Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21F - Safety devices, transport, filling-up, rescue, ventilation, or drainage in or of mines or tunnels › E21F 17 - Methods or devices for use in mines or tunnels, not covered elsewhere
Patents for E21F 17 - Methods or devices for use in mines or tunnels, not covered elsewhere (4,758)
11/2012
11/14/2012CN102777212A Monitoring method of tunnel gas
11/14/2012CN102777211A Acousto-optic voice alarm device for mine
11/14/2012CN102777204A Mine spray sensor and mine spray dust-fall monitoring system
11/14/2012CN102777201A Ventilation method for exploiting short distance coal bed in fire zone based on positive pressure ventilation system
11/14/2012CN102777179A Method for controlling mine power capacity source by using region power planning
11/14/2012CN101922309B Method for preventing mine gas from exploding and implementation device thereof
11/07/2012CN202524561U Device for realizing underground mine positioning and navigation
11/07/2012CN202520383U Tunnel crossing construction disturbance grading early warning system in power tunnel
11/07/2012CN202520382U Coal mine safety monitoring device based on data transmission
11/07/2012CN202520381U Grouting over-pressure power-off and under-pressure alarm device
11/07/2012CN102768040A Mine underground navigation device
11/07/2012CN102768027A Method for monitoring whole-process safe displacement of underground surrounding rock
11/07/2012CN102767395A Anti-seepage method for mine underground reservoirs
11/07/2012CN102767394A Distributed underground reservoirs and flow guide method thereof
11/07/2012CN102765431A Trolley for tunnel detection radar
11/07/2012CN102061722B Double-pump automatic alternation water charging system of coal mine hydrostatic tank
11/07/2012CN101788546B Coal mine underground mobile gas beam tube sampling and monitoring device
10/2012
10/31/2012CN202514078U Coal piling sensor with wireless function
10/31/2012CN202512105U Portable methane alarm checking device
10/31/2012CN202510999U Signal indicator lamp for mine
10/31/2012CN202510164U Acousto-optic language alarm device
10/31/2012CN202510160U Wireless portable living environment parameter measuring device for escape capsule
10/31/2012CN202510099U Intelligent display control system of deep hole drill carriage for coal mine
10/31/2012CN102761987A System for monitoring transportation process of mining belt conveyor by using wireless sensor
10/31/2012CN102758648A Coal mine monitoring device
10/30/2012US8297561 Pipe support
10/24/2012CN202500613U Mining intrinsically safe type pressure monitoring device
10/24/2012CN202500612U A mine-used voice acousto-optic annunciator
10/24/2012CN202500611U Novel acousto-optic combination annunciator
10/24/2012CN202500610U Smoke sensor
10/24/2012CN202500609U Intelligent type digital display methane alarm head lamp
10/24/2012CN202499675U Hoist of metro tunnel flood gate
10/24/2012CN102749894A Mine water treatment electrical control device for underground coal mines and mine water treatment system
10/24/2012CN102749214A Detecting device for side walls of tunnels
10/24/2012CN102748076A Shutdown audible and visual alarm for coal mine main fan
10/24/2012CN102748075A Method for determining minimum design operation pressure of underground salt cavern gas storage
10/24/2012CN102748074A Power supply system with gas power generation station as emergent security power-supply point of coal mine
10/24/2012CN102748073A Distinguishing method of three zones of spontaneous combustion of high-gas gob
10/24/2012CN102748067A Mining underground vital sign detecting system and vital sign positioning and identifying device
10/24/2012CN102748049A Mechanical operating machine in roadway
10/24/2012CN101526009B Wall rock destabilization acousto-optic-electric integrated monitoring system and monitoring method thereof
10/24/2012CN101446193B Device and method for detecting coal seam gas pressure and coal wall stress
10/19/2012CA2773764A1 Underground utility vault inspection system and method
10/18/2012WO2012139163A1 A system and method for monitoring movement in strata
10/17/2012CN202496119U Mine searchlight
10/17/2012CN202495944U Subsystem of downhole broadcasting substation
10/17/2012CN202493291U Anti-fire alarm and control system for coal seam drilling construction
10/17/2012CN202493290U Personnel management system for mine
10/17/2012CN202493289U Mine flood monitoring and early warning system
