| Patents for E21C 35 - Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups , or (6,127) |
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| 03/23/2011 | CN201771505U Shoveling board part device of tunneller |
| 03/23/2011 | CN201771504U Pickholder component used for development machine |
| 03/23/2011 | CN201771503U Wireless remote control communication state real-time monitoring system of coal mining machine |
| 03/23/2011 | CN201771502U Coal mining machine water and electricity locking device |
| 03/23/2011 | CN201771501U Coal mining machine hinging tension device |
| 03/23/2011 | CN201771500U Dustproof sealing structure |
| 03/23/2011 | CN201771491U Cutting mechanism of tunneling machine |
| 03/23/2011 | CN101358528B Roadheader with remote control member |
| 03/23/2011 | CN101280683B Coal excavating mining pick inlaid with diamond and manufacturing process thereof |
| 03/17/2011 | WO2010091814A3 Method for controlling the cutting depth of shearers |
| 03/16/2011 | CN201763344U Coal mining device and spraying system thereof |
| 03/16/2011 | CN201763343U Spray device and coal winning machine |
| 03/16/2011 | CN201763342U Spraying device of tunneling machine |
| 03/16/2011 | CN201763341U Cutting teeth device used in mining |
| 03/16/2011 | CN201763340U Coal mining machine cutting tooth |
| 03/16/2011 | CN201763339U Fixing apparatus for guide wheels of pickers |
| 03/16/2011 | CN201763338U Coal mining machine starting system |
| 03/16/2011 | CN201763337U Swiveling mechanism bearing device of second conveyor of tunneling machine |
| 03/16/2011 | CN201763334U Coal mining machine and mining height system thereof |
| 03/16/2011 | CN201763331U Heading machine |
| 03/16/2011 | CN201763330U Cutting head device of heading machine |
| 03/16/2011 | CN101985878A Tunnel mining machine |
| 03/16/2011 | CN101985877A High pressure water jet cutting drum coal dropping double power shearer |
| 03/09/2011 | EP2291565A1 Road grading pick with washer |
| 03/09/2011 | CN201756959U Mixed cutting teeth coal mining machine drum |
| 03/03/2011 | US20110049964 Method for Controlling Longwall Mining Operations |
| 03/01/2011 | US7896444 Conveyor pan with improved edge shaping |
| 03/01/2011 | US7896443 Ore extraction using combined blast and thermal fragmentation |
| 02/24/2011 | WO2011020484A1 Method for producing a face opening using automation systems |
| 02/23/2011 | CN101979831A Adjusting bracket for dust removing device of road header |
| 02/17/2011 | DE202010013033U1 Spitzhackenförmiger Schneidmeißel Pickaxe shaped cutting bit |
| 02/17/2011 | DE102007047215A1 Mountain cutting tool useful as chisels and drill bits for mining extraction machines, comprises carbide cutting inserts, where the tool is produced by casting in a casting mold with the target of increasing the wear resistance |
| 02/16/2011 | CN201747707U Cooling device of development machine |
| 02/16/2011 | CN201747376U Pen-shaped head press-in pick |
| 02/16/2011 | CN201747375U Wireless remote control communication state detection system for coal mining machine |
| 02/16/2011 | CN201747374U Split-type walking frame body for continuous miner |
| 02/16/2011 | CN201747373U Wear guiding slide shoe of additional wear plate for coal mining machine |
| 02/16/2011 | CN201747367U Opencut coal mine coal mining and stripping machine with adjustable roller height |
| 02/16/2011 | CN101975077A High-outburst coal mine coal roadway drilling-loading-bolting integrated machine |
| 02/16/2011 | CN101975069A Automatic telescopic crushing device for development machine |
| 02/16/2011 | CN101975063A Laser guided positioning and orientation device and method of roadheader |
| 02/16/2011 | CN101975062A Efficient cutter head |
| 02/16/2011 | CN101975061A Coal winning machine and mining height system thereof |
| 02/16/2011 | CN101463723B Water supply mechanism for cutter head shaft of development machine |
| 02/15/2011 | CA2459964C Method for restricting leakage of hydraulic oil in a rock drilling rig |
| 02/10/2011 | WO2011016765A1 Non-rotating washer for tool pick, tool and block assembly, method to reduce erosive wear and material removal machine |
| 02/10/2011 | CA2763729A1 Non-rotating washer for tool pick, tool and block assembly, method to reduce erosive wear and material removal machine |
| 02/09/2011 | CN201738925U Cutter bit |
| 02/09/2011 | CN201738924U Dual-power coal mining machine with seam-cutting high-pressure water jet flow and coal dropping roller |
| 02/09/2011 | CN201738921U Roadheader and floating sealing device of the same |
| 02/09/2011 | CN1828015B Tool holder block and sleeve retained therein by interference fit |
