Patents
Patents for E21C 27 - Machines which completely free the mineral from the seam (1,602)
10/2011
10/12/2011CA2736669A1 Self-propelled surface milling machine with electrical mill roll drive
10/12/2011CA2736651A1 Self-propelled working machine with electrical drive system and processes for operating the same
10/05/2011CN202001010U Frame assembly for coal planer
10/05/2011CN1952348B Mining plow
10/05/2011CN102206998A Control system for coal planer
10/05/2011CN102205260A Emulsion traveling crusher
10/01/2011CA2735055A1 Dipper door retarding mechanism
10/01/2011CA2698850A1 Dipper door retarding mechanism
09/2011
09/28/2011CN102203381A Heading or extraction machine
09/21/2011CN201982094U 一种无键联接液压回转气动冲击凿岩机 A non-pneumatic shock coupling hydraulic rotary drilling machine
09/14/2011CN101512101B Method and apparatus for the milling cutting of materials
09/07/2011CN102174889A Coal planer
08/2011
08/31/2011CN102168558A Self-walking lifting full-hydraulic auger coal mining machine
08/31/2011CN102168557A Spinning coal mining machine
08/25/2011WO2011103051A1 Articulated pre-skimmer mount
08/24/2011CN201943695U 一种刨煤机 One kind Plow
08/16/2011DE202010000455U1 Gewinnungshobel Mining plow
08/11/2011US20110193398 Heading or extraction machine
08/11/2011DE10196407B4 Ausdehnbare und zurückziehbare Rotorarmanordnung Extendable and retractable rotor arm assembly
08/08/2011DE202010000457U1 Gewinnungshobel Mining plow
08/04/2011WO2011093777A1 Method and device for working rock
08/04/2011CA2786925A1 Method and device for working rock
08/03/2011CN101089364B Carriage for use in mining plane or coal plane for underground mining industry
07/2011
07/20/2011CN201902208U Self-adaption hard rock impact rotary crushing system
07/06/2011EP2340355A1 Method and device for working rock
07/05/2011CA2445846C Rock breaker tool
06/2011
06/29/2011CN201884029U Belt driving wheel type breaker with an integrated breaking tank
06/29/2011CN102108863A Coal plough rack assembly
06/29/2011CN101614123B Sweeper for lower chain passage of carriage of coal planer
06/22/2011CN201874570U Hydraulic breaking hammer
06/08/2011CN201857964U Saw-blade type tunnel boring machine
06/01/2011CN102080543A Cobalt crust stripping shovel
06/01/2011CN102080542A Manganese nodule collecting shovel
05/2011
05/26/2011WO2010122466A3 Bit arrangement for a mining plough, and mining plough for plough systems
05/26/2011WO2010122465A3 Mining plough for plough systems and plough system for inclined formation
05/25/2011EP2324158A1 Attachment cutting system having cutting heads and a cutter chain
05/25/2011CN201843613U Excavating impulsion shovel
05/25/2011CN102071937A Multi-metal sulfide mining shovel
05/19/2011WO2011059349A2 Method for mounting a ranging arm on a body of a longwall shearer loader
05/19/2011WO2011059348A2 Drive transmission method in a longwall shearer loader
05/19/2011WO2011057603A2 Compact roadheader
05/19/2011US20110115277 Method for steering a mining machine cutter
05/19/2011CA2780734A1 Compact selective cutting machine
05/19/2011CA2780313A1 Method for mounting a ranging arm on a body of a longwall shearer loader
05/19/2011CA2780312A1 Drive transmission method in a longwall shearer loader
05/18/2011CN201835831U Digging and conveying fully-mechanized mining unit for high-pitch long-wall working face
05/18/2011CN201835830U Planning and transporting machine
05/11/2011CN201826841U Coal mining equipment and crushing mechanism thereof
05/11/2011CN201826839U Wear-resistant guiding device of coal planer planning body
05/04/2011CN102042016A Adaptive hard-rock impact rotary crushing system
04/2011
04/28/2011DE202011003248U1 Hobelvorrichtung Planer
04/27/2011EP2313611A1 Mining machine and method of mining
04/27/2011EP2235325B1 Roof cutter holder adjustment device and securing element therefor
