| Patents for E21F 17 - Methods or devices for use in mines or tunnels, not covered elsewhere (4,758) |
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| 07/10/2013 | CN203050795U Intrinsic safety distribution box |
| 07/10/2013 | CN203050794U Multi-Agent coal mine tunnel air quantity information monitoring system |
| 07/10/2013 | CN203050793U Underground coal mine multi-Agent temperature monitoring system |
| 07/10/2013 | CN203050792U Intelligent under-shaft early-warning and help-calling system |
| 07/10/2013 | CN203050791U Temperature monitoring device in underground coal mine |
| 07/10/2013 | CN203050790U Testing device for predicting coal bed released gas expansion energy |
| 07/10/2013 | CN203050789U Remote safety monitoring system of air shaft in coal mine |
| 07/10/2013 | CN203050788U Mining intrinsically-safe acousto-optic alarm |
| 07/10/2013 | CN203050787U Mining space abrupt-change unstability early warming device |
| 07/10/2013 | CN203050786U Mine intrinsic safety display |
| 07/10/2013 | CN203050785U Mine micro-seismic monitoring system |
| 07/10/2013 | CN203050784U Mine communication alarming system |
| 07/10/2013 | CN203050783U Underground positioning and monitoring communication system |
| 07/10/2013 | CN203050782U Underground multi-functional personnel positioning distress system |
| 07/10/2013 | CN203050781U Water-proof gate capable of being opened and closed with assistant power under mine shaft |
| 07/10/2013 | CN103200220A Mine two-way through ground communication/emergency rescue command and dispatch communication system and device |
| 07/10/2013 | CN103199922A Coal mining working face communication system based on visible light communication and method thereof |
| 07/10/2013 | CN103199490A Gas power-off device used for coal mining machine of model MXG-500 in coal mine |
| 07/10/2013 | CN103195479A Emergency flood gate device for metro tunnel across river |
| 07/10/2013 | CN103195478A Cable hanging device |
| 07/10/2013 | CN103195456A Intelligent anchor rod early-warning and monitoring system for surrounding rock disasters of roadway |
| 07/10/2013 | CN103195433A Method for speedy drivage in large section coal road |
| 07/10/2013 | CN103191534A Intelligent interlocking compressed oxygen self-rescuer |
| 07/10/2013 | CN101798923B System and method for remote control coal mine evacuation working face advance detection and forecasting |
| 07/03/2013 | CN203037608U Underground methane monitoring and positioning system |
| 07/03/2013 | CN203035263U Underground ventilation monitoring system |
| 07/03/2013 | CN203035262U Mining audible and visual alarm |
| 07/03/2013 | CN203035261U Multipoint measurement device for gas concentration in rescue capsule |
| 07/03/2013 | CN203035260U Forcing fan room fault remote automatic alarming device |
| 07/03/2013 | CN203035259U Load-carrying structure of underground waterproof door |
| 07/03/2013 | CN203035258U Mine gas crib |
| 07/03/2013 | CN203029470U Mine gas detection dustproof spectacles |
| 07/03/2013 | CN103188604A Method and device achieving underground mine positioning and navigation |
| 07/03/2013 | CN103184887A Method for underground tunnel drilling construction and geological information inversing |
| 07/03/2013 | CN103184886A Measuring component of MEMS (Micro-electromechanical Systems) technology-based gas alarm and preparation method of measuring component |
| 07/03/2013 | CN103183946A Floor of powder magazine in underground coal mine |
| 07/03/2013 | CN102102533B Method for forecasting real-time measurement of spatial geometrical information of coal rock dynamic disaster |
| 06/26/2013 | CN203027297U Intelligent remote monitoring system for mine based on Wi-FI (wireless fidelity) wireless sensor network |
| 06/26/2013 | CN203022822U Miner locating device of underground coal mine |
| 06/26/2013 | CN203022821U Coal mine safety monitoring system substation |
| 06/26/2013 | CN203022820U Underground personnel positioning transmission substation |
| 06/26/2013 | CN203022819U Coal mine air safety monitoring and alarming system |
| 06/26/2013 | CN203022818U Intrinsic safety display screen for mine |
| 06/26/2013 | CN203022817U Coal mine blasting monitoring system |
| 06/26/2013 | CN203022816U Open pit coal mine underground reservoir |
| 06/26/2013 | CN203022815U Flood-proof protective air-tight portioning door |
| 06/26/2013 | CN203022814U Prefabricated partition wall structure of lateral smoke exhaust passageway of shield tunnel |
| 06/26/2013 | CN103174462A Permeable water source real-time monitoring recognition device and permeable water source real-time monitoring recognition method |
| 06/26/2013 | CN103174461A Intelligent anti-explosive interlocking device |
