| Patents for E21C 25 - Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (2,629) |
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| 02/07/2013 | US20130033089 Material handling system for mining machine |
| 02/07/2013 | US20130033088 Automated pre-tramming operation of a mining machine |
| 02/07/2013 | US20130033087 Automated cutting operation of a mining machine |
| 02/07/2013 | US20130033086 Automated find-face operation of a mining machine |
| 02/07/2013 | US20130033085 Stabilization system for a mining machine |
| 02/06/2013 | CN102913243A Coal mining equipment and rocker thereof |
| 01/30/2013 | CN202707051U Adjustable coal blocking device and coal mining machine |
| 01/30/2013 | CN102900362A Narrow-machine-body full-hydraulic bolt and anchor cable drill carriage for coal mine tunnel |
| 01/23/2013 | CN202690062U Diesel powered full hydraulic continuous stripping machine |
| 01/23/2013 | CN202690046U Multifunctional coal loader |
| 01/23/2013 | CN202690045U Comprehensive mechanized rock drift heading machine |
| 01/23/2013 | CN202690044U Comprehensive mechanized rock roadway tunneling unit |
| 01/23/2013 | CN202690043U Swinging cutting mechanism of single-drum coal mining machine |
| 01/23/2013 | CN202688838U Construction machinery or mining machinery for performing operation on preset area |
| 01/23/2013 | CN101832131B Surface real-time processing of downhole data |
| 01/17/2013 | US20130015696 Hydraulic resonant breaking hammer |
| 01/16/2013 | CN202673291U Coal mining machine rocker arm height adjusting mechanism |
| 01/16/2013 | CN202673290U Double-cantilever hard rock coal roadway tunneling anchor device |
| 01/16/2013 | CN202667498U Forming mould for lengthened drum |
| 01/16/2013 | CN102877840A Coal mining equipment |
| 01/09/2013 | CN102865074A Roller and cutting head compound short-arm large-mining-height coal mining machine |
| 01/09/2013 | CN102865073A Crushing machine for cutting pick cylinder |
| 01/09/2013 | CN102865072A Eight-meter large-mining-height coal mining machine |
| 01/09/2013 | CN102182477B Mining method for mechanized mining working surface end and corresponding end support bracket |
| 01/09/2013 | CN101796263B Roller drill or roller bit |
| 01/03/2013 | US20130002004 Mining and demolition tool |
| 01/03/2013 | US20130000991 Systems and methods to reduce oscillations in magnetic couplings |
| 01/02/2013 | EP2540402A2 Method and apparatus for prepping surfaces with a high-frequency forced pulsed waterjet |
| 01/02/2013 | EP2540401A2 Method and apparatus for prepping surfaces with a high-frequency forced pulsed waterjet |
| 01/02/2013 | CN202645557U Loading device for digging anchor machine |
| 01/02/2013 | CN202645556U Dust collector for fully-mechanized coal winning machine |
| 01/02/2013 | CN202645555U Fully-sealed coal roadway heading-anchoring synchronizer |
| 01/02/2013 | CN202645554U Double-round-cutterhead coal roadheader |
| 01/02/2013 | CN202645553U Built-in type cutting transmission device for anchor all-in-one machine |
| 01/02/2013 | CN202645552U Rocking arm of coal cutter |
| 01/02/2013 | CN102853023A Cutting unit of coal mining machine and coal mining machine |
| 01/02/2013 | CN102852518A Coal cutter roller |
| 01/02/2013 | CN101915096B Development machine |
| 12/27/2012 | WO2012174923A1 Hard rock tunneling machine |
| 12/26/2012 | CN202628091U Connection reinforcement device for trough of scraper rock loading machine |
| 12/26/2012 | CN202628090U Warehouse storage type belt transport machine |
| 12/26/2012 | CN202628089U Special-shaped spiral drum |
| 12/26/2012 | CN102839975A Hardrock tunneling machine |
| 12/26/2012 | CN102839974A Drilling and loading integrated machine |
| 12/26/2012 | CN102839973A Cutting head structure used for heading machine and heading machine |
| 12/20/2012 | US20120319451 Launch vehicle for a mining system, a mining system and a method for mining |
| 12/19/2012 | CN202611757U Nose support of scraper conveyor |
| 12/19/2012 | CN202611700U Shoveling plate assembly of heading machine |
| 12/19/2012 | CN202611699U Sliding rotary device of cutting-head type shortwall large mining height coal mining machine |
| 12/19/2012 | CN202611698U Main height adjusting arm for composite-height-adjusting-type coal mining machine with small rotary drum and large mining height |
| 12/19/2012 | CN202611697U Comprehensive mechanical rock roadway heading machine |
| 12/19/2012 | CN202611695U Novel rectangular coal roadway quick driving and bolting all-in-one machine |
| 12/19/2012 | CN202611694U Extensible boom of road header |
