| Patents for E21F 17 - Methods or devices for use in mines or tunnels, not covered elsewhere (4,758) |
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| 07/08/2009 | CN101476487A Human-computer latch-up protection system for coal mine excavation work region |
| 07/01/2009 | CN101469615A Digital close shot photogrammetric survey method for coal mine safety prewarning |
| 07/01/2009 | CN100507215C Visual command equipment for mine rescue |
| 06/18/2009 | DE102007060210A1 Method for making abandoned mine shafts safe comprises producing diagonal bores through shaft walls, filling them with flexible tubes and inflating them with filler under pressure which is then hardened |
| 06/17/2009 | EP2069738A2 Method and apparatus for locating a localized temperature change in a workspace |
| 06/17/2009 | CN201258762Y Power feed status sensor device |
| 06/17/2009 | CN201258761Y Wind speed sensor device for mine |
| 06/17/2009 | CN201258760Y Smoke sensor |
| 06/17/2009 | CN201258759Y Multifunction detecting roller for mine |
| 06/17/2009 | CN100501133C Sensor network based underground safety monitoring system and method |
| 06/10/2009 | CN100497889C Multiple azimuths and double functions monitor and alarm for surrounding rock and bed separation |
| 06/09/2009 | US7543606 Methods for supporting conduits in a sanitary environment |
| 06/03/2009 | CN201250671Y Subway connection section super-wide abnormal flood-proof protective and closed blocking door |
| 06/03/2009 | CN201250670Y Electric lifting type flood-proof protective closed blocking door |
| 06/03/2009 | CN201250669Y Underground circular-arc arched split prevention water gate of mine |
| 06/03/2009 | CN201250668Y Underground circular-arc arched separable upturning type prevention water gate of mine |
| 06/03/2009 | CN101446206A Mine fiber optic sensor mounting method and special jaw |
| 06/03/2009 | CN101446205A Coal-mine gas monitoring system comprising wireless sensor network |
| 06/03/2009 | CN101446204A Installation device of sensor of mine pressure monitoring system |
| 06/03/2009 | CN101446203A Method for checking dangerous environment of urban electric network tunnel by robot |
| 06/03/2009 | CN100494638C Mounting method for deep hole microseismic monitoring sensor of coal mine |
| 06/03/2009 | CN100494637C Mounting method for shallow hole microseismic monitoring sensor of coal mine deep well |
| 06/03/2009 | CN100494636C Remote monitoring predicting method of empty zone hard top plate |
| 06/02/2009 | US7540452 Air duct support |
| 05/28/2009 | US20090134692 Method and apparatus for monitoring gateroad structural change |
| 05/27/2009 | CN201248109Y Mobile video monitoring system for oil well and mine well |
| 05/27/2009 | CN201246186Y Novel anti-fire door for mining |
| 05/27/2009 | CN101441141A Use method of downhole disaster area long distance harmful gas continuous sampler |
| 05/27/2009 | CN101440707A Coal-bed gas pressure measuring instrument and measuring method thereof |
| 05/20/2009 | CN201242416Y Tube-type top board abscission layer indicator |
| 05/14/2009 | WO2009000531A3 Method for eliminating smoke from and ventilating an underground train station |
| 05/13/2009 | CN201237909Y Down-hole anti-interference automatic music playing circuit |
| 05/13/2009 | CN201236722Y Dynamic monitoring system of coal mine roof plate |
| 05/13/2009 | CN101429874A Portable security instrument for miner |
| 05/06/2009 | CN201233230Y Displacement measurement machine for working face baseboard |
| 05/06/2009 | CN201232573Y Tunnel environment detecting and alarming robot |
| 05/06/2009 | CN201232572Y Coal mine tunnel goaf fire wall |
| 04/30/2009 | WO2009052603A1 Communication equipment mounting apparatus for a mine |
| 04/29/2009 | CN201228561Y Interactive alarm device for tunnel construction |
| 04/29/2009 | CN201228560Y Tunnel flexible pipeline convey trailing device |
| 04/29/2009 | CN201228559Y Tunnel liquid tube convey fixing device |
| 04/29/2009 | CN201228558Y Downhole multifunction fan-shaped windscreen |
| 04/29/2009 | CN101418688A Intelligent full automatic combine coal mining system |
| 04/23/2009 | US20090101763 Cable Hanger |
| 04/22/2009 | CN201225921Y System for preventing mine car from weighing |
| 04/22/2009 | CN201225167Y Water-proof gate |
| 04/22/2009 | CN101413402A Mine laneway disaster prevention water wall |
| 04/22/2009 | CN101413400A Tunneling operation simple emergent life-saving connection device and mounting method thereof |
| 04/15/2009 | CN201221382Y Mine laneway flexible pneumatic air door |
