| Patents for E21C 25 - Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (2,629) |
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| 08/11/2005 | US20050173966 Non-rotatable protective member, cutting tool using the protective member, and cutting tool assembly using the protective member |
| 08/10/2005 | CN2716506Y Variable cross-section rectangular tunnel borer |
| 08/09/2005 | US6926368 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 07/28/2005 | WO2005068772A1 Holding wrench for rock drilling machine and rock drilling machine including such a holding wrench |
| 07/27/2005 | CN2712858Y Squeegee conveyor for coal mine comprehensive mining working face |
| 07/27/2005 | CN1646788A Oscillating disc cutter with speed controlling bearings |
| 07/27/2005 | CN1646787A Rock cutting machine |
| 07/21/2005 | US20050156460 Advance working or mining machine |
| 07/20/2005 | CN1643234A Auger flight support for plural auger coal mining systems |
| 07/19/2005 | US6918636 Coal and rock cutting pick |
| 07/07/2005 | US20050146199 Rotatable cutting tool for breaking hard material |
| 07/06/2005 | CN1635263A Braking device of coal winning machine |
| 06/30/2005 | US20050140200 Oscillating disc cutter with speed controlling bearings |
| 06/29/2005 | CN1632285A Unmanned down-hole coal excavating method for vertical shaft group |
| 06/02/2005 | WO2005049965A1 Boring rig |
| 06/01/2005 | CN1204331C Mining machine and mining method |
| 05/19/2005 | WO2005019540A3 Optimized kinetic energy machine for excavating underwater rock |
| 05/19/2005 | WO2003050391A8 Mining method for steeply dipping ore bodies |
| 05/11/2005 | CN2698979Y Stepping rectangular tunnel boring machine |
| 05/11/2005 | CN1614194A Drilling machine for actuating liquid and breaking rock by explosive explosion high-pressure gas |
| 05/10/2005 | US6890037 Cutting drum web deflector |
| 04/14/2005 | US20050077776 Reinforced concrete milling/cutting mandrel |
| 04/05/2005 | CA2167182C Highwall mining system |
| 04/05/2005 | CA2167181C Highwall mining system |
| 03/03/2005 | WO2005019540A2 Optimized kinetic energy machine for excavating underwater rock |
| 02/24/2005 | US20050040692 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 02/22/2005 | US6857706 Mining method for steeply dipping ore bodies |
| 02/22/2005 | US6857705 Mining machine and method |
| 02/09/2005 | EP1505213A1 Hydraulic milling device with flywheel |
| 02/09/2005 | CN2677615Y Coalcutter with stable device |
| 02/09/2005 | CN2677614Y Alternate entry-driving machine |
| 02/02/2005 | CN2675863Y Raw coal slot-cutting machine |
| 01/19/2005 | EP1497536A1 Oscillating disc cutter with speed controlling bearings |
| 01/19/2005 | EP1497534A1 Rock cutting machine |
| 01/19/2005 | CN1567696A Electromagnetic speed-regulating electrical haulage coal cutter |
| 01/11/2005 | US6840585 Rotary cutting head with water supply |
| 01/06/2005 | US20050000123 Cutting device for cutting trenches in the ground |
| 01/05/2005 | CN2668854Y Coal-mining machine set with airborne clear-water high-pressure dust-removing and high-regulating device |
| 01/05/2005 | CN2668853Y Brake apparatus for coal-production machine |
| 12/16/2004 | US20040253230 Methods of delaying development of CEA-associated tumors using anti-idiotype antibody 3H1 |
| 12/09/2004 | US20040245845 Shield system for coal mining |
| 12/09/2004 | US20040245843 Platform and driver for coal mining system |
| 11/11/2004 | WO2003050391A3 Mining method for steeply dipping ore bodies |
| 11/10/2004 | CN2654857Y Energy-saving pick for coal cutter |
| 11/04/2004 | WO2004035990A3 Automated excavation machine |
| 10/21/2004 | US20040207247 Automated excavation machine |
| 10/06/2004 | CN2646383Y Four-quadrant running alternating current frequency conversion electrical haulage shearer |
| 10/05/2004 | US6799809 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 09/23/2004 | WO2004081345A1 A mining lacing pattern |
| 09/01/2004 | EP1452686A1 Pick holder for bidirectional milling devices for building diaphragm walls |
| 09/01/2004 | CN1525015A Cutting device for cutting trenches in the ground |
| 09/01/2004 | CN1164859C Driving cutting device |