| 12/19/2012 | CN202611693U Combined type cantilever heading machine |
| 12/18/2012 | US8333435 Holder for holding a tooth on a body of a cutting blade or grinding drum for cutting or grinding rock or hard earth formations |
| 12/12/2012 | CN202596732U Chained mechanism for cutting, slotting and raking bottom layer of ore rocks |
| 12/12/2012 | CN102817304A Method and device for determining an area cut with a cutting roll by at least one construction machine or mining machine |
| 12/11/2012 | US8328292 Mining machine with driven disc cutters |
| 12/05/2012 | CN202578682U Heading machine second conveyer rotation structure and heading machine |
| 12/05/2012 | CN202578681U Comprehensive rock roadway driving system |
| 12/05/2012 | CN202578680U Coal cutter rocker and coal cutter |
| 12/05/2012 | CN202578679U Double-motor U-shaped cutting part of thin-coal-seam coal mining machine |
| 12/05/2012 | CN202578678U Heading machine provided with winch |
| 12/05/2012 | CN102808617A Comprehensive mechanical stone drift digging anchor machine |
| 12/05/2012 | CN101663461B Rock sampling apparatus |
| 11/29/2012 | US20120298004 Mining vehicle and method for its energy supply |
| 11/28/2012 | CN202560223U Locking suspending connection structure of main side shoveling plate of tunneling machine |
| 11/28/2012 | CN202560218U Helical turbine cylinder used for coal winning machines |
| 11/28/2012 | CN202560217U Cutting head type short wall large mining height coal cutter loading device |
| 11/28/2012 | CN202560216U Cutting head type short wall large mining height coal mining machine |
| 11/28/2012 | CN202560215U Large mining height coal mining machine having superposed arms and three drums |
| 11/28/2012 | CN202560214U Anchor-rod development machine |
| 11/28/2012 | CN102797798A Planetary mechanism of drum coal shearer |
| 11/28/2012 | CN102797460A Tangent-wedge vibration-type operating mechanism, tangent-wedge vibration-type heading machine and tangent-wedge vibration-type coal cutter |
| 11/28/2012 | CN102797459A Cutting mechanism of excavating machine and excavating machine |
| 11/27/2012 | CA2547707C Holding wrench for rock drilling machine and rock drilling machine including such a holding wrench |
| 11/22/2012 | WO2012155531A1 Technology and equipment for separating coal and gangue and refilling gangue. |
| 11/22/2012 | DE102011050387A1 Mobile mining machine for excavation of tunnels in hard rock, has support arm and swivel base that are connected by trapezoidal four-bar linkage system formed handlebar system for adjusting angle of drum axis relative to pivot axis |
| 11/21/2012 | CN202543781U Construction machine or mining machine and drum shell of working drum therefor |
| 11/21/2012 | CN101684730B Rotary cutting bit |
| 11/20/2012 | CA2699807C Roller drill or roller bit |
| 11/14/2012 | CN102777184A Mining system and method of mines |
| 11/14/2012 | CN102777175A Full hydraulic multi-blade-saw lump coal mining machine |
| 11/14/2012 | CN102777174A Multifunctional drum device of thin seam coal shearer |
| 11/14/2012 | CN102777173A Cantilever type electric traction coal cutter |
| 11/08/2012 | US20120280558 Foam Configured to Suppress Dust on a Surface to be Worked |
| 11/08/2012 | DE112010001564T5 Halteanordnung für eine Schneidspitze Support assembly for a cutting tip |
| 11/07/2012 | CN202520310U Connecting structure for tunneling machine and transferring machine |
| 11/07/2012 | CN202520309U Parallel rapid bolt supporting operation system for heading machine |
| 11/07/2012 | CN202520308U Mechanical single arm type hydraulic anchor rod drilling machine |
| 11/07/2012 | CN202520307U Automatic electric traction device of coal mining machine |
| 11/07/2012 | CN102770621A Launch vehicle for a mining system, a mining system and a method for mining |
| 11/07/2012 | CN102767370A Integrated high-pressure abrasive jet joint-cutting and drilling coal seam tunnel boring machine |
| 11/07/2012 | CN102767369A Cutting mechanism of heading machine |
| 11/07/2012 | CN101775986B Process for mining thin coal seam containing ferric sulfide nodule and hard dirt band and fully mechanized mining hydraulic support thereof |
| 10/31/2012 | CN202510120U Automatic integrated control system for thin coal seam shearer working surface |
| 10/31/2012 | CN202510117U Small space apex distance strong climbing bottom plate coal cutter |
| 10/31/2012 | CN102758623A Cutting head of mixed cutter |
| 10/31/2012 | CN102200011B Cutting head type short wall coal mining machine |
| 10/25/2012 | US20120267940 Material guide assembly |