| Patents for E21C 27 - Machines which completely free the mineral from the seam (1,602) |
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| 06/09/1988 | DE3640826A1 Baseplate plough |
| 05/26/1988 | DE3639805A1 Shearer loader, in particular with perpendicular cutting drums |
| 05/25/1988 | EP0185713B1 Method and device for modifying the cross-section of a gallery, a tunnel or the like |
| 05/24/1988 | US4746170 Mining machinery |
| 05/19/1988 | DE3639133A1 Shearing machine movable on the face or goaf side of a face conveyor |
| 05/19/1988 | DE3638694A1 Mining winning machine |
| 05/04/1988 | CN87106278A Removing apparatus of guiding with protective hydraulic props |
| 04/26/1988 | US4740037 Continuous mining machine |
| 04/21/1988 | DE3634600A1 Shearer loader with cutting drums rotating about vertical or horizontal axes |
| 04/12/1988 | US4736808 Percussive tool with high pressure fluid jet |
| 04/07/1988 | DE3627205C1 Hydraulic self-advancing support assembly in combination with a winning apparatus circulating at the roof and floor |
| 03/24/1988 | DE3631266A1 Winning apparatus guided on hydraulic self-advancing support assemblies |
| 03/02/1988 | EP0257652A1 Method of and device for driving a coal winning gallery partly in the footwall of a seam |
| 02/25/1988 | DE3628737A1 Winning machine for underground mining |
| 02/25/1988 | DE3628180A1 Advancing and swivelling apparatus for a short-wall machine |
| 02/17/1988 | CN87105404A Excavating machine for driving mining of mine |
| 01/12/1988 | US4718731 Used for excavation work |
| 01/07/1988 | DE3622107A1 Plough system for underground extraction |
| 01/05/1988 | US4717206 For a mining machine |
| 12/29/1987 | US4715659 Mineral mining installations |
| 12/29/1987 | US4715658 Planing machine for the mining of minerals |
| 12/29/1987 | US4715657 For the extraction of coal |
| 12/23/1987 | CN87104712A Movable apparatus for open-pit mining |
| 12/09/1987 | EP0248189A1 Device for making a slit |
| 11/24/1987 | US4708396 Coal shaver |
| 10/22/1987 | WO1987006301A1 Open-cut mining cutter |
| 09/29/1987 | US4696600 Method and apparatus for modifying the cross-sectional profile of an adit, tunnel or the like |
| 09/23/1987 | CN87101751A Improvements in cutting machines |
| 09/22/1987 | US4695098 Excavator, particularly for continuous strip mining of minerals |
| 09/09/1987 | EP0236126A1 Improvements in cutting machines |
| 08/25/1987 | US4688855 Drift advancing or exploiting machine |
| 07/14/1987 | US4679856 Mine self-advancing roof support and method of relocating a mine winning face equipped with self-advancing roof support |
| 07/02/1987 | DE3545579A1 Machine body for a winning machine |
| 06/24/1987 | EP0226504A1 Shearing machine for mining |
| 06/23/1987 | CA1223281A1 Mining machine |
| 06/04/1987 | DE3620880C1 Hydraulic self-advancing support frame |
| 06/02/1987 | US4669786 Core breaker |
| 06/02/1987 | US4669560 Continuous mining machine |
| 05/26/1987 | US4668016 Mining machine with adjustable jib |
| 05/26/1987 | US4667790 Gearing units |
| 05/19/1987 | US4666336 Method of and apparatus for building thin lining on tunnel |
| 05/19/1987 | CA1221989A1 Cutting machine |
| 04/16/1987 | DE3534306A1 Method and arrangement for the strip winning of coal |
| 04/15/1987 | EP0218360A1 Combined AFC side discharge unit and integral cutter unit |
| 03/26/1987 | DE3528117C1 Apparatus for parting and loading seam-like outcrops of mineral raw materials |
| 03/18/1987 | CN86106048A Equipments of mine planer |
| 03/12/1987 | DE3531929A1 Chain-hauled shearer loader |
| 03/10/1987 | US4648660 Method and apparatus for mining machine cutter head |
| 03/04/1987 | CN86105316A Combined afc side discharge unit and integral cutter unit |
