| Patents for E21C 27 - Machines which completely free the mineral from the seam (1,602) |
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| 07/22/2004 | DE20307150U1 Hobelführung für kettengezogenen Hobel Plow guide for chain-drawn planer |
| 07/08/2004 | DE202004007113U1 Coal cutting machine has the rear of the cutting head supported by an overhead frame braced by a jointed support with two sliders on a guide over the rear edge of a conveyor |
| 06/03/2004 | DE202004005920U1 Kohlenhobelmeißel Carbon planing tools |
| 06/03/2004 | DE10254021A1 Deep mine coal face cutter or coal scraper conveyer has main drive motor and gear and one secondary motor and gear with superimposed gear drive |
| 05/12/2004 | CN1496437A Mining and tunnelling device |
| 04/08/2004 | WO2004029412A1 Device for producing a gas-liquid mixture in the vicinity of cutting tools |
| 04/08/2004 | WO2004029368A1 Rapid attach system |
| 04/01/2004 | DE202004000516U1 Hobel für die untertägige Gewinnung Planing for underground mining |
| 03/04/2004 | DE19637973B4 Gewinnungshobel mit höhenverstellbarem Firstmeißelträger Mining plow with adjustable roof cutter holder |
| 03/04/2004 | DE19637789B4 Hobel für die untertägige Gewinnung von Kohle u. dgl. U planing for underground mining of coal. Like. |
| 03/04/2004 | DE19637226B4 Hobel für die untertägige Gewinnung Planing for underground mining |
| 03/02/2004 | US6698843 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 02/05/2004 | US20040021363 Method for boring and placing bolts for imbedding adhesively and device for carrying out this method |
| 12/23/2003 | US6666523 Reef miner with disk and drum cutters |
| 12/23/2003 | US6666521 System for controlling cutting horizons for continuous type mining machines |
| 11/12/2003 | EP1360396A1 Control of the advance and cutting roller height of a shearer loader according to the load of the roller carrier arm |
| 11/11/2003 | US6644753 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 10/30/2003 | WO2003089762A1 Oscillating disc cutter with speed controlling bearings |
| 09/02/2003 | US6612655 Mining system and method featuring a bread loaf shaped borehole |
| 08/14/2003 | WO2003067022A1 A mining or tunnelling device |
| 08/06/2003 | EP1144805B1 Sinking machine with vertical swing rollers |
| 07/16/2003 | CN2560756Y Vibrating cutting mechanism for arm entry-driving machine |
| 06/19/2003 | US20030111892 Method of mining and an improved mining machine with a shovel moveable relative to a vehicle chassis |
| 06/18/2003 | DE20304604U1 Articulated arm for deep mine roadway roof cutting tool |
| 06/11/2003 | EP1317602A1 Method for boring and placing bolts for imbedding adhesively and device for carrying out this method |
| 04/17/2003 | DE10205124C1 Extraction machine, for digging out hard rock e.g. platinum ore, has an eccentric shaft through a sleeve supported in a housing, as the drive for a cycloid gear to power the cutters |
| 04/15/2003 | US6547336 Open cast mining device and apparatus for testing the cutting minability of critical material |
| 03/12/2003 | EP1291490A2 Excavating tool for rock, minerals etc |
| 03/12/2003 | CN1401882A Driving cutting device |
| 03/06/2003 | US20030041482 Excavating tool and method for excavating rock, minerals and the like |
| 03/06/2003 | CA2401463A1 Excavating tools for releasing rock, minerals and the like layer by layer, in milling fashion |
| 02/26/2003 | CN2537816Y Cutting machine |
| 01/14/2003 | US6505892 Softwall mining method and device |
| 01/08/2003 | EP1273411A2 Activation device for cutting head on hydraulic tool support |
| 01/08/2003 | EP0747572B1 Face-working machine |
| 10/31/2002 | US20020157283 Driving or mining machine |
| 10/08/2002 | CA2259245C Swing tail assembly for miner |
| 10/03/2002 | WO2002048506A3 Self-propelled remote mining conveyor,method and apparatus therefor |
| 10/01/2002 | CA2192544C Apparatus and method for continuous mining |
| 09/19/2002 | US20020130546 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 09/12/2002 | US20020125760 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 09/05/2002 | DE10106753A1 Steuerung des Vorschubs und des Schneidwalzenhöhenniveaus eines Walzenschrämladers in Abhängigkeit von der Belastung des Walzentragarmes Control of feeding and cutting roller height levels Walzenschrämladers a function of the load on the roller support arm |
| 08/29/2002 | US20020117887 Mining apparatus and method |
| 08/22/2002 | WO2002064948A1 Control of the advance and cutting roller height of a shearer loader according to the load of the roller carrier arm |
| 08/22/2002 | US20020113484 Mining system and method featuring a bread loaf shaped borehole |
| 08/13/2002 | US6431654 Mining machine having an extendable and retractable rotor arm and method of repairing an extendable and retractable rotor arm assembly |
| 08/06/2002 | US6428109 Mining machine with sliding cutting tool assembly |
| 07/17/2002 | EP1029150B1 Device for cutting or kirving material |
| 06/20/2002 | WO2002048506A2 Self-propelled remote mining conveyor,method and apparatus therefor |
| 06/20/2002 | CA2431648A1 Self-propelled remote mining conveyor, method and apparatus therefor |
