| Patents for E21F 1 - Ventilation of mines or tunnels; Distribution of ventilating currents (2,288) |
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| 02/19/2014 | CN203441517U Ventilation device capable of effectively reducing poisonous air in mine transporting tunnel |
| 02/19/2014 | CN203441516U Ventilation structure of sliding and blasting system and capable of effectively removing dust and cooling |
| 02/19/2014 | CN103591041A 煤矿智能化局部通风系统 Mine intelligent local ventilation systems |
| 02/19/2014 | CN103590854A Mine ventilation duct air flow switch sensor |
| 02/19/2014 | CN103590848A Brattice-less machine stand ventilation performance study device and method |
| 02/12/2014 | CN203430572U Working state detection and alarm device for mine air supply system |
| 02/12/2014 | CN203430553U Vertical shaft buffer explosion door |
| 02/12/2014 | CN203430552U Telescopic ventilator |
| 02/12/2014 | CN203430551U 煤矿巷道通风控制系统 Coal mine tunnel ventilation control system |
| 02/12/2014 | CN203430550U Forced ventilation cloth curtain used for manhole well |
| 02/05/2014 | CN203420726U Dedusting system of fully mechanized excavation face of rock roadway |
| 02/05/2014 | CN203420725U Combined air door |
| 02/05/2014 | CN102392675B Method and device for collecting ventilation air methane on top of diffuser of main fan of coal mine |
| 02/05/2014 | CN102323998B Method for checking wind-friction resistance value of mine roadway |
| 02/05/2014 | CN102235133B Opening system for pressure relief windows |
| 01/30/2014 | WO2014015376A1 A duct |
| 01/29/2014 | CN203412613U 矿井通风安全监控系统 Mine Ventilation Safety Monitoring System |
| 01/29/2014 | CN203412612U Forced ventilation device for railway tunnels |
| 01/29/2014 | CN203412611U Air volume distribution and control system of long and large tunnel ventilation system |
| 01/29/2014 | CN103543697A Clustered intelligent control method for traffic tunnel devices |
| 01/29/2014 | CN103541763A Guiding buffering anti-explosion device for vertical air shaft |
| 01/29/2014 | CN103541756A Novel damper ditch air leakage preventer |
| 01/29/2014 | CN103541755A W-shaped ventilation method for fully-mechanized top coal caving working face |
| 01/23/2014 | US20140024304 Mine ventilation door with wings and slidable or pocket personnel door |
| 01/23/2014 | US20140020296 Robust mine ventilation door with single actuation system |
| 01/22/2014 | CN103527236A Gas tunnel mixed type ventilation method |
| 01/15/2014 | CN203397169U Novel local fan monitoring system |
| 01/15/2014 | CN203394562U Negative pressure wind tunnel system |
| 01/15/2014 | CN103510975A Fan suspension method for shield tunnel |
| 01/15/2014 | CN103510974A Method for non-stop ventilation of mine |
| 01/15/2014 | CN102425431B Ultra-close coal layer mining roadway distributing method |
| 01/08/2014 | CN103498692A Water-saving drag-reducing spray device for recovering mine exhaust heat and designing method |
| 01/08/2014 | CN102678121B Layered top-controlling filling mining method for residual ores in deep hole in diskless area |
| 01/08/2014 | CN102619547B Ventilation, energy conservation and warming system for extremely cold tunnel |
| 01/01/2014 | CN203374502U Interlocked circuit breaker system for gas tunnel construction |
| 01/01/2014 | CN103485814A Wind path system for mine |
| 01/01/2014 | CN103485800A Shaft underworkings cooling system |
| 01/01/2014 | CN102518463B Recycling type smoke control method of tunnel |
| 01/01/2014 | CN102425443B Tunnel smoke control device for supplying air from parallel tunnels |
| 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 |
| 12/26/2013 | US20130340872 System and apparatus for connecting a gas source to a thermal oxidiser |
| 12/25/2013 | CN203362211U Mine air door protection automatic interlocking car stop |
| 12/25/2013 | CN203362210U Light-weight negative-pressure wind tube |
| 12/25/2013 | CN203362209U Positive-pressure air tube |
| 12/25/2013 | CN203362208U Irregular air tube |
| 12/25/2013 | CN203362207U Negative-pressure wind tube |
| 12/25/2013 | CN203362206U Anti-dropping portable air duct sensor |
| 12/25/2013 | CN203362165U Safety and ventilation structure during shaft building period |
| 12/25/2013 | CN103470293A Power-assisted tower of return air shaft |
| 12/25/2013 | CN103470267A Long tunnel fast construction process |
