| Patents for E21F 17 - Methods or devices for use in mines or tunnels, not covered elsewhere (4,758) |
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| 01/08/2014 | CN103498700A Mining mine end data monitoring device and system with voice communication and alarming functions |
| 01/08/2014 | CN103498699A Predicating system of mine operation face roof weight |
| 01/08/2014 | CN103498698A Double type subway door sealing and separating device |
| 01/01/2014 | CN203374502U Interlocked circuit breaker system for gas tunnel construction |
| 01/01/2014 | CN203374318U Movable outboard environment detecting device for rescue capsule |
| 01/01/2014 | CN203374317U Mutual-communication type roadway plugging device |
| 01/01/2014 | CN203374316U Flexible air bag used for coal face |
| 01/01/2014 | CN203374315U Portable gas curtain used for coal face |
| 01/01/2014 | CN103486446A Digital miner light system |
| 01/01/2014 | CN103485826A Alarm method of coal and gas burst accidents |
| 01/01/2014 | CN103485825A Method for carrying out underground coal mine temperature early warning through time difference |
| 01/01/2014 | CN103485824A Mining mine-side data monitoring device and system with video monitoring function |
| 01/01/2014 | CN103485823A Roof separation layer monitoring device |
| 01/01/2014 | CN103485822A Combined quick blocking and wall retaining device |
| 01/01/2014 | CN103485747A Automatic pressure-adding borehole sealing device and method |
| 01/01/2014 | CN103478963A Intelligent coal mine safety monitoring helmet |
| 01/01/2014 | CN102410044B Vertical ventilating shaft explosion door capable of automatically resetting after blast release and pressure relief |
| 01/01/2014 | CN102003202B Construction method of safety emergency rescue and escape system for mine |
| 12/31/2013 | US8616505 Articulated article holder |
| 12/25/2013 | CN203365456U A hoisting pipe column early warning apparatus |
| 12/25/2013 | CN203362231U Trackless transport vehicle explosion protection system |
| 12/25/2013 | CN203362230U Tunnel gas monitoring system |
| 12/25/2013 | CN203362229U Strong rock burst tunnel micro-seismic monitoring system |
| 12/25/2013 | CN203362228U Laneway stability monitoring system based on internet of things technology |
| 12/25/2013 | CN203362227U Substation-based high pressure real-time monitoring system of return air shaft of coal mine |
| 12/25/2013 | CN203362226U Early warning system for wall deformation security based on firefly algorithm |
| 12/25/2013 | CN203362225U GPS control point layout structure used for water tunnel |
| 12/25/2013 | CN203362206U Anti-dropping portable air duct sensor |
| 12/25/2013 | CN103470305A System and method for preventing and controlling potential hazards in gas extraction |
| 12/25/2013 | CN103463753A Urban road, highway and tunnel integrated miniature fire station for supplying powder by utilizing clean energies |
| 12/25/2013 | CN102587986B Tunnel construction informatization dynamic monitoring system and monitoring method thereof |
| 12/25/2013 | CN102587983B Comprehensive early-warning observation method for coal mine rock burst |
| 12/25/2013 | CN102536270B Tunnel seepage protection method for soft soil stratum by existing shield method |
| 12/19/2013 | US20130336726 Apparatus and method for anchor bolt grouting |
| 12/18/2013 | CN203352702U A mining monitoring illumination system |
| 12/18/2013 | CN203352701U Tunneling working face video monitoring apparatus of tunneling machine |
| 12/18/2013 | CN203347844U Hydrological dynamic monitoring and alarming system for coal mine |
| 12/18/2013 | CN203347843U Mining flame-proof and intrinsically-safe type sound-light alarm device |
| 12/18/2013 | CN203347842U Large-volume sump for underground mine |
| 12/18/2013 | CN203347841U Arrangement structure of smoke-proof system of tunnel emergency exit |
| 12/18/2013 | CN203347840U Underground pipeline mounting hanger for mines |
| 12/18/2013 | CN203347822U Tunnel intelligent fan management system |
| 12/18/2013 | CN103458040A Equipment abrasion state wireless monitoring device based on internet of things |
| 12/18/2013 | CN103452588A Power-loss warning device of coal mine local fan backup power |
| 12/18/2013 | CN103452587A Mine-used intelligent watertight gate |
| 12/18/2013 | CN102493835B Mine safety production monitoring system |
| 12/18/2013 | CN102337904B Method for retaining gob-side tunnel |
| 12/17/2013 | US8608117 Isolator having push and turn mounting |
| 12/11/2013 | CN203337147U Protection-type tunnel monitoring and point measuring device |
