| Patents for E21C 25 - Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (2,629) |
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| 05/08/2013 | CN202926326U Complete equipment for automatic working surface of low coal seam shearer-loader |
| 05/08/2013 | CN202926325U Alternative-current traction coal mining machine of thin coal seam |
| 05/08/2013 | CN103089260A Pounding and shoveling coal cutter crushing mechanism |
| 05/08/2013 | CN103089258A Full hydraulic drilling type coal mining machine for thin coal seam with large mining width |
| 05/08/2013 | CN103089257A Water jet mining machine |
| 05/08/2013 | CN103089256A Water cutting falling coal mining method and water cutting falling coal mining machine |
| 05/08/2013 | CN102230378B Digging and drilling integrated machine |
| 05/02/2013 | WO2013062871A2 Horizontal borehole mining system and method |
| 05/02/2013 | US20130106166 Horizontal Borehole Mining System and Method |
| 05/01/2013 | CN202914095U Connecting structure for cantilever type tunneller cutterhead and intermediate device |
| 05/01/2013 | CN103075155A Steeply inclined coal seam fully-mechanized mining method and supporting facilities |
| 05/01/2013 | CN103075152A Drill loader |
| 05/01/2013 | CN101967990B Hydraulic support with excavating function |
| 04/25/2013 | DE112011102216T5 Zum Zulassen einer Werkzeugrotation konfigurierte Schneidanordnung To allow a tool rotation configured cutting assembly |
| 04/24/2013 | CN202900275U High reliability rocker arm of coal mining machine |
| 04/24/2013 | CN202900274U Longitudinal and transverse cutting type thin coal seam lump coal mining machine |
| 04/24/2013 | CN202900273U Coal cutter rocker arm with internal planet carrier connecting splines |
| 04/24/2013 | CN103061756A Rotary drum shearer and rocker arm thereof |
| 04/18/2013 | US20130093236 Demountable Pin and Collet Assembly and Method to Securely Fasten a Ranging Arm to a Longwall Shearer Using Such Assembly |
| 04/17/2013 | CN202882911U Driving-bolting machine with integrated driving-bolting drill |
| 04/17/2013 | CN202882910U Cutting mechanism for multi-arm hob type continuous digging machine |
| 04/17/2013 | CN202882909U Impact translation-type tunnelling machine |
| 04/17/2013 | CN103046927A Deflectable cutting device of coal mining machine |
| 04/17/2013 | CN103046926A Heading machine and split cutting head thereof |
| 04/16/2013 | CA2680566C Vibratory milling machine having linear reciprocating motion |
| 04/11/2013 | DE102011054386A1 Sicherungselement für einen Schaftmeißel A security element for a shank chisel |
| 04/10/2013 | CN202867386U Drill loader hydraulic anti-jamming control system |
| 04/10/2013 | CN202866651U Narrow-body full hydraulic anchor bolt anchor cable drill carriage for coal mine tunnel |
| 04/10/2013 | CN103032067A Non-spiral cutting drum |
| 04/10/2013 | CN103032066A Slow turning drum for a miner |
| 04/10/2013 | CN102418521B Method and equipment for clearing baseplates of return airway of ultra-large mining height working face |
| 04/10/2013 | CN101871364B Remote control method and device of thin seam working surface coal mining machine |
| 04/04/2013 | WO2013048974A1 Device machining materials by milling or drilling, and method therefor |
| 04/04/2013 | US20130082510 Slow turning drum for a miner |
| 04/04/2013 | DE102011114589A1 Mobile mining machine for driving e.g. tunnels into hard rock in tunnel mining application, has supporting arm and swinging base connected to each other by guide bars to adjust setting angle of drum axis in relation to swing axis |
| 04/04/2013 | CA2849967A1 Device for machining materials by milling or drilling, and method therefor |
| 04/03/2013 | CN202850993U Cutting arm of heading machine |
| 04/03/2013 | CN103016004A Buffering guide method by reciprocating impact reactive force and vibration isolation mining machine |
| 04/03/2013 | CN103016000A Mobile underground hydraulic punching device |
| 04/03/2013 | CN103015999A Clipping part and development machine |
| 04/03/2013 | CN101881166B Mining device and walking device thereof |
| 04/03/2013 | CN101845952B Movable three-arm top-assisting anchor rod and anchor cable construction drill carriage |
| 04/03/2013 | CN101798925B Cutting head type shortwall coal-winning machine and comprehensive mechanized coal mining technology |
| 03/30/2013 | CA2791038A1 Slow turning drum for a miner |
| 03/27/2013 | CN202833873U Planetary mechanism of drum shearer |
| 03/27/2013 | CN202832532U Multifunctional rotary drum device of thin coal seam coal cutter |
| 03/27/2013 | CN202832531U Coal cutter rocker arm applicable to thin coal seam mining |
| 03/27/2013 | CN202832530U Heading machine and cutting portion thereof |
| 03/27/2013 | CN202832529U Coal mining equipment |
| 03/27/2013 | CN202832528U Cantilever type electric traction coal cutter |
| 03/27/2013 | CN202832527U Cutting device for coal mining equipment |
| 03/27/2013 | CN102996130A Automatic micro-coal extraction system suitable for model test |
| 03/27/2013 | CN102996128A Spraying device in coal mining machine |
| 03/27/2013 | CN102996124A Underground hydraulic punching device with lengthened range |
| 03/27/2013 | CN102996123A Bidirectional material impacting method and bidirectional material impacting device |
| 03/20/2013 | CN202810864U Loading and transporting mechanism and drill loader |
| 03/20/2013 | CN202810848U Variable-frequency heading machine |
| 03/20/2013 | CN202810847U 掘进机 Boring Machine |
| 03/20/2013 | CN202810846U Excavating equipment |
| 03/20/2013 | CN202810845U Comprehensive mechanization rock gangway dig-anchor machine |
| 03/20/2013 | CN202810844U In-hole anchoring guiding device |
| 03/20/2013 | CN102979521A Rocker-type transverse shearer |
| 03/20/2013 | CN102975292A Multi-layer soldering diamond string bead |
| 03/19/2013 | US8398176 Asphalt milling attachment with depth control and bit access |
| 03/13/2013 | CN202788844U Height adjusting system of variable frequency speed-regulating chainless electric traction coal mining machine |
| 03/13/2013 | CN202788840U Drilling and packing all-in-one machine |
| 03/13/2013 | CN202788839U Cutting device driven by permanent-magnet machine for comprehensive mechanical rock roadway driving anchor winch |
| 03/13/2013 | CN202788838U Cutting and wedging vibrating type operating mechanism for tunneling machines and coal mining machines |
| 03/13/2013 | CN202788837U Crushing mechanism for fully mechanized coal mining face coal-mining machine |
| 03/13/2013 | CN202788836U Cutting part structure of variable frequency speed-regulating chainless electric traction coal mining machine |
| 03/13/2013 | CN202788835U Transmission system of variable frequency speed-regulating chainless electric traction coal mining machine |
| 03/13/2013 | CN102971492A Cutter assembly configured to allow tool rotation |
| 03/07/2013 | US20130057045 Pulsed Water-Jet Apparatus |
| 03/07/2013 | US20130057044 Mining machine with driven disc cutters |
| 03/06/2013 | CN202767981U Rotary drum and cutting head combined short-arm large-cutting-height coal cuter |
| 03/06/2013 | CN202767980U Connecting device for first transport machine of heading machine to directly hook reversed loader |
| 03/06/2013 | CN202767979U Heading machine and shovel plate portion device |
| 03/06/2013 | CN202767978U Rotatable telescopic cutting device of comprehensive mechanical rock lane tunneling unit |
| 03/06/2013 | CN102953730A Cutting pick-adjustable shearer drum |
| 03/06/2013 | CN102953729A Cutting mechanism for multi-arm hob-type continuous tunneling machine |
| 03/06/2013 | CN102953728A Split type cutting device of coal cutter |
| 02/27/2013 | CN102947542A Continuous surface mining system |
| 02/27/2013 | CN102943847A Incomplete gearbox cutting reversing device |
| 02/27/2013 | CN102943672A Automatic repaired hard-rock heading machine coal mining machine electric control device |
| 02/27/2013 | CN101523014B Thick pointed superhard material |
| 02/26/2013 | US8386196 Method for determining the wear state |
| 02/20/2013 | CN202745867U Coal mining machine with water-jet cutter |
| 02/20/2013 | CN202745866U Water-jet cutting and impacting mining machine |
| 02/20/2013 | CN102939434A Advancing longwall system for surface mining |
| 02/20/2013 | CN101832130B Surface real-time processing of downhole data |
| 02/14/2013 | US20130038114 Self-propelled surface milling cutter |
| 02/13/2013 | CN202731913U Wedge type cutting tooth rolling cylinder of coal mining machine |
| 02/13/2013 | CN202731912U End plate, coal cutter drum and coal cutter |
| 02/13/2013 | CN102927071A Hydraulic anti-jamming control system for drill loader |
| 02/13/2013 | CN102926749A Tunneling machine |
| 02/13/2013 | CN102926748A Double-cutterhead double-transverse-cylinder full-face tunneller |
| 02/13/2013 | CN102022122B Support-type comprehensive tunneler |
| 02/11/2013 | DE202011051897U1 Schlauch zur Führung von Fluiden Hose for conducting fluids |
| 02/07/2013 | US20130033091 Milling rotor for processing ground material and a ground milling machine having such a rotor |
| 02/07/2013 | US20130033090 Automated stop and shutdown operation of a mining machine |