| Patents for E21F 5 - Means or methods for preventing, binding, depositing or removing dust; Preventing explosions or fires (2,735) |
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| 08/26/2009 | CN100532790C System for preventing coal and gas burst accident spreading |
| 08/19/2009 | CN201292859Y Mine ventilation air oxidation apparatus |
| 08/19/2009 | CN201292857Y Emergency wind inversing apparatus for coal mine aid |
| 08/19/2009 | CN201292850Y Linkage spraying device of loader |
| 08/19/2009 | CN101509393A Closed dust source apparatus between hydraulic support frames of coal mine |
| 08/05/2009 | EP2083613A2 Underground irrigation system |
| 08/05/2009 | CN201284659Y Novel tunnel foam hydrant case |
| 07/29/2009 | CN201280948Y Secondary negative-pressure dust removal machine |
| 07/29/2009 | CN201280947Y Geomantic omen spraying device |
| 07/29/2009 | CN201280946Y Mine cemented filling and dust removing apparatus |
| 07/22/2009 | CN201277056Y Pressure-storage type gas/dust explosion suppression apparatus |
| 07/22/2009 | CN101487399A Stopping agent for preventing coal self-ignition and its production and use method |
| 07/15/2009 | CN100513747C Mine dust collection method and its dedicated apparatus |
| 07/14/2009 | CA2406118C Hypoxic fire prevention and fire suppression systems and breathable fire extinguishing compositions for human occupied environments |
| 07/08/2009 | CN201269106Y Porthole dust catcher for down-hole hole drilling |
| 07/08/2009 | CN101476480A Carbon dioxide sprayer |
| 07/08/2009 | CN101476479A Foam type stopping agent for preventing mine coal spontaneous combustion and its use method |
| 07/08/2009 | CN101476478A Closed security exploitation method for mine |
| 07/08/2009 | CN101476477A Down-hole tunnel gas explosion blocking device |
| 07/08/2009 | CN101476476A Extinguishing method for chief wind road on fire |
| 07/08/2009 | CN101476475A Ventilation method for chief wind road on fire |
| 07/01/2009 | CN201265429Y Mining high-efficiency dust-extinguishing atomizer |
| 07/01/2009 | CN100507214C Chemical fire retartant for preventing controlling coil mineral well coal self-igniting |
| 06/24/2009 | CN201262096Y High-efficiency cooling device for working surface |
| 06/17/2009 | CN201258757Y Nonmotile low noise negative-pressure wet dust separater |
| 06/17/2009 | CN201258756Y Telescopic type hole packer for coal mine downhole |
| 06/17/2009 | CN201258755Y Ventilation wet type frequency conversion dedusting system for mining |
| 06/17/2009 | CN201258754Y Air curtain dust-separation device of coal cutter |
| 06/17/2009 | CN201258753Y Spiral air flow generator |
| 06/17/2009 | CN100501131C Coal-seam high-pressure pulsating water hammer water-infusion method and apparatus thereof |
| 06/17/2009 | CN100501130C Single-purpose water filling penetration stick and method for production |
| 06/10/2009 | CN201255003Y Mining fuel inert gas foam-making apparatus |
| 06/03/2009 | CN201250664Y Mining fuel oil inactive gas generating device |
| 06/03/2009 | CN100494634C Gas coal separation apparatus employed in projected coalbed burst-proof system for safe drilling |
| 05/27/2009 | CN201246180Y Automatic water injector of mine explosion isolated water channel |
| 05/27/2009 | CN201246178Y Mine deep well wind lack filtering device |
| 05/27/2009 | CN101440713A Technology for harnessing coal mine hydrogen sulfide by using high-voltage pulse liquid injection |
| 05/27/2009 | CN101440712A Mounting use method of downhole laneway coal dust gas explosion blocking machine |
| 05/22/2009 | WO2009063682A1 Method of purification-processing for air in tunnel |
| 05/20/2009 | CN201239676Y Automatic rotating spray container |
| 05/13/2009 | CN201236721Y Automatic water-distribution hole bottom dust removing apparatus |
| 05/13/2009 | CN101429872A Hydraulic support atomizing de-dusting apparatus |
| 05/13/2009 | CN100487222C Energy saving method for rock drilling and tunneling driven by potential energy of water from deep well mining |
| 05/06/2009 | CN201231187Y Foam spray head capable of dedusting below coal mine well |
| 05/06/2009 | CN101424192A Water tank for integral grid shape explosion suppression water container |
| 04/29/2009 | CN101418702A Coal mine ventilation air methane oxidation device, mash gas adding system and security protection mechanism |
| 04/29/2009 | CN101418700A Watering lorries |
