| Patents for E21F 17 - Methods or devices for use in mines or tunnels, not covered elsewhere (4,758) |
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| 04/10/2013 | CN101845968B Mining tunnel heat-insulation and fire-proofing combination wall |
| 04/03/2013 | CN202856993U Coal mine underground wireless sensor base station and security monitoring system |
| 04/03/2013 | CN202856981U Underground personnel positioning system combining Zigbee and Wifi |
| 04/03/2013 | CN202851084U Safety awareness reminding device for underground dangerous type of work |
| 04/03/2013 | CN202851083U Mine pressure monitoring device |
| 04/03/2013 | CN202851082U Communication signal control device |
| 04/03/2013 | CN202851081U Hanging connecting device |
| 04/03/2013 | CN202851051U Mining flame-proofing and intrinsic safety type air-reversing proofing gas automatic discharging apparatus |
| 04/03/2013 | CN202851041U Underground tunneling working face air quantity monitoring alarm device |
| 04/03/2013 | CN202850801U Safe sealed door |
| 04/03/2013 | CN202850175U Integral type water ditch side moldboard |
| 04/03/2013 | CN103024934A Mine communication system, mine illuminating system and wireless router device |
| 04/03/2013 | CN103024663A Underground personnel positioning system |
| 04/03/2013 | CN103024070A Intelligent mine remote monitoring cloud system |
| 04/03/2013 | CN103023557A Method and system for optical communication under mine |
| 04/03/2013 | CN103017673A Real-time continuous monitoring alarming method for tunnel surrounding rock deformation |
| 04/03/2013 | CN103017115A Gas alarming miner light |
| 04/03/2013 | CN103017062A Gas alarming miner light with positioning system |
| 04/03/2013 | CN103016064A Analyzing method and analyzing system of gas accident reason |
| 04/03/2013 | CN103016063A Monitoring system for construction safety |
| 04/03/2013 | CN103016062A Cylinder type power generation-based gas monitoring and lighting dual-purpose system |
| 04/03/2013 | CN103016061A Underground locating and monitoring communication system |
| 04/03/2013 | CN103016060A Mining safety monitoring system |
| 04/03/2013 | CN103016059A Coal level alarm device |
| 04/03/2013 | CN103016058A Gas induction system |
| 04/03/2013 | CN103016057A Prevention method for dynamic pressure area of working face |
| 04/03/2013 | CN103016013A Shield tail brush of alarm-type shield tunneling machine |
| 04/03/2013 | CN102168531B Coupling predication method of outburst risk multivariate information of gas coal and gas |
| 04/03/2013 | CN101525992B Closed cuttings storage device for sulfur-bearing formation underbalanced drilling |
| 03/27/2013 | CN202841537U Mine underground wireless personnel positioning substation having temperature sensing function |
| 03/27/2013 | CN202841311U 矿用数字漏泄移动通信系统 Leakage mine digital mobile communication system |
| 03/27/2013 | CN202838383U Mine personnel positioning identification card |
| 03/27/2013 | CN202837273U Shell of smoke sensor |
| 03/27/2013 | CN202836574U Mine underground navigation device |
| 03/27/2013 | CN202836567U Cable hanging hole positioning device |
| 03/27/2013 | CN202832665U Personnel location identification card capable of identifying human motion for mine use |
| 03/27/2013 | CN202832664U Classified voice audible and visual alarm for mining |
| 03/27/2013 | CN202832663U Bus type voice prompt machine |
| 03/27/2013 | CN202832662U 360-degree visual alarm |
| 03/27/2013 | CN202832661U Underground personnel location system based on four-dimensional (4D) display |
| 03/27/2013 | CN202832660U Mancar wireless alarm device in level of underground coal mine |
| 03/27/2013 | CN202832659U Movable gas monitoring system based on precise locating of underground coal mine |
| 03/27/2013 | CN202832658U Tunnel engineering intelligent monitoring and alarming system |
| 03/27/2013 | CN202832657U Coal miner positioning and management system based on ZigBee technology |
| 03/27/2013 | CN202832656U Explosion door |
| 03/27/2013 | CN202832655U Emergency exit |
| 03/27/2013 | CN202832654U Mine real-time plugging air bag |
| 03/27/2013 | CN202832653U Connector case for mining |
| 03/27/2013 | CN202832652U Methane dilution instrument for mine |
| 03/27/2013 | CN202832633U Disaster relief equipment for coal mine |
| 03/27/2013 | CN202832596U Dynamic-static-combination intelligent early warning anchor rod |
| 03/27/2013 | CN202832117U High-strength steel fireproof access door |
| 03/27/2013 | CN202830894U Plugging device on base of winch hoist |
