| Patents for E21F 1 - Ventilation of mines or tunnels; Distribution of ventilating currents (2,288) |
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| 11/02/2011 | CN102232140A Ventilation system for railway tunnels |
| 11/02/2011 | CN102230395A Multifunctional hole packer capable of plugging and injecting |
| 11/02/2011 | CN102230388A Underground air door interlocking device |
| 10/26/2011 | CN202017517U Dust collecting and removing device for mechanized heading face of mine |
| 10/26/2011 | CN202017511U Natural ventilation and smoke discharge system of urban rail transit interval tunnel |
| 10/26/2011 | CN202017510U Double-shaft movable pressure-free air door |
| 10/26/2011 | CN202017509U Air quantity monitoring and alarm ventilating tube for mine |
| 10/19/2011 | CN202012366U Simple ventilating unit |
| 10/19/2011 | CN101182781B Breathing place used for synthesis pipe canal |
| 10/13/2011 | WO2011100784A3 Underground mine ventilation system |
| 10/12/2011 | EP2373893A1 Improved tunnel ventilation device |
| 10/12/2011 | CN202007681U Mine ventilation system with electrostatic eliminating function |
| 10/12/2011 | CN202007680U Structure of tunnel ventilation booth |
| 10/12/2011 | CN202007672U Long-span hydropower station underground power house |
| 10/12/2011 | CN102213105A Mobile self-cleaning dry dust-collecting and ventilating equipment used in tunnel construction |
| 10/05/2011 | CN202001046U Air channel gate |
| 10/05/2011 | CN202001045U Interlock device for mine air door |
| 10/05/2011 | CN1877081B Ventilation device with entry driving unit and connection portion for driving headings |
| 09/28/2011 | CN201991695U Wind power generation device arranged on mine ventilation tube |
| 09/28/2011 | CN201991545U Air window precisely regulated by using air-compression power |
| 09/28/2011 | CN201991544U 可抗炮击的胶质风筒 Resistant shelling of glial hairdryer |
| 09/28/2011 | CN102200022A Tunnel ventilation system |
| 09/28/2011 | CN101285544B P-aramid air-duct and uses thereof, and uses of p-aramid in air-duct |
| 09/21/2011 | CN201982142U 煤矿主要通风机自适应控制系统 Mine Main Fan adaptive control system |
| 09/21/2011 | CN201982130U 地铁自动风口智能排烟系统 Metro intelligent automatic air exhaust system |
| 09/21/2011 | CN201982106U 具有软管保护装置的隧道施工台车 With a hose protector trolley tunnel construction |
| 09/21/2011 | CN102191946A Fan hanger |
| 09/21/2011 | CN102191935A Water vapor rotating jet dust settling device for comprehensive driving working face |
| 09/14/2011 | CN201972724U 矿用小型组合除尘器 Mine dust with a small portfolio |
| 09/14/2011 | CN201972722U 防动压式调节风窗安装框 Anti dynamic pressure regulator Windshield mounting frame |
| 09/14/2011 | CN102182489A Automated control throttle for belt roadway of mechanical mine |
| 09/14/2011 | CN102182488A Automatic sluice gate of mechanical mine |
| 09/14/2011 | CN102182460A High-gas multi-roadway no-coal-pillar mining method |
| 09/14/2011 | CN102182459A Method for recovering remaining triangle coal on two-winged stope by flexible shield support mining method |
| 09/07/2011 | CN201963334U 电缆隧道降温装置 Cable tunnel cooling device |
| 09/07/2011 | CN201963333U 射流风机摆式随动吊架 Jet Fan Tilting follower hanger |
| 09/07/2011 | CN201963332U 一种新型空气保温风筒 A new air duct insulation |
| 09/07/2011 | CN201963331U 自动切换分叉风筒 Automatic switching bifurcated duct |
| 09/07/2011 | CN201963330U Mechanical panel ventilation system |
| 09/07/2011 | CN201963329U 一种隧道两级倍增无叶片通风装置 A tunneling two multiplier bladeless ventilation |
| 09/07/2011 | CN201963328U 城市隧道通风系统 City Tunnel Ventilation System |
| 09/07/2011 | CN201963327U 一种矿井工作面布冷装置 Face cloth cold in mine equipment |
| 09/07/2011 | CN1869402B Ventilation device for laneway grubbing with roadheader |
| 09/07/2011 | CN102174895A Dust collection and removal device for mine machine excavation working surface |
| 09/07/2011 | CN101852163B Multifunctional hydraulic-power ventilation heat exchanger |
| 09/07/2011 | CN101446200B Advancing coal-mining method |
| 09/06/2011 | CA2612553C Tunnel barrier |
| 08/31/2011 | CN201953394U 城区电缆隧道通风风亭 City cable tunnel ventilation air pavilion |
| 08/25/2011 | WO2011100850A1 Method and apparatus for fire ventilation and fire containment |
| 08/25/2011 | WO2011100784A2 Underground mine ventilation system |