| 04/15/2009 | CN101408112A Low concentration gas thermal convection buoyancy lift collecting device |
| 04/08/2009 | EP2043930A1 Thermal energy storage system |
| 04/08/2009 | CN201218107Y Automatic monitoring apparatus for incline shaft transportation security |
| 04/08/2009 | CN101403317A Double-wall sleeve suspension type high-pressure gas underground storing well installation method and structure thereof |
| 03/31/2009 | CA2536763C Simultaneous development of underground caverns and deposition of materials |
| 03/18/2009 | EP2035767A1 Method and device for determining displacements and/or deformations in underground working |
| 03/18/2009 | CN201210676Y Positioning transmitting device and receiving device for infrared wide-angle communicating cutter |
| 03/18/2009 | CN201209461Y Multifunction mash gas pumping and discharging sensor |
| 03/18/2009 | CN201209460Y Tunnel anticollision alarm unit |
| 03/04/2009 | CN201202496Y On-line monitoring early warning apparatus of tunnel water burst mud projecting burst geologic hazard |
| 03/04/2009 | CN201202495Y Mine downhole disaster non-electric optical fiber vibration apparatus for calling for help |
| 03/04/2009 | CN201202487Y Dust removing noise reducer of mining ventilation shaft air exit |
| 03/04/2009 | CN201202475Y Development machine |
| 02/26/2009 | WO2009024352A1 Semiconductor factory |
| 02/25/2009 | CN201198766Y Mine lamp over current gas alarm |
| 02/25/2009 | CN201198760Y Safe high-efficiency integrative matching equipment of large excavating high automatic fully mechanized working face |
| 02/19/2009 | WO2009023008A1 Miner acoustic communication and location system |
| 02/18/2009 | CN201196100Y Detection robot for electric power tunnel |
| 02/18/2009 | CN201196099Y Noxious gas alarm device for explosion-proof drilling well |
| 02/18/2009 | CN201196096Y Gypsum sealing bottler |
| 02/11/2009 | CN201193539Y Mining intelligent substation |
| 02/11/2009 | CN201193538Y Self-powered air door alarm |
| 02/04/2009 | CN201190579Y Data acquisition aiding belt for mine |
| 02/04/2009 | CN101361295A Network for confined hazardous or other extreme environments |
| 02/03/2009 | US7484697 Universal strut end clamp |
| 01/29/2009 | DE10236795B4 Verfahren zum Verfüllen tiefer Schächte Method for filling deep wells |
| 01/29/2009 | DE102007022439B4 Versorgungsleitungsstrang Supply wiring harness |
| 01/28/2009 | CN201187325Y Gas detection early warning robot device |
| 01/27/2009 | US7481247 Sanitary conduit supports |
| 01/27/2009 | CA2583519C Method and system for mining hydrocarbon-containing materials |
| 01/23/2009 | CA2594529A1 Method to increase storage capacity of natural gas storage caverns with a refrigeration system |
| 01/22/2009 | DE102007025016B3 Roadway, tunnel and gallery blocking method for e.g. mine, involves filling breaking line with ballast, which is fixed ahead and behind sealing structure, and clamping sealing structure on both sides by ballast filling |
| 01/21/2009 | CN101349164A Mine down-hole circular arc arched opposite opening type water protecting gate |
| 01/21/2009 | CN101349163A Mine down-hole circular arc arched splitting upper turn-over type water protecting gate |
| 01/20/2009 | CA2403124C Arrangement for determining position of unmanned mining vehicles |
| 01/14/2009 | CN201181985Y Mining flame-proof type monitor |
| 01/14/2009 | CN201180563Y Ground acousto-optic alarm device for coal mine safety monitoring |
| 01/14/2009 | CN201180544Y Intelligent full-automatic combined coal mining system |
| 01/14/2009 | CN201179289Y Fire-fighting salvation apparatus for well cavity |
| 01/14/2009 | CN101344012A Dynamic monitoring system of coal mine roof plate |
| 01/13/2009 | CA2637425A1 Method of estimating life expectancy of electric mining shovels based on cumulative dipper loads |
| 01/08/2009 | US20090008514 Universal suspended anchor system |
| 01/07/2009 | CN201176882Y Odorant trigger mechanism |
| 01/07/2009 | CN101338686A Pipe type top board separation layer indicator |
| 12/31/2008 | CN201174616Y Power supplying device for mine well part fan |
| 12/31/2008 | CN201173139Y Explosion-proof pressure relief closed device |
| 12/23/2008 | US7467765 Sway brace clamp and connector assembly |
| 12/17/2008 | EP1623095B1 Expandable rock bolt and rock bolting system |
| 12/17/2008 | CN201166909Y System for tracking card counting steps |
| 12/10/2008 | CN201163441Y Down-hole monitoring base station |
| 12/10/2008 | CN201163440Y Mining wireless monitoring system |