| 04/11/2002 | DE19938361C2 Anordnung zur Bestimmung der Position eines Hobels in einem untertägigen Streb Arrangement for determining the position of a planer in an underground face |
| 03/20/2002 | EP1187968A1 Cutter loader |
| 03/14/2002 | WO2002020946A1 Method for boring and placing bolts for imbedding adhesively and device for carrying out this method |
| 03/07/2002 | DE10062441C1 Preventative monitoring method, for underground coal mining plant, detects actual operating temperature for switching to partial loading or initiating safety cut-out |
| 02/20/2002 | CN2477830Y Mine internally cooling and dust removing hard alloy chain cutter |
| 01/30/2002 | EP1029152B1 Cutting machine |
| 01/17/2002 | WO2002004786A1 Extendable and retractable rotor arm assembly |
| 01/10/2002 | WO2002002909A1 Softwall mining method and device |
| 01/10/2002 | CA2430662A1 Softwall mining method and device |
| 12/12/2001 | EP0912816B1 Cutting control process and device for detecting the depth of cut of kirving tools |
| 11/13/2001 | US6315365 Mining machine with core breakers |
| 11/08/2001 | US20010038236 Open cast mining device and apparatus for testing the cutting minability of critical material |
| 10/23/2001 | US6305754 Tunnel excavator with S-shaped soil plate |
| 10/17/2001 | EP1144805A1 Sinking machine with vertical swing rollers |
| 10/17/2001 | CN1318129A Mining machine and mining method |
| 09/26/2001 | CN1314540A Man controlled falling technical method for top coal in mining area |
| 09/20/2001 | DE10019748C1 Device, to test ability to cut and mine critical material, has two-track running gear, frame with drive assembly, control platform and horizontal cutting roller connected to conveyor |
| 08/23/2001 | US20010015573 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 08/07/2001 | US6270163 Mining machine with moveable cutting assembly and method of using the same |
| 07/10/2001 | US6257671 Device for protecting selective cutting machines against overload |
| 06/19/2001 | US6247758 Longwall coal cutter and loader |
| 05/17/2001 | DE19951848A1 Extraction machine for coal mining has nozzle which delivers current of air and second nozzle which delivers stream of water positioned so that mixture of air and water is fed on to cutter head, throttle valve ensuring constant flow rate |
| 05/01/2001 | US6224164 Mining machine with detachable articulated cutting assembly |
| 04/24/2001 | US6220670 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 04/10/2001 | CA2010545C Advance/retreat cutting miner |
| 03/27/2001 | US6206478 Tunnel excavator with crawler drive and roof support bearing frames |
| 03/20/2001 | US6203111 Miner guidance using laser and image analysis |
| 03/15/2001 | WO2001018359A1 Dust suppression system for continuous type mining machines |
| 02/22/2001 | DE19938361A1 Arrangement for determining position of cutting machine at coal face employs an electronic magnetic sensor to detect changes in gap between cutter and coal conveyer |
| 02/15/2001 | WO2001011192A1 Device for loosening and transporting mineral raw material outcropping in the form of seams, especially coal |
| 02/15/2001 | DE19937695A1 Vorrichtung zum Lösen und Fördern von flözartig anstehenden mineralischen Rohstoffen, insbesondere von Kohle Device for releasing and promoting flözartig pending mineral resources, especially coal |
| 01/17/2001 | EP0943051B1 Device for damping vibrations in a part-face cutting machines |
| 01/02/2001 | US6168240 Atmospheric detection system for an automated mining system |
| 12/21/2000 | WO2000077346A1 Cutter loader |
| 12/21/2000 | DE19927364A1 Walzenschrämlader Shearer |
| 12/14/2000 | DE19925949A1 Arrangement for determining mining machine cutting horizon has sealed sensor carrier housing removably mounted on machine, containing pressure element and movable sensor head |
| 10/31/2000 | US6139112 Mining machine with internal water supply for the cutting drums |
| 09/27/2000 | CN1056908C Method for mining coal bed in certain ploughing depth |
| 09/08/2000 | WO2000052302A1 Continuously operating mining machine for simultaneous mining and removing coal |
| 09/07/2000 | DE19909149A1 Kontinuierlich arbeitende Gewinnungsmaschine für das gleichzeitige Hereingewinnen und Abfördern von Kohle Continuous-mining machine for simultaneous Come gains and conveying away from coal |
| 08/23/2000 | EP1029152A1 Cutting machine |
| 08/23/2000 | EP1029150A1 Device for cutting or kirving material |
| 08/10/2000 | WO2000015947A9 Mining machine and mining method |
| 08/03/2000 | DE19903309A1 Coal planing unit has body movable on guide and plane tower pivotable around vertical axis against coal face |
| 08/01/2000 | CA2203625C Continuous highwall mining machine with armless conveyor |
| 07/27/2000 | WO2000043638A1 Sinking machine with vertical swing rollers |
| 07/27/2000 | CA2358847A1 Sinking machine with vertical swing rollers |
| 07/18/2000 | CA2205596C Apparatus and method for cutting arched opening |
| 07/05/2000 | EP1015733A1 Anchor boring and setting device |
| 07/05/2000 | CN1054090C Roller chain rolling-pushing type cutting machine |