| 06/26/2013 | CN103174460A Radio frequency identification device (RFID) mine positioning system |
| 06/26/2013 | CN103174459A Method for installing and retracting working face roadway advanced support steel beam |
| 06/26/2013 | CN103174458A Method for embedding water seepage pressure gage devices in deep tunnel encountering water-rich silty-fine sand layer |
| 06/26/2013 | CN103174455A Method of preventing disaster-avoiding chamber seepage and permeating water disasters |
| 06/26/2013 | CN103174454A Coal mine downhole help calling device |
| 06/26/2013 | CN103174449A Coal rock recognition method using coal rock recognition processor |
| 06/26/2013 | CN103174418A Advanced detection system and method for excavation hazards |
| 06/26/2013 | CN101956566B Dynamic disaster monitoring substation of coal rock |
| 06/19/2013 | CN203015028U Signal processor used for mine disaster rescue communication system |
| 06/19/2013 | CN203014975U Mining explosion-proof camera |
| 06/19/2013 | CN203014852U Digital audio frequency processing system used for formation signal transmission |
| 06/19/2013 | CN203014799U Wireless communication system capable of directly intercommunicating with ground in pit |
| 06/19/2013 | CN203014798U Wireless communication machine used for mine disasters |
| 06/19/2013 | CN203008978U Tumbler type wireless communication relay unit for emergency rescue |
| 06/19/2013 | CN203008977U Distributing device for underground coal mine emergency rescue wireless communication equipment |
| 06/19/2013 | CN203008976U Water supply cut-off warning device for gas pump |
| 06/19/2013 | CN203008975U Staff posture detection identification card |
| 06/19/2013 | CN203008974U Device for detecting excavated earth volume of shield tunneling machine |
| 06/19/2013 | CN203008973U Gas monitoring and lighting double-purpose system based on air cylinder type electricity generation |
| 06/19/2013 | CN203008972U Mining multi-parameter collector |
| 06/19/2013 | CN203008971U Radon concentration gas outburst predetermination device |
| 06/19/2013 | CN203008970U Rapid fire-proof closed door |
| 06/19/2013 | CN203008969U Flexible wave trapping wall used for underground blast impact disaster protection |
| 06/19/2013 | CN103167524A Location accuracy assessment method of underground coal mine personnel location system based on TOA technique |
| 06/19/2013 | CN103161508A Underground positioning system based on wireless data transmission network |
| 06/19/2013 | CN103161507A Mine ventilation parameter wireless test system |
| 06/19/2013 | CN103161506A Gas monitoring system with oxygen control for human life support in enclosed refuge spaces |
| 06/19/2013 | CN103161505A Mine safety monitoring device |
| 06/19/2013 | CN103161504A Mine alarm linkage system for emergency |
| 06/19/2013 | CN103161503A Mine on-line monitoring system |
| 06/19/2013 | CN103161502A Mine downhole power failure alarm circuit |
| 06/19/2013 | CN103161501A Mine downhole carbon dioxide content overstepping alarm system |
| 06/19/2013 | CN103161500A Mine seism audible-visual alarm circuit |
| 06/19/2013 | CN103161499A Division method for underground coal bed outburst and dangerous zones |
| 06/19/2013 | CN103161496A Mine accident amphibious continuous track rockier arm type search and rescue vehicle |
| 06/19/2013 | CN103161470A Construction method for shield machine to penetrate through large caliber pipeline in long distance |
| 06/19/2013 | CN103161469A Method for excavating vertical shaft to underground repair pipe-jacking tool pipe |
| 06/19/2013 | CN103159122A Inclined well lifting transportation off road warning device |
| 06/19/2013 | CN102053136B Plateau non-coal mine underground air environment parameter real time monitor |
| 06/19/2013 | CN101812983B Coal mine drifting laser orientation instrument bracket and installation method thereof |
| 06/19/2013 | CN101806229B Mine roof safety evaluation method based on multi-target monitoring data fusion |
| 06/19/2013 | CN101488240B Entry and exit confirmation system and method |
| 06/13/2013 | WO2013082662A1 Pump apparatus |
| 06/13/2013 | CA2858180A1 Pump apparatus |
| 06/12/2013 | CN202998110U An infrared receiver |
| 06/12/2013 | CN202998082U Coal-mine-used wireless access monitoring substation |
| 06/12/2013 | CN202994777U Gas sensor protective device |
| 06/12/2013 | CN202992979U Light-emitting diode (LED) methane alarming mining lamp |
| 06/12/2013 | CN202991141U Mining underground personnel positioning sensing device |
| 06/12/2013 | CN202991140U Gas monitoring system |
| 06/12/2013 | CN202991139U Tunnel construction safety pre-warning management system |