| 08/26/2004 | US20040164603 Cutting drum web deflector |
| 08/24/2004 | US6779850 Cutting apparatus having means for shielding cutting tool holders |
| 08/18/2004 | CN2634116Y Two section machine coal cutting machine |
| 08/11/2004 | EP1153200A4 Rock boring device |
| 08/05/2004 | WO2003069108A3 Auger flight support for plural auger coal mining systems |
| 07/21/2004 | EP1055033B1 Method for working through ground and rock layers with dredgers or excavators and apparatus operating according to this method |
| 07/01/2004 | US20040124691 Cutting roller for a continuously operating surface miner |
| 06/30/2004 | CN2622390Y Hydraulic speed regulator for cutting-mechanism |
| 06/29/2004 | US6755480 Drum-type dual channel water-jet assisted cutting head |
| 06/10/2004 | WO2004048753A1 Thermal rock fragmentation application in narrow vein extraction |
| 06/10/2004 | WO2004035990A9 Automated excavation machine |
| 06/09/2004 | CN2620088Y Raw coal cutting device |
| 06/03/2004 | DE10308539B3 Cutting device for cutting grooves in the ground comprises cutting elements arranged on the cutting wheels to remove soil using a rotary action |
| 05/26/2004 | CA2412792A1 Thermal rock fragmentation application in narrow vein extraction |
| 05/12/2004 | CN1496437A Mining and tunnelling device |
| 04/29/2004 | WO2004035990A2 Automated excavation machine |
| 04/29/2004 | CA2464558A1 Automated excavation machine |
| 04/22/2004 | DE10247352A1 Universal milling slotting boring tooling comprises radially tooled toolholder front powered via gearing and pulley or variably tooled for fullface boring with spoil removal without degradation. |
| 03/02/2004 | US6698843 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 02/25/2004 | EP1109988B1 Jet excavating device |
| 02/19/2004 | US20040032158 Auger flight support system |
| 01/20/2004 | US6679559 Auger flight support for plural auger coal mining systems |
| 01/15/2004 | DE20317107U1 Device used for drilling, especially in underground mining, comprises a drill rod assembly for connecting to a rotary drilling turbine and consisting of drill rods joined together |
| 01/14/2004 | EP0980464B1 Softwall mining method and device |
| 12/25/2003 | US20030234569 Coal and rock cutting pick |
| 12/24/2003 | WO2003106815A1 Disk bit, cutter head, and cutter drum |
| 12/24/2003 | WO2003106814A1 Roller cutter and cutter head of rock excavator |
| 12/24/2003 | CN2594463Y Small chain coal cutter |
| 12/24/2003 | CN2594462Y Drum coal-mining machines for low seam |
| 12/18/2003 | US20030230925 Cutter head and rock excavator |
| 12/04/2003 | DE10245394C1 Cutting roller for continuous open-cast mining device has mini-disc cutters fitted along counter-rotating transport screws extending between each end of roller mantle and its centre |
| 12/03/2003 | CN1129703C Method of raising exploitation efficiency in work area of coal mine |
| 11/25/2003 | US6652035 Highwall mining system |
| 11/19/2003 | EP1362163A1 A coal and rock cutting pick |
| 11/11/2003 | US6644753 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 11/05/2003 | EP0843774B1 Method for controlled fragmentation of hard rock and concrete by the combination use of impact hammers and small charge blasting |
| 10/30/2003 | WO2003089762A1 Oscillating disc cutter with speed controlling bearings |
| 10/30/2003 | WO2003089761A1 Rock cutting machine |
| 09/30/2003 | US6626500 Rotary drum cutting head |
| 09/30/2003 | CA2214695C Traction boring device using multiple trepans for producing large cuts in concrete works and the like and method of producing cuts |
| 09/24/2003 | CN1444688A Coal and rock cutting pick |
| 09/24/2003 | CN1443920A Directional drilling machine with continuous propelling wate jet flow |
| 09/18/2003 | US20030173819 Mining method for steeply dipping ore bodies |
| 09/17/2003 | EP1344894A1 Cutter head and rock excavator |
| 08/21/2003 | WO2003069108A2 Auger flight support for plural auger coal mining systems |
| 08/14/2003 | WO2003067022A1 A mining or tunnelling device |
| 08/14/2003 | WO2002012677A8 A coal and rock cutting pick |
| 08/14/2003 | US20030150648 Auger flight support for plural auger coal mining systems |