| Patents for E21C 27 - Machines which completely free the mineral from the seam (1,602) |
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| 03/20/2007 | US7192094 Auger flight support system |
| 03/13/2007 | US7188441 Plow guide for a chain-pulled plow |
| 03/07/2007 | EP1760255A1 Mining apparatus |
| 03/07/2007 | EP1760254A1 Mining apparatus |
| 02/14/2007 | CN2869320Y Height-adjusting device for coal planing machine plough |
| 02/13/2007 | US7175237 Hewing or cutting roll |
| 02/08/2007 | US20070029864 Method for the mining of coal and coal planer installation |
| 02/08/2007 | US20070029863 Planing device and method for activating a planing device |
| 02/01/2007 | DE102005036359A1 Method for recovering coal comprises using a coal planing device having a coal plane which moves to and fro between a drive station and a reversing station with a reversing chain wheel |
| 01/31/2007 | CN1904312A Method for the mining of coal and coal planer installation |
| 01/25/2007 | DE19737936B4 Abbaueinrichtung für den Untertagebergbau, insbesondere für die Kohlegewinnung in Strebbetrieben Mining equipment for underground mining, especially for coal mining in longwall operations |
| 01/24/2007 | CN1902377A Core breaker for an earth strata cutting assembly |
| 12/07/2006 | DE19819140B4 Vorrichtung zum Führen eines Kohlenhobels an der Förderrinne eines Kettenkratzförderers An apparatus for performing a coal plow on the conveyor trough of the scraper chain conveyor |
| 12/05/2006 | US7144087 Systems and methods for milling paving material with increased stability, support, and power |
| 11/23/2006 | WO2005104673A3 Mining apparatus with precision navigation system |
| 11/09/2006 | DE102005020170A1 Motorised tunnelling winning scraper has scraper blade mounted on chain driven by differentially operated motors |
| 11/02/2006 | US20060244302 Plough guide for a chain-pulled plough |
| 11/02/2006 | DE19750484B4 Gewinnungseinrichtung, insbesondere für die Kohlegewinnung in untertätigen Gewinnungsstreben Extraction device, in particular for the coal mining in under active recovery efforts |
| 11/01/2006 | CN1854461A Coal planer and method for controlling same |
| 10/19/2006 | US20060232122 Underground Mining Machine |
| 10/18/2006 | CN2828313Y Coal mine tunnelling machine |
| 10/04/2006 | EP1706585A1 Core breaker for an earth strata cutting assembly |
| 09/28/2006 | DE19736662B4 Abbaueinrichtung für den Untertagebergbau Mining equipment for underground mining |
| 09/27/2006 | CN1277041C Mining and tunneling device |
| 09/20/2006 | CN1834404A Plough guide for a chain-pulled plough |
| 08/17/2006 | DE19528850B4 Verfahren zur Bestimmung und Regelung der Kettenvorspannung von kettenbetriebenen Gewinnungs- und Fördersystemen sowie Vorrichtung zur Durchführung des Verfahrens Methods for identification and control of the chain pre track-driven extraction and delivery systems, and apparatus for performing the method |
| 08/03/2006 | WO2006079536A1 Device for milling rock and other materials and method or milling rock or the like using said device |
| 08/02/2006 | CN2802087Y Planing knife of coal planer |
| 07/20/2006 | DE102005060087A1 Sealing device for cutting compartment of cutting, tunneling or extracting machines has cross section, which is designed as recess in segment slider and partly overlaps and is in form-fit position with other segment slider |
| 07/11/2006 | US7073870 Bit holder for a ploughing bit of a coal or extraction plough and ploughing bit |
| 07/04/2006 | US7070040 Toggle and toggle connection assembly |
| 06/29/2006 | DE202006006234U1 Sliding plane guide for extraction plane, has floating spacer and guide arbor forming one assembly, and articulated link detachable by combined sliding of link part formed at assembly with a flow shot sided articulated link |
| 06/28/2006 | EP1317602B1 Method for boring and placing bolts for imbedding adhesively and device for carrying out this method |
| 06/14/2006 | CN2787832Y Planing type trackless coal mining machine |
| 06/07/2006 | EP1664672A2 Geosteering detectors for boring-type continuous miners |
| 06/06/2006 | US7055913 Chain guide arrangement on a mining machine |
| 06/06/2006 | CA2414368C Extendable and retractable rotor arm assembly |
| 06/01/2006 | WO2006056000A1 Coal-cutting machine |
| 05/23/2006 | US7048340 Method for introducing and blowing rock dust and device for carrying out said method |
| 05/18/2006 | DE202005005571U1 Chain guide element for underground extraction equipment drive chains has guide surface with at least 2 contact zones for element leg for interaction with vertical chain element leg in inlet and/or outlet section before/after chain wheel |
| 05/04/2006 | DE102005018120B3 Extraction machine for underground mining has gear arrangement has with compensation shaft passing through cantilever arm and coupled to drive and cutter roller unit via first and second angled gear stages |
| 05/02/2006 | US7036890 Core breaker for an earth strata cutting assembly |
| 04/27/2006 | US20060087169 Coal plow cutter |
| 04/12/2006 | EP1497536A4 Oscillating disc cutter with speed controlling bearings |
| 03/23/2006 | US20060061206 Tool, cutter and button disk |
| 03/23/2006 | US20060061205 Device for produing a gas-liquid mixture in the vicinity of cutting tools |