| 02/09/2011 | CN101970796A Method for automatically creating a defined face opening in plow operations in coal mining |
| 02/09/2011 | CN101967972A Mining equipment and spraying system thereof |
| 02/09/2011 | CN101555790B Internal spraying excavator which can reduce temperature with high efficiency |
| 02/09/2011 | CN101021152B Damping feed machine |
| 02/08/2011 | US7883155 Bit assemblies for road milling, mining and trenching equipment |
| 02/08/2011 | US7883154 Cutting tool with water injection to the cutting bit shank |
| 02/03/2011 | WO2011014217A1 Cutting tool with nozzle for spraying water on a cutter bit |
| 02/03/2011 | DE102009030130B3 Verfahren zur automatisierten Herstellung einer definierten Streböffnung durch neigungsgestützte Radarnavigation der Walze bei einem Walzenschrämlader und eine Vorrichtung hierfür Method for the automated production of a longwall opening defined by passion-based radar navigation of the roll at a shearer and an apparatus therefor |
| 02/02/2011 | CN201731173U Dragging cable clip of coal mining machine |
| 02/02/2011 | CN201730622U Pickaxe-shaped cutting pick |
| 02/02/2011 | CN201730621U High-wear-resistant coal cutter pick |
| 02/02/2011 | CN201730620U Hard alloy head for pick-shaped cutter pick |
| 02/02/2011 | CN201730617U Entry driving machine |
| 02/02/2011 | CN201730616U Development machine and floating sealing device thereof |
| 02/02/2011 | CN101963059A Cutting head of development machine and anti-interference device of shovel board |
| 02/02/2011 | CN101963058A Overturning moment resisting device for swing bearing |
| 01/30/2011 | CA2674699A1 Rock drill testing apparatus and method |
| 01/27/2011 | US20110018332 Method and Apparatus for Mining a Material in an Underground Environment |
| 01/27/2011 | DE102009027732A1 Chisel for use in milling device e.g. to process bitumen or concrete in road surfaces, has end section with dirt channel that allows passage of dirt from retaining area into area behind front surface of chisel shaft |
| 01/26/2011 | CN201723665U Novel scraping plate transmission device in loader digger and shuttle mine car |
| 01/26/2011 | CN201723225U Head recession limiting position reminding device for second conveyor of road header |
| 01/26/2011 | CN201723224U Mining telescopic transfer conveyor |
| 01/26/2011 | CN201723223U Composite reinforced truncation tooth of coal mining machine |
| 01/26/2011 | CN1572356B Dusting device with multiple stream nozzles |
| 01/26/2011 | CN101956554A Water spray assembly and pick box employing the same |
| 01/20/2011 | WO2011008694A2 Shear resistant excavation component |
| 01/20/2011 | WO2011006181A2 Advancing machine |
| 01/20/2011 | DE102010031297A1 Anpassungsfähige Haltehülsen für eine Werkzeugpicke Adaptable holding sleeves for a tool pick |
| 01/19/2011 | CN201714386U Driving device for gathering arm |
| 01/19/2011 | CN201714385U Material-collecting rake pawl |
| 01/19/2011 | CN201714384U Spading plate with auxiliary material collecting device |
| 01/19/2011 | CN201714383U Compact continuous coal miner |
| 01/19/2011 | CN201714382U Walking control system for hydraulic traction coal mining machine |
| 01/19/2011 | CN201714380U Structure for pin connection of plough head revolving body and plough base body of coal plough |
| 01/19/2011 | CN201714379U Supporting structure for replacing plough head skidding shoe of coal plough |
| 01/19/2011 | CN101952548A Method for the controlled maintaining of a distance between the roof and the face in longwall mining operations |
| 01/19/2011 | CN101952547A Method for automatically creating a defined face opening in longwall coal mining operations |
| 01/19/2011 | CN101949291A Control method |
| 01/19/2011 | CN101949290A Method for realizing overload protection of coal mining machine by adjusting rotary drum height of coal mining machine |
| 01/18/2011 | US7871133 Locking fixture |
| 01/13/2011 | WO2011006134A1 Wear-resistant attachments for high-wear applications |
| 01/13/2011 | WO2011004030A2 Attack tool assembly |
| 01/13/2011 | US20110006588 Adaptive sleeve retainer for tool pick |
| 01/13/2011 | US20110006584 Method for Automatically Producing a Defined Face Opening in Plow Operations in Coal Mining |
| 01/13/2011 | DE102009032483A1 Method for controlling roller in longwall face, involves providing electro-hydraulic support frames with electro-hydraulic control unit, where control commands are inputted to control device of expansion rack |
| 01/13/2011 | CA2767048A1 Wear-resistant attachments for high-wear applications |
| 01/13/2011 | CA2708907A1 Adaptive sleeve retainer for tool pick |
| 01/12/2011 | CN201705816U Special bearing for coal machine |
| 01/12/2011 | CN201705352U Novel dust suppression apparatus for excavators |