| 12/18/2013 | EP2674657A1 Method for connecting two flexible containers |
| 12/18/2013 | CN203347829U Efficient protective screen |
| 12/18/2013 | CN203347826U Mining double air door control device |
| 12/18/2013 | CN203347825U Mining non-pressurized air door |
| 12/18/2013 | CN203347824U Coal mine no-frame air door |
| 12/18/2013 | CN203347823U Inflatable isolating device for tunnel ventilation construction |
| 12/18/2013 | CN203347822U Tunnel intelligent fan management system |
| 12/18/2013 | CN103452583A Coal mine ventilation lifesaving pipeline |
| 12/18/2013 | CN103452297A Waterproof device used for ventilating duct |
| 12/12/2013 | WO2013181706A1 A mesh and method for making the mesh |
| 12/11/2013 | CN203335112U Vertical air shaft anti-explosion door with automatic resetting function |
| 12/11/2013 | CN203335111U Disrotatory main ventilator self-control changeover device |
| 12/11/2013 | CN103438011A Tunnel ventilation fan with adjustable speed |
| 12/04/2013 | CN203324752U Flame-proof and intrinsic safety type double air door controller used for mine |
| 12/04/2013 | CN203321564U Air guide device with double automatic switchover fans |
| 12/04/2013 | CN203321563U 矿井通风与瓦斯安全监控系统 Mine Ventilation and Gas Safety Monitoring System |
| 12/04/2013 | CN203321519U Full-automatic belt lane wind current isolation device |
| 12/04/2013 | CN103422880A Stone drift fully-mechanized excavating surface dust removing system |
| 12/04/2013 | CN103422878A Combined air door |
| 12/04/2013 | CN103422877A Underground coal mine ventilation and dust removal safety system |
| 12/04/2013 | CN103422876A Environment-friendly coal mine underground ventilation and dedusting safety system |
| 12/04/2013 | CN103422875A Distribution control device for air quantity of long tunnel ventilating system and distribution control method thereof |
| 11/27/2013 | CN203308496U Air-reversing fire protection device for mine belt transport lane |
| 11/27/2013 | CN203308493U Anti-explosion door body of vertical air shaft |
| 11/27/2013 | CN203308492U Single-leaf balance compound manual air door |
| 11/27/2013 | CN203308491U Positive-negative linkage pneumatic air door |
| 11/27/2013 | CN103410552A Automatic resetting device for spare anti-explosion well lid of mining air well |
| 11/27/2013 | CN103410551A Data analysis system for ventilation safety |
| 11/27/2013 | CN103410550A Method for constructing underground air crossing of coal mine |
| 11/27/2013 | CN103410549A System and method by means of power plant waste heat for conducting aeration cooling on mine |
| 11/20/2013 | CN203296796U Ventilation cooling device for mine |
| 11/20/2013 | CN103397897A Deformation preventing air door under shaft |
| 11/20/2013 | CN103397896A Air type lockout biparting air door |
| 11/20/2013 | CN102425442B Variable-frequency regulation ventilation system and method for coal mining area |
| 11/20/2013 | CN102418547B Poking wheel type air quantity adjustable air window |
| 11/20/2013 | CN102230395B Multifunctional hole packer capable of plugging and injecting |
| 11/14/2013 | DE102012207962A1 Suspension assembly for mounting jet fan on ceiling e.g. tunnel ceiling, has fan axis whose azimuth angle of front mounting location is identical to azimuth angle of rear mounting location |
| 11/13/2013 | CN203285474U Water mist spray fire resisting rolling shutter device fire extinguishing system for tunnels |
| 11/13/2013 | CN203285472U Mining device for enabling belts to pass through air door |
| 11/13/2013 | CN203285471U Mine air door |
| 11/13/2013 | CN102562066B Method for mechanically mining coal by using steep seam pseudo inclination bracing type retractable flexible shield support |
| 10/30/2013 | CN203257448U Wartime defense ventilation switchover system of urban rail traffic engineering |
| 10/30/2013 | CN203257447U Solar heat flow tunnel ventilation system |
| 10/30/2013 | CN203257425U Tunnel daylighting and ventilation integrated device |
| 10/30/2013 | CN103375173A Novel anti-explosion door of vertical air shaft |
| 10/30/2013 | CN103375172A Mining push-pull type air door |
| 10/30/2013 | CN102418545B Automatic air quantity controller |
| 10/23/2013 | CN203248182U Anti-cracking air return vertical shaft |
| 10/23/2013 | CN203248181U Anti-cracking air return vertical shaft fan drift |