| Patents for E21F 1 - Ventilation of mines or tunnels; Distribution of ventilating currents (2,288) |
|---|
| 10/23/2013 | CN103362554A Working state detection and alarm device for mine air-supply system |
| 10/23/2013 | CN103362529A Automatic integral interlocking device for coal mine air doors |
| 10/23/2013 | CN103362528A Shaft type tunnel ventilation duct and self-generating system |
| 10/23/2013 | CN102305095B Flat guide ventilation operation system of extra-long deeply-buried road tunnel |
| 10/23/2013 | CN102296963B Construction method for ultra-long deep-buried road tunnel |
| 10/23/2013 | CN102251791B Folded ventilation duct assembly |
| 10/16/2013 | CN203239380U Automatic control wind shield device for belt |
| 10/16/2013 | CN203239379U Practical air door for multi-angle inclined haulage roadway |
| 10/16/2013 | CN203239378U Novel mining wall attachment air duct |
| 10/16/2013 | CN203239377U Mine ventilation structure capable of effectively controlling air flow |
| 10/16/2013 | CN203239376U Tunnel construction ventilation device for partial outburst of gas |
| 10/09/2013 | CN203230604U Mine ventilation device |
| 10/02/2013 | EP2643551A1 System and apparatus for connecting a gas source to a thermal oxidiser |
| 10/02/2013 | CN203223241U Emergency-preventing air door |
| 10/02/2013 | CN203223240U 隧道通风系统 Tunnel Ventilation System |
| 09/25/2013 | CN203214093U Offset W ventilation working face based on small coal pillar connection roadway |
| 09/25/2013 | CN203214091U Ventilating system of processing corner gas ultralimit on actual mining face |
| 09/25/2013 | CN103328769A System and apparatus for connecting a gas source to a thermal oxidizer |
| 09/19/2013 | WO2013135916A1 System and method for electronic control of the rotation speed of a fan impeller |
| 09/18/2013 | CN203201584U Mechanical air door locking device |
| 09/18/2013 | CN203201583U Linkage type ventilation door bottom sill |
| 09/18/2013 | CN203201582U Mine ventilation system of windiness well |
| 09/18/2013 | CN203201581U Efficient circulating ventilation structure for high, deep and straight draw shaft |
| 09/18/2013 | CN203201580U 可移动局扇 Removable local fan |
| 09/18/2013 | CN203201579U Efficient ventilation structure suitable for slope mine channel |
| 09/18/2013 | CN103307044A Vector jet blower |
| 09/18/2013 | CN103307003A Subway tunnel fan with inlet and outlet having high sound insulation performances |
| 09/18/2013 | CN103306704A Vertical ventilating shaft anti-explosion door and method for relieving pressure safely and performing ventilation quickly by using door |
| 09/18/2013 | CN103306703A Mine air door |
| 09/18/2013 | CN103306702A Inflatable isolating device for tunnel ventilation construction |
| 09/18/2013 | CN103306701A Automatic control pressure-equalizing fire preventing and extinguishing system in large area |
| 09/18/2013 | CN102516689B Conductive film for coal mine ventilation tube |
| 09/11/2013 | CN203189052U 风门 Throttle |
| 09/11/2013 | CN203189051U Pressure sensing control coal mine ventilation air gas exhaust hood |
| 09/11/2013 | CN103291346A Uninterrupted ventilation device and method for coal mine |
| 09/11/2013 | CN103291345A Device and method for adaptively adjusting mine ventilation |
| 09/11/2013 | CN103291344A Cross-district double-U-shaped ventilating system for high-gas working face and application method for cross-district double-U-shaped ventilating system |
| 09/10/2013 | CA2487523C Mine ventilation panel system |
| 09/08/2013 | CA2770876A1 Welded double fabric tube |
| 09/04/2013 | CN203175596U Air door locking device |
| 09/04/2013 | CN203175595U Switching fan stack |
| 09/04/2013 | CN203175594U High-efficiency mine ventilation and shaft waste gas cleaning system |
| 09/04/2013 | CN203175593U Low-concentration short-distance airtight air exhausting device |
| 09/04/2013 | CN203175592U Air drafting device in tunnel construction |
| 09/04/2013 | CN103277134A One ventilation and three prevention equipment comprehensively preventing driving face accidents |
| 09/04/2013 | CN103277133A One ventilation and three prevention equipment comprehensively preventing stoping face accidents |
| 09/04/2013 | CN103277132A One ventilation and three prevention equipment comprehensively preventing stoping face accidents |
| 09/04/2013 | CN103277128A Urban rail traffic engineering wartime protection ventilation conversion system |
| 08/29/2013 | WO2013123586A1 Method of extracting energy from a cavity created by mining operations |
| 08/28/2013 | CN203161277U Air door electric locking device |