10/17/2012CN202493288U Semicircular chamber type underground fire-fighting equipment warehouse structure
10/17/2012CN102741505A Intrinsically safe connection unit with a network interface, intrinsically safe appliance and network interface for it
10/17/2012CN102733856A Automatic inspection system for inclined drift adhesive tape transportation
10/17/2012CN102733855A Mobile gas monitoring system and method based on accurate positioning in underground coal mine
10/17/2012CN102733854A Mine emergency wireless collection system and collection method based on remote distribution of flying machine
10/17/2012CN102733853A Intelligent sensor for collecting stress
10/17/2012CN102733852A Water pipe hanger device
10/17/2012CN102733847A Mine roadway oval double-open type all-automatic disaster plugging and prevention device
10/17/2012CN102733846A Oval single-open full-automatic disaster blocking-preventing device used in mine roadway
10/17/2012CN102733845A Full-automatic disaster block prevention device with double-open tablet for mine
10/17/2012CN101781996B Emergency airtight door used for connecting passage construction
10/10/2012CN202487086U Wireless explosion-proof display
10/10/2012CN202486984U Mining stop-go signal control indication device
10/10/2012CN202486085U Methane carbon monoxide tester
10/10/2012CN202483631U Three-color-lamplight voice gas alarm
10/10/2012CN202483630U Coal mine worker positioning and safety induction terminal based on Internet of things
10/10/2012CN202483629U Multifunctional all-dimensional voice alarm system
10/10/2012CN202483628U Bluetooth wireless management system for underground people positioning and gas alarming
10/10/2012CN202483627U Hazardous gas detection alarming system of multi-function mine lamp
10/10/2012CN202483626U Water-spraying fireproof roller blind device special for tunnel
10/10/2012CN102724483A Mobile monitoring system integrating transceiving and explosion protection
10/10/2012CN102720540A Roof disaster monitoring system
10/10/2012CN102720539A Mine man-machine positioning and production environment monitoring method based on wireless technology
10/10/2012CN102720538A Inverted-pear-shaped underground salt cavern gas storage field and establishing method thereof
10/10/2012CN102720529A Hot air conveying automatic blocking explosion-proof device of hot air furnace for coal mine
10/04/2012WO2012130138A1 Multi-information coupling prediction method of coal and gas outburst danger
10/03/2012CN202475883U WiFi based active gas temperature early warning mine lamp
10/03/2012CN202469417U Bracket for assembling mining voice acousto-optical signal device
10/03/2012CN202467930U Fan starter for coal mine
10/03/2012CN202467929U On-line monitoring system for performance of filling body
10/03/2012CN202467928U Embedded gas detection LED (Light Emitting Diode) alarm lamp
10/03/2012CN202467927U Explosion-proof and intrinsic safety acousto-optic annunciator for mining
10/03/2012CN202467914U Miner personal safety system
10/03/2012CN202467906U Intelligent mine escape capsule
10/03/2012CN102711040A Underground coal mine unidimensional positioning method and system based on wireless sensor network
10/03/2012CN102705013A System and method for real-time monitoring of folding type earthwork transport machine
10/03/2012CN102705012A Monitoring system of coal roadway roof separation based on M-BUS
10/03/2012CN102705011A Top layer pressure detection system for coal mine roadway
10/03/2012CN102705010A Working surface outburst risk evaluation index system analysis method
10/03/2012CN102705009A Mine information system
10/03/2012CN102705008A Coal mine safety monitoring system based on wireless network
10/03/2012CN102705007A Monitoring system for explosion door of coal mine air shaft
10/03/2012CN102704981A Self-adaptive intelligent control system for ventilator
10/03/2012CN102704979A Intelligent ventilation management system for coal mine
10/03/2012CN101906985B Method for remotely monitoring and controlling hydraulic support on underground working surface
10/02/2012US8276853 Air hose support clip to prevent lateral loading
09/2012
09/26/2012CN202455542U Monitoring system based on wireless sensor network
09/26/2012CN202455362U Emergency command communication system for mine
09/26/2012CN202453344U Dual-probe intelligent remote-control methane sensing device
09/26/2012CN202451449U Security detection device of mine local fan
09/26/2012CN202451220U Intelligent anti-explosive interlocking device
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