| 04/22/2009 | CN201225164Y Mine downhole powder dust and mash gas purification apparatus |
| 04/22/2009 | CN101413399A Drill hole spray safety protection system |
| 04/22/2009 | CN101413398A Heating start-up system of mine ventilation air methane oxidized apparatus |
| 04/15/2009 | CN201221361Y Connecting downhole fully-mechanized mining and digging machine wind and water mixed spraying apparatus |
| 04/15/2009 | CN101408111A Mine cemented filling dust removing process and apparatus |
| 04/08/2009 | CN201218106Y Segmented water injection hole packer |
| 04/02/2009 | WO2009042762A1 Method of controlling mine fires with polymeric gel |
| 04/01/2009 | CN101397912A Mounting and use method of sink for integral mesh type flameproof water container |
| 03/25/2009 | CN201212401Y Sprinkler in main haulage roadway |
| 03/25/2009 | CN201212400Y Dust remover for mine |
| 03/25/2009 | CN101392657A Pulping system for preventing coal autoignition |
| 03/18/2009 | CN101387203A Rapid dust removal method and device in tunnel |
| 03/18/2009 | CN101385955A Foam dedusting agent for mine |
| 03/11/2009 | EP2032799A1 Method for coating a matrix with fire, water and frost-proof barrier layer as well as layer prepared by the method |
| 03/11/2009 | CN100467831C Liquid and device for harnessing coal-mine gas |
| 03/04/2009 | CN201202490Y Automatic spraying device of rake machine for rake installing machine |
| 03/04/2009 | CN201202489Y Coal mine downhole foam explosion-isolating water tank |
| 03/04/2009 | CN201202488Y Coal mine downhole plastic explosion-isolating water tank |
| 03/04/2009 | CN201202487Y Dust removing noise reducer of mining ventilation shaft air exit |
| 02/18/2009 | CN201196096Y Gypsum sealing bottler |
| 02/12/2009 | US20090042504 Tunnel cover for a tunnel for controlled ventilation of gas |
| 02/11/2009 | CN201193532Y Downhole auto sprinkling and dust removing apparatus |
| 02/04/2009 | CN201190577Y Pneumatic dust-removing apparatus for mine downhole patching machine |
| 01/22/2009 | DE19853190B4 Rotationswäscher mit schrägstehendem Demister Rotary scrubber with an oblique demister |
| 01/21/2009 | CN201184212Y Fuel inert gases generating apparatus for coal mine |
| 01/21/2009 | CN201184211Y Fully-mechanized mining working face dustproof spray water supply system |
| 01/21/2009 | CN201184210Y Coal bed working face shot firing chain spraying device |
| 01/21/2009 | CN201184204Y Integrative placing support with fire-proof holes |
| 01/14/2009 | CN201180561Y Double-control dustproof atomizer |
| 01/14/2009 | CN201180560Y Foam dust removing system used for coal mine |
| 01/14/2009 | CN201180559Y Foam generator for coal mine dedusting |
| 01/14/2009 | CN201180558Y Down-hole dedusting foam generator |
| 01/14/2009 | CN101344006A Tunnel fire-proof slab and preparation method thereof |
| 12/31/2008 | CN201173131Y Mine air-cleaning system |
| 12/31/2008 | CN201173130Y Linked sprayer for coal mine spraying concrete and blasting |
| 12/31/2008 | CN201173129Y Dust remover |
| 12/31/2008 | CN201173128Y Mining multifunctional grouting machine |
| 12/31/2008 | CN201173122Y Sprayed concrete pressurizer |
| 12/24/2008 | CN201170117Y Spin type spraying device |
| 12/24/2008 | CN201170116Y Wind and water linkage adjustment spraying device |
| 12/24/2008 | CN201170115Y Tunnel fire prevention felt |
| 12/24/2008 | CN100445481C Linear regulating water supply system with ground control and underground pressure measurement for coal mine |
| 12/17/2008 | CN201165876Y Movable pulping apparatus for mining |
| 12/10/2008 | CN101319614A Shallow hole medium pressure water injection method for stope working surface of coal mines |
| 12/10/2008 | CN101318163A Foam nozzle for dust removing down-hole of coal mine |
| 12/03/2008 | CN201159087Y Touch type real-time automatic atomizing and dust laying device |
| 11/19/2008 | CN201150901Y Conveyer belt automatic atomizer |
| 11/19/2008 | CN101307691A Wind water mixed atomizing method for down-hole coal cutter fully-mechanized coal winning machine |
| 11/12/2008 | CN201147732Y Combined nozzle |
| 11/06/2008 | WO2008024569A3 Personal or spot area environmental management systems and apparatuses |
| 10/29/2008 | CN201141311Y Down-hole electric sprinkling dustproof vehicle for coal mine |
| 10/29/2008 | CN201141310Y Water curtain type wind purifier |
| 10/29/2008 | CN201141309Y Inverted ventilation fire protection device for mine belt transportation lane |