| 08/24/2011 | CN201943734U 一种智能局部通风系统 An intelligent local exhaust ventilation systems |
| 08/24/2011 | CN201943733U 排风消声通道 Exhaust muffler channel |
| 08/24/2011 | CN201943714U 一种矿山隔声间 An insulation between mine |
| 08/24/2011 | CN101105104B Method for setting built-in type rain-screening aeration jalousie |
| 08/17/2011 | CN201934119U Windproof device |
| 08/17/2011 | CN102155250A Self-reset explosion-proof door |
| 08/17/2011 | CN101634294B Seamless energy-saving switching system of main mine fan |
| 08/10/2011 | CN101358533B Multifunctional window for mine air door |
| 08/03/2011 | CN201916222U 用于矿山采掘工作面及支巷道的智能应急风机 Mining face and support for mine roadway Intelligent Emergency Fan |
| 08/03/2011 | CN201916002U 高速公路隧道联动控制装置 Highway tunnel linkage control device |
| 08/03/2011 | CN201915985U 矿用刮板运输机机道防逆风装置 Mine scraper conveyor machine means of defense against the wind |
| 08/03/2011 | CN201915984U 风流调控装置 Merry control devices |
| 07/27/2011 | CN201908673U Air purifying device of refuge chamber |
| 07/27/2011 | CN201908663U Template trolley with good ventilation performance |
| 07/27/2011 | CN102135007A Pneumatically-controlled locking device for mine air door |
| 07/27/2011 | CN101787715B Method used for testing stability of foundation of fan suspended in road tunnel and system therefor |
| 07/27/2011 | CN101246364B Double-local fan fault diagnosis and automatic switching closedown integrated device |
| 07/20/2011 | CN201902225U Protective device for air door of coal-mining roadway |
| 07/20/2011 | CN201902224U Ventilation device for electric tunnel |
| 07/20/2011 | CN102128034A Methane safe control method for tunneling methane stratum-containing tunnel shield |
| 07/13/2011 | CN201896629U Novel mine dust-removal unit |
| 07/13/2011 | CN201896627U Mining linkage device for air door balancing |
| 07/13/2011 | CN201896626U Protection device for vehicle through throttle of mine |
| 07/13/2011 | CN201896625U Energy conservation and safety control system of mining fan |
| 07/13/2011 | CN102121391A Construction method for ventilation in construction of small-radius spiral tunnel |
| 07/13/2011 | CN101394916B Denitrification apparatus and denirification equipment for tunnel |
| 07/06/2011 | CN201891437U Air door whistling and car stopping device for main haulage roadways of mines |
| 07/06/2011 | CN201891414U Supporting dust removing system device of heading machine |
| 06/29/2011 | CN201884047U Local ventilative cooling dust collection purifier |
| 06/29/2011 | CN201884045U Mine automatic switching air door |
| 06/29/2011 | CN201884044U Fully automatically locked sound-light alarm air-door device |
| 06/29/2011 | CN201884034U Trolley for concrete construction of partition wall in steep inclined shaft |
| 06/29/2011 | CN102108868A Balanced excavation method for room and pillar mining method |
| 06/29/2011 | CN101725367B Ventilation air inlet rectifier of mine ventilation gas processing device |
| 06/22/2011 | CN201874872U Air speed governing air supplier |
| 06/22/2011 | CN201874618U Automatic monitoring instrument for air quantity in mine |
| 06/22/2011 | CN201874602U Dry-type split explosion-proof cover |
| 06/22/2011 | CN201874601U Explosion-proof shaft cover for return-air vertical shafts |
| 06/22/2011 | CN201874600U Automatic switcher for coal mine safety ventilation |
| 06/22/2011 | CN201874599U Modularized assembly type double-fan installation frame |
| 06/22/2011 | CN102102535A Dual-power dual-fan integrated switch with preferred main power |
| 06/22/2011 | CN102102527A Single inclined shaft double positive hole jetting and ventilation technology |
| 06/15/2011 | CN201865684U Comprehensive control system for local ventilator used in mines |
| 06/15/2011 | CN201865683U Sheet-type fence cutting and diverting muffler |
| 06/08/2011 | CN201858198U Diffusion tower structure for mine ventilation |
| 06/08/2011 | CN201857989U Automatic sliding contact air door for mine |
| 06/08/2011 | CN201857988U Rotating structure of front door of mine ventilator controller |
| 06/08/2011 | CN201857987U Front door structure of mine ventilator controller |
| 06/08/2011 | CN201857986U Front door rotating shaft guide seat of controller of mine fan |
| 06/08/2011 | CN102086773A Purification and ventilation device of air in tunnel |