| 02/23/2006 | US20060038438 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 02/22/2006 | CN1737332A Planing type trackless coal getting machine |
| 02/09/2006 | DE19649108B4 Kurzfrontmaschine für den Untertagebergbau mit einer Führung für ein Bohrgerät zum Herstellen von Bohrlöchern für die Firstverankerung Short front machine for underground mining with a guide for a drill for making holes for anchoring First |
| 02/02/2006 | DE10132608B4 Aktivierungsgerät und Aktivierungssystem zur Bereitstellung eines Schlagimpulses für Schneidköpfe hydraulischer Trägergeräte Activation device and activation system for providing a shock pulse for cutting heads hydraulic carrier devices |
| 12/22/2005 | DE202005016177U1 First chisel support adjustment arrangement for production plane has gear mechanism consisting of planetary gear that is interposed between input shaft and worm wheel |
| 12/20/2005 | CA2278735C Mining ultra thin coal seams |
| 12/20/2005 | CA2189132C A highwall mining system with mining and removal of coal (or ore) |
| 12/08/2005 | WO2005012944A3 Geosteering detectors for boring-type continuous miners |
| 12/07/2005 | CN2744834Y Combined excavating machine |
| 11/10/2005 | WO2005104673A2 Mining apparatus with precision navigation system |
| 11/10/2005 | US20050248209 Hewing or cutting roll |
| 11/10/2005 | CA2561803A1 Mining apparatus with precision navigation system |
| 10/19/2005 | CN1685133A Device for producing a gas-liquid mixture in the vicinity of cutting tools |
| 09/13/2005 | US6942301 Method for boring and placing bolts for imbedding adhesively and device for carrying out this method |
| 08/09/2005 | US6926368 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 07/28/2005 | DE102004059943A1 Vortriebs- oder Gewinnungsmaschine mit Ankerbohr- und -setzeinrichtungen Heading or extraction machine with anchor drilling and setting devices |
| 07/27/2005 | CN1646788A Oscillating disc cutter with speed controlling bearings |
| 07/21/2005 | WO2005066459A1 Core breaker for an earth strata cutting assembly |
| 07/21/2005 | US20050156460 Advance working or mining machine |
| 07/20/2005 | CN1641186A Coal digging machine for underground mining |
| 07/14/2005 | US20050151412 Plough for underground mining |
| 07/07/2005 | US20050146198 Core breaker for an earth strata cutting assembly |
| 06/30/2005 | US20050140200 Oscillating disc cutter with speed controlling bearings |
| 06/16/2005 | US20050129466 Roadheading or mining machine with roof bolt drilling and setting devices |
| 06/14/2005 | CA2389736C Apparatus and method for continuous mining |
| 06/01/2005 | CN1204331C Mining machine and mining method |
| 05/25/2005 | DE202005004383U1 Hobelführungsschuß für Gleithobel Plow guide shot for Gleithobel |
| 05/24/2005 | CA2293238C Conveyor for ultra thin seam coal mining |
| 04/21/2005 | DE19732946B4 Gewinnungseinrichtung für den Untertagebergbau, insbesondere für die Kohlegewinnung in Strebbetrieben Obtaining means for underground mining, especially for coal mining in longwall operations |
| 04/05/2005 | CA2167182C Highwall mining system |
| 04/05/2005 | CA2167181C Highwall mining system |
| 03/31/2005 | US20050067879 Combination panline and utility drilling or bolting unit |
| 02/24/2005 | US20050040692 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 02/10/2005 | WO2005012944A2 Geosteering detectors for boring-type continuous miners |
| 02/10/2005 | CA2783273A1 Geosteering detectors for boring-type continuous miners |
| 02/10/2005 | CA2534439A1 Geosteering detectors for boring-type continuous miners |
| 02/03/2005 | US20050023881 Geosteering detectors for boring-type continuous miners |
| 01/19/2005 | EP1497536A1 Oscillating disc cutter with speed controlling bearings |
| 12/29/2004 | CN2667160Y Accumulator battery antiexplosive tractor shovel |
| 12/23/2004 | US20040256907 Plow guide for a chain-pulled plow |
| 12/09/2004 | US20040245844 Advancer for coal mining system |
| 12/09/2004 | US20040245843 Platform and driver for coal mining system |
| 12/02/2004 | DE10320169A1 Coal chipper for use in underground mining applications, has control drive having hydraulic jack for height adjustment of chisel holder, and locking device for securing chisel holder at predetermined height with respect to skid |
| 12/01/2004 | CN1550637A Coal plough guide device for chain hauled shearer |
| 12/01/2004 | CN1550429A Wing type hook for wing type hook connection device and wing type hook connection device |
| 11/11/2004 | US20040222067 Toggle and toggle connection assembly |
| 10/05/2004 | US6799809 Method and apparatus for remote self-propelled conveying in mineral deposits |
| 09/22/2004 | CN1530516A Vertical cross chain cutting method and its tunneller, long wall mining machine and stone mining machine |
| 09/07/2004 | US6785988 Driving or mining machine |
| 09/01/2004 | CN1164859C Driving cutting device |
| 08/26/2004 | DE202004009723U1 Drive for chain driven coal cutter has a housing fitted to the clearing chain housing and with a removable insert block for access to the chain wheel and chain lifter |
| 08/25/2004 | EP1187968B1 Cutter loader |
| 07/29/2004 | US20040145231 Method for introducing and blowing rock dust and device for carrying out said method |
| 07/22/2004 | DE20307151U1 Knebel für Knebelverbindungen und Knebelverbindung Gag for gag and gag connections connection |