| 02/24/1987 | US4645265 Roller cutter loader for mine |
| 02/19/1987 | DE3528440A1 Pick arrangement, in particular for coal ploughs and the like |
| 02/18/1987 | CN85106341A Mining plough apparatus |
| 02/10/1987 | US4641889 Cutting machine |
| 01/28/1987 | CN85105816A Arranger with overload protection particularly suitable for coal ploughs |
| 01/20/1987 | US4637658 Cutters for use in mineral mining |
| 01/20/1987 | US4637268 Planer drive |
| 01/07/1987 | EP0207232A1 Cutting apparatus for an excavating machine |
| 01/02/1987 | DE3608785A1 Cutter arrangement, in particular for coal ploughs and the like |
| 11/04/1986 | US4620748 Method of and arrangement for loosening, loading and transporting of stratified minerals in underground elongated front longwalls |
| 10/29/1986 | CN85105397A Spiral and roll cutting mining machine |
| 10/29/1986 | CN85105391A Machine for tunnel excavation |
| 09/24/1986 | CN86101640A Excavating machine |
| 08/27/1986 | EP0192357A1 Mining machinery |
| 07/08/1986 | EP0150210A4 Continuous mining machine. |
| 07/02/1986 | EP0185713A1 Method and device for modifying the cross-section of a gallery, a tunnel or the like. |
| 07/02/1986 | CN85105390A Cleave cut beam mining machine |
| 06/24/1986 | US4596424 Continuous mining machine |
| 06/10/1986 | CA1205830A1 Mining machine |
| 05/20/1986 | US4589701 Cutting machine |
| 04/22/1986 | US4583785 Mineral winning plough |
| 04/15/1986 | CA1203098A1 Arrangement for supplying a pressurized liquid to a rotating machine part |
| 03/26/1986 | EP0175677A1 Cutter |
| 03/25/1986 | US4577892 Arrangement for supplying a pressurized liquid to a rotating machine part |
| 02/25/1986 | US4572583 Cutting head for drift advancing machines and process for producing same |
| 02/18/1986 | US4571004 Mechanism for controlling the elevation of a coal planer |
| 02/18/1986 | CA1200823A1 Cutting head for drift advancing machines |
| 02/04/1986 | US4568127 Cutting head for drift advancing machines |
| 01/21/1986 | US4565410 Apparatus for controlling the supply of high-pressure liquid to a cutter drum assembly |
| 01/03/1986 | WO1986000113A1 Method and device for modifying the cross-section of a gallery, a tunnel or the like |
| 12/24/1985 | CA1198456A1 Cutting head for drift advancing machines and process for producing same |
| 12/03/1985 | US4556257 Horizontal edna miner |
| 11/26/1985 | US4555142 Supply of liquid media for a hydraulic-mechanically operating mine working machine with sword |
| 11/05/1985 | US4550952 Mining machine with adjustable hood-scoop assembly |
| 11/05/1985 | US4550785 Hydraulic drive for actuating a tool |
| 10/22/1985 | US4548444 Mineral winning plough |
| 10/15/1985 | US4546849 Machine operators compartment |
| 08/07/1985 | EP0150210A1 Continuous mining machine. |
| 07/24/1985 | EP0149056A1 Movable drilling device |
| 05/21/1985 | CA1187517A1 Movable cutting machine |
| 05/14/1985 | US4516338 Gimbal mounted on frame with heavy metal plate sides |
| 05/07/1985 | CA1186704A1 Mining machine for extraction of minerals |
| 04/30/1985 | US4514012 Excavatory machine for use in coal and other mining opertions |
| 04/30/1985 | US4514011 Power and liquid supply system for mining machines |
| 04/02/1985 | US4508391 Mining machine for extraction of minerals |
| 03/20/1985 | EP0057711B1 Mineral winning machine and system |
| 03/19/1985 | US4505518 Mineral winning machines |
| 02/14/1985 | WO1985000636A1 Continuous mining machine |
| 02/06/1985 | EP0076799B1 Integrated cutter, breaker and haulage drive gearcase |
| 12/25/1984 | US4489985 Cutter drum extension latching mechanism |
| 12/18/1984 | US4488757 Plough mining installation |