| 12/11/2013 | CN203335133U Downhole audio broadcasting alarm device |
| 12/11/2013 | CN203335132U Mine personnel accurate positioning and real-time management system |
| 12/11/2013 | CN203335131U Mine water disaster monitoring and forecasting system |
| 12/11/2013 | CN203335130U Gas density monitoring device for mine |
| 12/11/2013 | CN203335129U Mining wireless pressure acquisition substation |
| 12/11/2013 | CN203335128U Network digital straight rod direct-reading roof separation instrument |
| 12/11/2013 | CN203335127U Network digital parallel direct-reading roof separation instrument |
| 12/11/2013 | CN203335112U Vertical air shaft anti-explosion door with automatic resetting function |
| 12/11/2013 | CN103437815A Safe auxiliary device for drilling well site of wireless sensor network |
| 12/11/2013 | CN103437814A Gob-side entry retaining mine ground pressure monitoring system |
| 12/11/2013 | CN103437813A Tunnel construction survey and intelligent analysis system |
| 12/11/2013 | CN103437763A Underground remote control shoveling robot |
| 12/11/2013 | CN101586471B A tube of fabric reinforced pvc |
| 12/10/2013 | US8603332 Method of constructing septic system including pipe support |
| 12/10/2013 | US8602365 Hanger for hanging an object from a support rod |
| 12/04/2013 | CN203325007U Mode identification apparatus and system of fully mechanized coal mining face abnormal statuses |
| 12/04/2013 | CN203321595U Underground portable positioning device |
| 12/04/2013 | CN203321594U Device for monitoring fatigue resistance state of coal mine roadway |
| 12/04/2013 | CN203321593U Bluetooth wireless linkage device for detecting pit-bottom gas concentration |
| 12/04/2013 | CN203321592U Alarm power-off monitoring system for coal mine earthquake |
| 12/04/2013 | CN203321591U Mining flameproof audible and visual alarm |
| 12/04/2013 | CN203321590U Movable underground mine information monitoring and personnel positioning device |
| 12/04/2013 | CN203321589U Coal mine return air shaft high-pressure real-time monitoring system based on repeater |
| 12/04/2013 | CN203321588U Coal mine return air shaft high-pressure real-time monitoring system based on photoelectric transmission |
| 12/04/2013 | CN203321587U Movable type difference supplementation limiting device |
| 12/04/2013 | CN203321544U Hydraulic support |
| 12/04/2013 | CN203321260U Down hole refuge chamber second sealing door |
| 12/04/2013 | CN203321170U Down hole refuge chamber air-tight door |
| 12/04/2013 | CN103423583A High-pressure gas preservation method |
| 12/04/2013 | CN103422890A Novel anchor rod pulling resistance alarm and using method thereof |
| 12/04/2013 | CN103422889A M-BUS based integrated coal roadway roof monitoring system |
| 12/04/2013 | CN103422888A Mine ventilation multiparameter detector |
| 12/04/2013 | CN103422887A Wireless mining rescue video communication system |
| 12/04/2013 | CN103422886A Artificial retaining dam for coal mine distributed underground reservoir and damming method thereof |
| 12/04/2013 | CN103422867A Tunnel construction perturbation control method based on digitization |
| 12/04/2013 | CN103422469A Artificial retaining dam for coal mine underground reservoir and connecting method of artificial retaining dam and coal pillar dam bodies as well as surrounding rocks |
| 12/04/2013 | CN102169078B Equipment quality control method for employing rotary ferrograph |
| 12/04/2013 | CN102162368B Coal mine safety monitoring system online tester and testing method |
| 12/04/2013 | CN101626496B Inclined lane track condition wireless mobile video monitoring system |
| 11/27/2013 | CN203309828U Informational miner lamp |
| 11/27/2013 | CN203308522U Simple gas alarming circuit device |
| 11/27/2013 | CN203308521U Blasting mining face signal device convenient to clamp |
| 11/27/2013 | CN203308520U Portable mine oxygen deficit and gas detection integrated alarm |
| 11/27/2013 | CN203308519U Novel coalmine safety-warning device adopting new energy |
| 11/27/2013 | CN203308518U Integrated monitoring system of mine pressure |
| 11/27/2013 | CN203308517U Coal mine gas leaking alarm device |
| 11/27/2013 | CN203308516U System for monitoring various harmful gases in tunnel |
| 11/27/2013 | CN203308515U Multi-screen mine monitoring system |
| 11/27/2013 | CN203308514U Gas detecting and positioning system |
| 11/27/2013 | CN203308513U Closed energy absorption structure of convex cage goaf |
| 11/27/2013 | CN203308512U Water injection device for coal-bed shallow hole |