| 08/28/2013 | CN203161276U Interval type cable tunnel ventilation cooling device |
| 08/28/2013 | CN203161275U Ventilation system used for cable working well and provided with horizontal fan |
| 08/28/2013 | CN203161274U Ventilation control system of electric power tunnel |
| 08/28/2013 | CN203161273U Ventilation system of cable working well |
| 08/28/2013 | CN203161272U High-position similar-E-shaped ventilation system for coal face |
| 08/28/2013 | CN103266916A Special water spray fire resisting shutter device for tunnel |
| 08/28/2013 | CN103266907A Tunnel construction ventilation system for local gas outburst |
| 08/28/2013 | CN103266906A Roadway wind resistance parameter self-adjusting verification method for mine ventilation system statuses |
| 08/21/2013 | CN203146030U Gas monitoring system based on CAN bus |
| 08/21/2013 | CN203145988U Air duct air capacity control device |
| 08/21/2013 | CN203145987U Protective device of roadway air duct |
| 08/21/2013 | CN203145986U Compressed air diverting wall-attached air ventilator capable of adjusting air volume |
| 08/21/2013 | CN203145985U Underground multilevel station partial concentrated ventilation structure |
| 08/21/2013 | CN203145984U Double fan air duct automatic switching device |
| 08/21/2013 | CN103256066A Anti-cracking air-return vertical shaft |
| 08/21/2013 | CN103256065A Automatic air duct switcher of local fan |
| 08/21/2013 | CN103256059A Natural lighting and ventilation integrated device for tunnel and manufacturing method thereof |
| 08/21/2013 | CN102518461B Coal mine low-post secondary heat energy resource comprehension utilization system |
| 08/14/2013 | CN203130138U Vertical shaft explosion door capable of rising through repeated buffering |
| 08/14/2013 | CN203130137U Ventilating system and ventilating device of long-distance blind roadway |
| 08/14/2013 | CN203130136U Fire smoke control device for single-exit tunnel under construction |
| 08/14/2013 | CN203130135U Vertical shaft explosion door grid section type temporary replacement device |
| 08/14/2013 | CN103244169A Water spray fire-proof rolling shutter device fire extinguishing system special for tunnels |
| 08/14/2013 | CN103244168A Air door interlock limiting device |
| 08/14/2013 | CN103244167A Manhole forced ventilation construction method and manhole forced ventilation curtain |
| 08/14/2013 | CN103244166A Solar thermal flow tunnel ventilation system |
| 08/14/2013 | CN103244165A Collision-type respiratory zone air supply system |
| 08/14/2013 | CN103243996A Auxiliary door opening device, air door and ventilation system |
| 08/07/2013 | CN203114322U Intelligent power-free tunnel ventilation device |
| 08/07/2013 | CN203108362U Pollution gas purifier device for mines |
| 08/07/2013 | CN103233764A Anti-cracking air return vertical shaft fan drift |
| 08/07/2013 | CN103233763A System and method for monitoring harmful gas in underground engineering construction period |
| 07/31/2013 | CN203097925U Split type air door frame used for coal mine laneway |
| 07/31/2013 | CN203097924U Local ventilating and air distributing device for mine |
| 07/31/2013 | CN203097923U Air exhaust hole of tunnel ventilation model |
| 07/31/2013 | CN203097922U Multiple-working face ventilation structure for long and large tunnel |
| 07/31/2013 | CN203097921U System integrating function of heat dissipation of shielded-gate-type subway station tunnels with function of smoke exhaust of platform public area |
| 07/24/2013 | CN203081480U Novel air regulation window |
| 07/24/2013 | CN203081479U Detection device of match of gas content and ventilation wind speeds |
| 07/24/2013 | CN203081478U Underground refrigerating and ventilating unit |
| 07/24/2013 | CN203081076U Air door shuttling device |
| 07/24/2013 | CN103216267A Audible and visual alarming device of chained air door under mine shaft |
| 07/24/2013 | CN103216254A Air door opening and closing device |
| 07/24/2013 | CN103216253A Ventilating system for managing overrunning of corner gas on recovery working face |
| 07/24/2013 | CN102108868B Balanced excavation method for room and pillar mining method |
| 07/17/2013 | CN203067009U Mining electro hydraulic shutter type air window |
| 07/17/2013 | CN203067008U Railway tunnel fire prevention ventilation system |
| 07/17/2013 | CN203066985U Tunnel interchange and ventilation running water type Nanguo pear nature fresh-keeping storehouse |
| 07/17/2013 | CN103206239A Equipment for comprehensively preventing one-ventilation three-prevention accidents on driving face |
| 07/17/2013 | CN103206236A Air door locking device |