04/27/2011CN201810312U Tunnel mining machine
04/21/2011WO2011044877A2 Shearer loader having an integrated anchor setting unit
04/20/2011CN201802400U Drilling milling and beam assembling all-in-one machine for coal roadway
04/13/2011CN101065557B Coal-cutting machine
04/07/2011WO2011038436A2 Advancing machine
04/06/2011CN102003179A Saw blade type cave development machine
03/2011
03/23/2011CN201771495U 轮廓截割装置 Contour cutting device
03/23/2011CN101270661B Mine explosion-proof coal rock full hydraulic pulverizing development machine
03/17/2011WO2011029111A2 Tunneling machine or extraction machine
03/17/2011US20110062768 Mining Machine and Method of Mining
03/16/2011CN101985878A Tunnel mining machine
03/09/2011CN201756960U Rotary joint device for a plough chain of a coal plough
03/03/2011WO2011022744A2 Selective cut heading machine or advance working machine
03/03/2011US20110049965 Apparatus and method for mining coal
03/01/2011US7896445 Method and apparatus for the milling cutting of materials
02/2011
02/17/2011DE112006003436B4 Vortriebs- und Gewinnungsmaschine Heading and extraction machine
02/09/2011CN1904312B Method for the mining of coal and coal planer installation
02/02/2011CN101050704B Hydraulic crushing hammer drill rod
01/2011
01/26/2011CN101956553A Drill rod for hydraulic breaking hammer
01/19/2011CN201714381U Chain stopping device for chain tensioning for plough chain of coal plough
01/19/2011CN201714380U Structure for pin connection of plough head revolving body and plough base body of coal plough
01/19/2011CN201714379U Supporting structure for replacing plough head skidding shoe of coal plough
01/19/2011CN201713752U Cooling dust suppression device of drill rod of breaking hammer
01/06/2011US20110001348 Method for Controlling Longwall Operations Using Boundary Layer Recognition
12/2010
12/30/2010DE112008003294T5 Zerkleinerungs-oder Aushubwerkzeug mit einem Einsatz aus einem Wolframcarbid-Hartmetall und einem Ring Crushing or Excavation tool with an insert of a cemented tungsten metal and a ring
12/29/2010CN201687472U Coal planer and planer chain connecting device thereof
12/16/2010US20100314931 Heading Machine Having Cutting Unit Made of Disc Tools
12/14/2010CA2484388C Oscillating disc cutter with speed controlling bearings
12/08/2010CN201666150U Device for adjusting clearance between shovel rod gear and rack on excavator
12/08/2010CN1948711B Sword plate
12/08/2010CN101910559A Roof cutter holder adjustment device and securing element therefor
12/08/2010CN101910558A Advancing machine
12/08/2010CN101910557A Advancing machine
12/08/2010CN101906969A Coal mining device and crushing mechanism thereof
12/02/2010US20100301660 Cooling a ranging arm gear case on a longwall shearer
11/2010
11/24/2010CN201650285U Coal mining loader
11/24/2010CN201650284U Four-bit auger miner
11/17/2010CN201635742U Fastening device for plough head of coal plough
11/17/2010CN101889127A Breaking or excavating tool with cemented tungsten carbide insert and ring, material removing machine incorporating such a tool and method of manufacturing such a tool
11/10/2010CN101883911A Breaking or excavating tool with cemented tungsten carbide insert and ring, material removing machine incorporating such a tool and method of manufacturing such a tool
11/10/2010CN101881163A Continuous miner and running part thereof
11/04/2010US20100276986 Cutter drum extension mechanism
11/04/2010US20100276985 Noise reduced continuous miner
11/03/2010CN201623616U Coal mine machine and transmission system thereof
10/2010
10/28/2010WO2010122466A2 Bit arrangement for a mining plough, and mining plough for plough systems
10/28/2010WO2010122465A2 Mining plough for plough systems and plough system for inclined formation
10/28/2010US20100270849 Heading machine
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 ... 17