Patents for E21F 17 - Methods or devices for use in mines or tunnels, not covered elsewhere (4,758) |
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06/08/2011 | CN201857996U Coal face advance rate monitoring device |
06/08/2011 | CN201857995U Lifting beam for anchor cable |
06/08/2011 | CN201857953U Advanced abutment pressure monitoring device on coal face |
06/08/2011 | CN201857894U Improved hydraulic percussion drill |
06/08/2011 | CN102086778A Early warning and protecting device for disasters in mine |
06/08/2011 | CN101403317B Double-wall sleeve suspension type high-pressure gas underground storing well installation method and structure thereof |
06/08/2011 | CN101238307B Absorptive muffler assembly of compressor assembly and method |
06/01/2011 | CN201851162U Wireless monitoring device for coal mine roof separation layer |
06/01/2011 | CN201851161U Intelligent coal mine gas drainage detecting and monitoring cabinet |
06/01/2011 | CN201851160U Traffic lamp under mining well |
06/01/2011 | CN201851159U One-key type quick power supply unit |
06/01/2011 | CN201851158U Wind and water pipeline hanging device |
06/01/2011 | CN201851147U Dust removal device for mining surface of low coal seam |
06/01/2011 | CN201851144U Coal extraction face blowback type quick explosion suppression device |
06/01/2011 | CN201851112U Automatic hole-sealing gas pressure measuring and recording system for coal seams |
06/01/2011 | CN201850863U Uncovering and locking device in case of gas exceeding limit |
06/01/2011 | CN102083236A Underground positioning and safety monitoring system on basis of communication network |
06/01/2011 | CN102080571A Flameproof and intrinsically safe voice acousto-optic signal box for coal mine |
06/01/2011 | CN102080570A Twin-turbine underground high-power generator |
06/01/2011 | CN102080569A Distributed optical fiber temperature measurement-based fire early warning method for belt conveyor |
06/01/2011 | CN102080567A Automatic carrying, replacing and blowing device for tunnel air purification material modules |
06/01/2011 | CN102080563A Air door whistling and vehicle blocking device for mine main transportation roadway |
06/01/2011 | CN102080539A Mineral exploration method adopting rotaary and crossed type mineral exploration network |
05/25/2011 | CN201846368U Data transmission interface used for underground monitoring system |
05/25/2011 | CN201846347U Coal mine underground wireless communication system |
05/25/2011 | CN201845392U Special type sound and light alarm |
05/25/2011 | CN201845006U Carbon monoxide concentration detection alarm instrument |
05/25/2011 | CN201843643U Coal mine gas probe hanger |
05/25/2011 | CN201843642U Device used for pipeline transportation, installation and dismounting in tunnels or culverts |
05/25/2011 | CN201843637U Mining intelligent walking escape cabin |
05/25/2011 | CN201843634U Spraying and dust-falling system of ore unloading line for underground mine |
05/25/2011 | CN201843633U Protection device for drilling construction of mine |
05/25/2011 | CN201843619U Improved body of central rotary joint of shield |
05/25/2011 | CN102073107A Underground optical cable connecting device |
05/25/2011 | CN102071972A Method for discriminating underground coal combustion center |
05/25/2011 | CN102071971A Gas sampling detector of multifunctional tube bundle monitoring emergency fire prevention and fire fighting system |
05/25/2011 | CN102071970A Multifunctional sensor in mine |
05/25/2011 | CN101539029B Method for partitioning gas tunnels |
05/25/2011 | CN101289944B Laneway fluid pipe trailer fixing device |
05/19/2011 | US20110116868 Method for constructing an underground tunnel or hole to create an impervious plug for the storage of hazardous, particularly radioactive, waste |
05/18/2011 | CN201837728U Rock stratum identification device based on array fiber sensor |
05/18/2011 | CN201835873U Mine acoustic-optical signal device with speech compressing function |
05/18/2011 | CN201835872U Environment monitoring device for mine refuge chamber |
05/18/2011 | CN201835871U Gas monitoring system |
05/18/2011 | CN102065280A Novel shaft wireless network mobile video monitoring device |
05/18/2011 | CN102061941A Tunnel and gob surrounding rock safety and real-time directional non-destructive monitoring device and early warning method |
05/18/2011 | CN102061940A Feed transducer for detecting differential mode leakage current of power cable |