| 03/27/2013 | CN102997886A Monitoring method for remotely measuring and controlling damage depths of floor strata |
| 03/27/2013 | CN102996179A Detection method of air leakage of roof of coal seam |
| 03/27/2013 | CN102996175A Mine accident escape system |
| 03/27/2013 | CN102996173A Automatic safety device of mining working surface roadway |
| 03/27/2013 | CN102996172A Automatic safety device of mining working surface roadway |
| 03/27/2013 | CN102996171A Full-automatic safety equipment for excavation working face laneway |
| 03/27/2013 | CN102996170A Full-automatic safety equipment for excavation working face laneway |
| 03/27/2013 | CN102996169A Full-automatic safety equipment for stope face roadway |
| 03/27/2013 | CN102996168A Device for comprehensively preventing one-ventilation and three-prevention accidents on tunneling working plane |
| 03/27/2013 | CN102996167A Full-automatic safety equipment for stope face roadway |
| 03/27/2013 | CN102996166A Full-automatic safety equipment for stope face roadway |
| 03/27/2013 | CN102996165A Full-automatic safety equipment for excavation working face laneway |
| 03/27/2013 | CN102996164A Full-automatic safety equipment for excavation working face laneway |
| 03/27/2013 | CN102996163A Full-automatic safety equipment for excavation working face laneway |
| 03/27/2013 | CN102996162A Full-automatic safety equipment for stope face roadway |
| 03/27/2013 | CN102996161A Device for comprehensively preventing one-ventilation and three-prevention accidents on tunneling working plane |
| 03/27/2013 | CN102996157A Water-level change warning device and coal mine gas extraction system |
| 03/27/2013 | CN102174900B Top plate displacement monitoring device based on pretightening force |
| 03/20/2013 | CN202818621U Underground positioning system using TOF technology principle based on Zigbee |
| 03/20/2013 | CN202818611U Downhole personnel positioning system used for mine |
| 03/20/2013 | CN202815878U A device for identity authentication of workers entering mine wells |
| 03/20/2013 | CN202815859U Information automatic identification system for gas extraction diversion pipe |
| 03/20/2013 | CN202810944U Coal position monitoring and alarming device for coal bunker under well |
| 03/20/2013 | CN202810943U 煤矿安全监控系统 Mine Safety Monitoring System |
| 03/20/2013 | CN202810942U Well patrol record and external invasion alarm system of oil well |
| 03/20/2013 | CN202810941U Continuous tube circuit shunt device |
| 03/20/2013 | CN202810940U Power supply system using gas power station as coal mine emergency power supply point |
| 03/20/2013 | CN202810939U Vehicle-mounted workover machine transfer case |
| 03/20/2013 | CN202810938U Round pressure-proof and blast-proof window for mine |
| 03/20/2013 | CN202810937U Rectangular mining pressure-proof and explosion-proof window |
| 03/20/2013 | CN202810790U Safety monitoring protection device for coal-fired hot-blast stove |
| 03/20/2013 | CN102983909A Protecting device capable of preventing mine and tunnel from accident through communication cables |
| 03/20/2013 | CN102982648A Monitoring method for early spontaneous combustion of coal bed by radon measurement technique |
| 03/20/2013 | CN102979755A Embedded data acquisition system-based mechanical fault diagnosis device of mining fan |
| 03/20/2013 | CN102979579A Method for analyzing coal and gas outburst risk in real time |
| 03/20/2013 | CN102979578A Downhole multifunctional personnel location distress system |
| 03/20/2013 | CN102979577A Sealing capsule and application thereof in coal mine |
| 03/20/2013 | CN102979576A Multi-stage orifice pipe quick fixing device |
| 03/20/2013 | CN102979566A Device for preventing one ventilation and three prevention accidents of driving face in comprehensive mode |
| 03/20/2013 | CN102979565A Full-automatic safety equipment for driving working face roadway |
| 03/20/2013 | CN102979564A Stope face roadway full-automatic safety equipment |
| 03/20/2013 | CN102979563A Full-automatic safety equipment for driving working face roadway |
| 03/20/2013 | CN102979562A Full-automatic safety equipment for driving working face roadway |
| 03/20/2013 | CN102979561A Full-automatic safety equipment for driving working face roadway |
| 03/20/2013 | CN102979560A Stope face roadway full-automatic safety equipment |
| 03/20/2013 | CN102979559A Device for preventing one ventilation and three prevention accidents of driving face in comprehensive mode |
| 03/20/2013 | CN102979558A Device for preventing one ventilation and three prevention accidents of stope face in comprehensive mode |