| Patents for E21F 5 - Means or methods for preventing, binding, depositing or removing dust; Preventing explosions or fires (2,735) |
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| 06/24/2004 | US20040119327 Rear mounted bit holder water spray |
| 06/17/2004 | WO2002033221A8 Explosion proof walls |
| 06/17/2004 | US20040116064 Rock dust spreading system |
| 06/09/2004 | EP1426512A1 Fire-proof panel with premounted underlying joint covering strip |
| 05/19/2004 | CN2616685Y Hydraulic automatic hole-sealing coal seam water injection device |
| 05/13/2004 | WO2004039911A1 A process to obtain an agent preventing damaging effects of dust and its application on surface and terrains |
| 04/27/2004 | US6726849 Foam; limestone, water and foaming agent mixture; generated in situ; suppression fires |
| 04/08/2004 | DE10325040B3 Downhole layer container for powder-form building material has fluidizing insert in form of woven wire |
| 04/01/2004 | DE20218373U1 Brandschutzplatte mit vormontiertem Hinterlegungsstreifen Fire protection panel with pre-assembled backing strip |
| 03/25/2004 | WO2004025081A1 Dust scrubber |
| 03/25/2004 | DE19608141B4 Explosionssperre mit Wassertaschen Explosion lock bags with water |
| 03/25/2004 | CA2494994A1 Dust scrubber |
| 03/24/2004 | EP1399645A1 Suction device comprising a fire protection system |
| 03/10/2004 | EP1395736A2 Suction device for a tunnel |
| 01/07/2004 | CN2597666Y Hand-held electric coal cutting machine |
| 12/17/2003 | CN2592874Y Air-water combined spraying and purifying apparatus for mine |
| 12/17/2003 | CN2592873Y Automatic spraying device of oscillating wave control for mine |
| 12/03/2003 | CN2589681Y Blast drilling tunnel sprayer unit |
| 11/27/2003 | WO2003097169A1 Bulkhead for sealing off a tunnel in the event of a fire |
| 11/12/2003 | CN1455075A High-pressure gas-flow jet spraying and dust-reducing apparatus |
| 10/15/2003 | CN2580116Y Rubber water injection hole sealing device |
| 10/15/2003 | CN2580115Y New wet strong magnetic fiber grid dust remover |
| 08/07/2003 | WO2003064817A1 Method of dusting coal mine surfaces |
| 08/07/2003 | US20030146410 Method of dusting coal mine surfaces |
| 08/07/2003 | CA2474787A1 Method of dusting coal mine surfaces |
| 06/25/2003 | CN1112504C 自动喷雾控制阀 Automatic spray control valve |
| 05/28/2003 | CN1109807C Barrier for preventing plastic bag bursting and mounting method thereof |
| 05/14/2003 | CN1417451A Triphase foam generator for preventing and treating spontaneous coal combustion |
| 05/01/2003 | WO2002101198A3 Suction device for a tunnel |
| 03/19/2003 | EP1292365A2 Pressure generation device, preferably for extinguishing systems |
| 02/26/2003 | CN2537817Y Coal cutter |
| 01/16/2003 | US20030009999 Dust collection system for a bolting machine |
| 12/19/2002 | WO2002101198A2 Suction device for a tunnel |
| 12/19/2002 | WO2002101197A1 Suction device comprising a fire protection system |
| 12/04/2002 | CN1095540C Infrared detecting method for concealed fire spot of self-ignition coal in coal tunnel |
| 11/28/2002 | DE10131852A1 Dry filter assembly has filters divided into triangular section, inserted/removed at clean air side, with drag chain conveyor and lock to extract separated dust and dirt |
| 11/20/2002 | CN1380485A Mine turbo-charged air-supplying and fire-fighting system |
| 09/25/2002 | CN2512911Y Rotary spray shield dust reducing device |
| 08/29/2002 | WO2002033221A3 Explosion proof walls |
| 07/11/2002 | WO2001053658A8 Method and devices for preventing rock bursts, especially for use in underground works |
| 04/25/2002 | WO2002033221A2 Explosion proof walls |
| 04/11/2002 | WO2001078841A3 Pressure generation device, preferably for extinguishing systems |
| 03/07/2002 | DE10062441C1 Preventative monitoring method, for underground coal mining plant, detects actual operating temperature for switching to partial loading or initiating safety cut-out |
| 02/07/2002 | US20020014542 Control device for a water spray |
| 01/23/2002 | CN1332021A Fire system for vehicular tunnel |
| 12/18/2001 | CA2026631C Method for sealing mine workings |
| 11/21/2001 | CN1074943C Dust diffusion-preventing spray precipitation method and its nozzle |
| 11/06/2001 | US6312504 For purifying dust-containing air, particularly in underground mining and tunnel construction. |
| 10/25/2001 | WO2001078841A2 Pressure generation device, preferably for extinguishing systems |
| 09/27/2001 | DE10014543A1 Pressure generator for fire extinguishing or sprinkler system, uses explosives to produce combustion gas to exert pressure on medium |