05/18/2011 | CN102061935A Wireless multimedia command system for mine rescue |
05/18/2011 | CN102061932A High-pressure small jet coal and gas outburst control device |
05/18/2011 | CN102061930A Downhole fast sealing device in coal mine |
05/18/2011 | CN102061929A Blowback fast explosion suppression device for coal mining working face |
05/18/2011 | CN102061722A Double-pump automatic circular water charging system of coal mine hydrostatic tank |
05/11/2011 | CN201830443U Emergency alarming microphone |
05/11/2011 | CN201827446U Three-purpose changeover valve |
05/11/2011 | CN201826897U Mine safety monitoring system based on ZigBee and GSM |
05/11/2011 | CN201826896U Surface mine multilayer gob stability monitoring and warning device |
05/11/2011 | CN201826895U Probe-type explosion-proof water level alarm |
05/11/2011 | CN201826894U Underground personnel positioning and monitoring system with function of two-way calling |
05/11/2011 | CN201826893U Safety monitor system for mechanical pumping wells |
05/11/2011 | CN201826892U Movable pump station for mine underground drainage |
05/11/2011 | CN201826887U Automatic uranium mine ore and spoil separation apparatus |
05/11/2011 | CN102053573A Hierarchical monitoring method for metro tunnel flood gate |
05/11/2011 | CN102053136A Plateau non-coal mine underground air environment parameter real time monitor |
05/11/2011 | CN102052088A Scraper device cable tank for mine manless working face |
05/11/2011 | CN101532397B Real-time diagnosis method of prominent coal and gas |
05/11/2011 | CN101135245B Device for automatically enclosing tunnel rapidly |
05/10/2011 | US7938343 Self-propelled irrigation system with articulated drive tower |
05/04/2011 | CN201821509U Autonomous intelligent detection multiple robot wireless communication system based on wireless network used for mines |
05/04/2011 | CN201820344U Coal mine safety monitoring equipment signal anti-interference transmission system |
05/04/2011 | CN201818330U Coal mine underground personal positioning system |
05/04/2011 | CN102042035A Design method for communication base stations for safety monitoring system of coal mine |
05/04/2011 | CN102042034A Gas monitoring system |
05/04/2011 | CN102042033A Automatic alarming and processing system for series coal mine gas |
05/04/2011 | CN102042030A Construction tunnel safety protection method based on wireless sensor network and a monitoring system thereof |
05/04/2011 | CN102042027A Coal mine gas drilling drainage device |
05/04/2011 | CN101504305B Mining rail sensor |
04/28/2011 | WO2011049856A1 Cable support hook |
04/28/2011 | WO2011047456A1 Power storage and regeneration facility |
04/27/2011 | EP2313614A2 Method for constructing an underground tunnel or hole to create an impervious plug for the storage of hazardous, particularly radioactive, waste |
04/27/2011 | CN201810351U Mine bend alarm |
04/27/2011 | CN201810350U Coal mine single-hole gas measuring device |
04/27/2011 | CN201810349U Fiber Bragg grating sensing-based mine alarming device |
04/27/2011 | CN201810348U Remote hydraulic-controlled along-line stopping device |
04/27/2011 | CN201810347U Station connecting mechanism of mining high-voltage vacuum distribution device |
04/27/2011 | CN201810341U Personnel safety protection device for coal mine belt conveyor |
04/27/2011 | CN201810306U Hydrogeological parameter observation instrument used for singly drilling underground |
04/27/2011 | CN201809802U Water supply device for tunnels |
04/27/2011 | CN102031992A Underground working face high-pressure hose clamp |
04/27/2011 | CN102031991A Accident monitoring, warning and emergency management system and method |
04/27/2011 | CN102030047A Detection robot for underground rescue of pressurized type coal mine |
04/26/2011 | US7931242 Support assemblies for pipes, conduits and tubes |
04/20/2011 | CN201802441U Cable storage device for heading face |
04/20/2011 | CN201802438U Automatic spraying dust control device |
04/20/2011 | CN201802436U Multi-parameter detector for mine ventilation |
04/20/2011 | CN101571044B Subway shield gas tunnel construction method |
04/20/2011 | CN101519980B Coal mine gas real-time alarm system and method based on text to voice |
04/20/2011 | CA2682966A1 Power storage and regeneration facility |
04/19/2011 | US7926766 Support assemblies for pipes, conduits and tubes |
04/14/2011 | WO2011041893A1 High performance equipment elevating device |
04/14/2011 | WO2011041848A1 A mine operation monitoring system |