |