| Patents for E21C 25 - Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (2,629) |
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| 10/08/2013 | US8551233 Dust scrubber |
| 10/08/2013 | CA2639170C Mining machine with driven disc cutters |
| 10/03/2013 | US20130257137 Launch vehicle for a mining system, a mining system and a method for mining |
| 10/02/2013 | CN203223221U Shovel plate for heading machine |
| 10/02/2013 | CN103334747A Mining impacting-cutting combined rock breaking device |
| 09/26/2013 | WO2013140198A1 Cutting blade apparatus and methods |
| 09/25/2013 | CN102352750B Heading machine and star wheel external-teeth driving device for heading machine |
| 09/25/2013 | CN101942963B Vehicle hydraulic drill |
| 09/19/2013 | WO2013135076A1 Vibration damping device and engineering mechanical equipment |
| 09/19/2013 | US20130241263 Method And Apparatus For Auxilary Seafloor Mining |
| 09/18/2013 | CN203200802U High-efficiency multifunctional loader-digger with boring and rock drilling functions |
| 09/18/2013 | CN102364053B Heading-anchoring machine |
| 09/17/2013 | CA2638857C Reduced volume cutting tip and cutter bit assembly incorporating same |
| 09/12/2013 | US20130234495 Cold Planar Anti-Stabbing Mechanism |
| 09/11/2013 | CN203189015U Coal cutting rotary barrel of coal mining machine |
| 09/11/2013 | CN203189014U Vertical shearer with large inclination angle |
| 09/11/2013 | CN103299033A Tunneling machine |
| 09/11/2013 | CN103291292A Transverse telescopic cutting device for high-efficiency heading machine |
| 09/11/2013 | CN103291291A Rolling friction or suspension friction impact excavating method and antiabrasion impact excavator for implementing the same |
| 09/11/2013 | CN103290770A Chisel holder |
| 09/06/2013 | WO2013126944A1 A cutting drum and method of designing a cutting drum |
| 09/05/2013 | DE102012101719A1 Meißelhalter Toolholder |
| 09/04/2013 | CN203175562U Integrated excavator |
| 09/04/2013 | CN203175554U Coal mine tunneling machine with safety device |
| 09/04/2013 | CN203175553U Cutting unit of heading machine |
| 09/04/2013 | CN203175552U Telescopic device for cutting part of heading machine |
| 09/04/2013 | CN103277099A Heading machine and second conveyor connecting structure thereof |
| 09/04/2013 | CN103277095A Lump coal mining and cutting machine |
| 09/04/2013 | CN102797459B Cutting mechanism of excavating machine and excavating machine |
| 08/28/2013 | CN203161217U Cantilever excavator of airborne anchor machine pump station |
| 08/28/2013 | CN103266892A Continuous coal cutter |
| 08/28/2013 | CN103266891A Cutting part and continuous coal cutter |
| 08/28/2013 | CN103266890A Heading machine cutting head and heading machine |
| 08/21/2013 | CN203145936U Split cutting head of cantilever longitudinal axis heading machine |
| 08/15/2013 | US20130207443 Armored face conveyor |
| 08/14/2013 | CN103244117A Coal mining machine rocker arm with telescopic slotting mechanism |
| 08/14/2013 | CN103244116A Coal mining machine rocker arm with high lump coal rate |
| 08/07/2013 | CN203114286U Frequency control electric traction coal cutter without chain |
| 08/07/2013 | CN103233734A Efficient multi-function backhoe loader with hole and rock drilling function |
| 08/07/2013 | CN103233733A Coal cutter spiral roller |
| 08/07/2013 | CN103233732A Remote control and integration online monitoring intelligent cantilever excavator |
| 08/07/2013 | CN103233731A Coal cutting method with multiple demonstration knifes |
| 08/07/2013 | CN102345459B Cutting mechanism for heading machine |
| 08/06/2013 | US8500208 Coal cutter drum assembly |
| 07/31/2013 | CN203098602U Coal mining machine cutting portion roller connecting sleeve locating device |
| 07/31/2013 | CN203097892U Roadway periphery grooving machine |
| 07/31/2013 | CN203097891U Rocker type transverse drum shearer |
| 07/31/2013 | CN103225508A Coal cutter rocker arm |
| 07/24/2013 | CN203081439U Emulsion-driven low seam mining machine |
| 07/24/2013 | CN103216226A Water-jet cutting and impacting mining machine |
| 07/24/2013 | CN103216225A Heading machine cutting head and heading machine |
| 07/18/2013 | WO2013104023A1 Mining machine and hopper assembly for a mining machine |
| 07/17/2013 | CN203066962U Full-hydraulic drilling coal cutter for large cut width thin coal layer |
| 07/17/2013 | CN203066961U Heading machine and cutting part thereof |
| 07/17/2013 | CN103206213A Method for retaining vertical impact of impacting mechanism and vertical-lift impact-cutting digger implementing same |
| 07/17/2013 | CN102155219B Comprehensive dredging machine |
| 07/16/2013 | US8485608 Heading or extraction machine |
| 07/10/2013 | CN203050708U Mining multifunctional tunnelling machine |
| 07/10/2013 | CN203050697U Onboard detection drilling machine |
| 07/10/2013 | CN203050696U Hydraulic punching device |
| 07/10/2013 | CN203050695U Non-screw type cutting drum |
| 07/10/2013 | CN203050694U 1800 coal cutter roller sealing structure |
| 07/10/2013 | CN203050693U Dobby coal cutter with large mining height |
| 07/10/2013 | CN203050692U Drill loader |
| 07/10/2013 | CN203050691U Bidirectional material impacting device |
| 07/10/2013 | CN203050690U Vertical lifting and cutting mining machine |
| 07/10/2013 | CN103195428A Extra-thin coal seam bottom climbing type comprehensive exploitation technology |
| 07/10/2013 | CN103195420A Method for buffering reciprocating impact tunneling counter-acting force and buffering heading machine adopting the method |
| 07/03/2013 | CN203035199U Movable underground hydraulic punching device |
| 07/03/2013 | CN203035198U Underground hydraulic punching device with range being extended |
| 07/03/2013 | CN203035197U Crawler type double-shaft coal excavating machine |
| 07/03/2013 | CN203035196U Transverse rotary drum connection device of coal mining machine |
| 07/03/2013 | CN102392465B Multi-body discontinuous coal petrography cutting equipment |
| 06/26/2013 | CN203022739U Coal cutting machine for steeply-inclined coal layer, scraper conveyor and hydraulic bracket |
| 06/25/2013 | US8469458 Roller drill or roller bit |
| 06/20/2013 | US20130154341 Articulated shearer |
| 06/19/2013 | CN203009424U Control device for symmetrical telescoping stroke of cutting drum |
| 06/19/2013 | CN203008899U Mine block angle cutting saw |
| 06/19/2013 | CN103161461A Reciprocating mine cutting machine |
| 06/19/2013 | CN103161460A Articulated shearer |
| 06/12/2013 | CN202991029U Ultrathin coal seam high-power chainless hauled shearer |
| 06/12/2013 | CN202991028U Heading machine |
| 06/12/2013 | CN202991027U Mining tire-type hydraulic excavating drill carriage |
| 06/12/2013 | CN202991026U Telescopic cutting arm for heading machine |
| 06/12/2013 | CN101970795B Method for controlling longwall mining operations |
| 06/06/2013 | US20130140873 Reduced Volume Cutting Tip and Cutting Bit Incorporating Same |
| 06/06/2013 | US20130140870 Control system and method for road cutting machine |
| 06/05/2013 | CN202970715U Automatic miniature coal mining system suitable for model test |
| 06/05/2013 | CN103132997A Heading machine and transport machine for heading machine |
| 06/05/2013 | CN103132996A Large inclination angle vertical shearer |
| 05/30/2013 | WO2012058705A3 Tunneling machine |
| 05/29/2013 | CN202954813U Coal cutter helical drum for balancing axial thrust |
| 05/22/2013 | CN202946159U Shovel plate and continuous miner provided with same |
| 05/22/2013 | CN202946153U Mechanical saw-cutting mining platform |
| 05/22/2013 | CN202946152U Cutting-pick-adjustable roller of coal mining machine |
| 05/22/2013 | CN102094663B Machine-mounted multifunctional cantilever supporting machine |
| 05/15/2013 | CN202937263U Internal spraying device of drum-type coal winning machine |
| 05/15/2013 | CN202937260U Tumbling cylinder for coal mining machine |
| 05/15/2013 | CN102305069B Technology and equipment for separating coal and gangue and refilling gangue |
| 05/14/2013 | US8439451 Cooling a ranging arm gear case on a longwall shearer |