| 09/06/2001 | DE10010185A1 Fire resistant lining for protection of tunnels is resistant to high temperatures and is positioned spaced apart from inner surface of tunnel wall |
| 08/30/2001 | WO2001063095A1 Dust collection system for a bolting machine |
| 08/29/2001 | CN1310056A 自动喷雾控制阀 Automatic spray control valve |
| 08/01/2001 | CN2440943Y Mine explosionproof and fireproof atomizer |
| 07/26/2001 | WO2001053658A2 Method and devices for preventing rock bursts, especially for use in underground works |
| 07/04/2001 | CN1301956A Infrared detecting method for concealed fire spot of self-ignition coal in coal tunnel |
| 05/30/2001 | EP1103285A1 Method and apparatus for reducing the consequences of a fire in a tunnel |
| 05/16/2001 | CN2430543Y Automatic spray dust reducer for under well working area longitudenal putting rack for coal mine |
| 04/18/2001 | EP1092837A2 Fire protection device for tunnels |
| 03/22/2001 | DE10045119A1 Dust extraction system for tunnel boring has suction unit and high voltage generator which charges electrodes through which dust particles pass and are charged for collection at further electrodes |
| 03/20/2001 | US6202765 Device having a filter, a filter vibrating means and a scraper used for sucking off drillings |
| 03/14/2001 | CN2423404Y Cement paste stowing machine |
| 03/07/2001 | CN2422448Y Draw type disrotatory fan negative pressure cavity |
| 03/01/2001 | DE19938458A1 Sprinkler system for tunnels/mining galleries has a pipe to carry water/foam under pressure with swing jets each fitted with a thermal sensor to react rapidly to a fire outbreak and aim the jet at the seat of the fire automatically |
| 02/28/2001 | CN2421412Y Ventilator for smoke prevention and dust control |
| 01/17/2001 | CN1060841C Long tube type high pressure water fog dust cleaning method and device for roll coal cutter |
| 01/10/2001 | CN2414195Y Pump device for gel fire-fighting technology |
| 11/02/2000 | DE19945108A1 Barrier against underground gas and coal dust explosions comprises plastic bags which are suspended from beams, contain flame retarding/extinguishing substances,and are provided with a pattern of weakened zones |
| 10/25/2000 | CN2402404Y 多功能喷雾阀 Multifunction spray valve |
| 10/24/2000 | US6135368 Rock dusting apparatus |
| 10/12/2000 | WO2000060018A1 A method of suppressing dust in a mine using an alkyl polyglucoside composition |
| 10/11/2000 | CN1269457A Barrier for preventing plastic bag bursting and mounting method therof |
| 09/13/2000 | CN2396183Y Hydraulic chock high-pressure spray duster |
| 07/26/2000 | CN1261126A Efficient dusting system carried by coal-mining machine by means of high-voltage charging and mist spray |
| 06/07/2000 | CN2381553Y Explosionproof diesel tractive vehicle |
| 05/25/2000 | DE19853190A1 Rotationswäscher mit schrägstehendem Demister Rotary scrubber with an oblique demister |
| 03/15/2000 | CN2368979Y Dust collector |
| 01/26/2000 | CN2360607Y Coal discharge injection duster of hydraulic prop |
| 10/06/1999 | CN2342099Y Dial type gas recording plate for mine inpection |
| 09/29/1999 | CN2340899Y Automatically extinguisher for smoke and electric supply cut-off in mining well |
| 09/28/1999 | US5959264 Sound absorber |
| 09/10/1999 | CA2263251A1 Fire suppression system for an automated mining system |
| 07/21/1999 | CN2329766Y Wet duster for tunnel |
| 06/30/1999 | CN1043919C Purifying method for explosive smoke of well |
| 06/08/1999 | US5909777 Method and apparatus for stopping the spread of a fire in an underground mine |
| 03/10/1999 | EP0775354B1 Sound absorber |
| 01/07/1999 | DE19728120A1 Filter for use in tunnelling and mining |
| 11/04/1998 | CN2296401Y Negative pressure dust trapping device for coal discharge outlet of discharge top coal hydraulic support |
| 05/26/1998 | CA2146576C Process for inerting a coal mining site |
| 05/20/1998 | DE19680137C1 Method of suspending and erecting water tank acting as explosion barrier |
| 05/20/1998 | DE19647333A1 Explosion barrier with suspended water-trough fir underground mine |
| 05/20/1998 | CN2282071Y Dustfall nozzle for preventing dust from diffusion |
| 05/20/1998 | CN2282070Y Long tube type high pressure water spray dust remover for rotary drum coal mining machine |
| 04/08/1998 | CN2278082Y Automatic spraying dust removing device of single signal self-locking hydraulic support frame |
| 03/18/1998 | CN2276561Y Quick inflation sealing device for providing disaster relief |
| 01/21/1998 | CN1170809A Long tube type high pressure water fog dust cleaning method and device for roll coal-cutter |
| 09/10/1997 | CN1158756A Dust diffusion-preventing spray precipitation method and its nozzle |
| 08/28/1997 | DE19607306A1 Combined electrostatic and gas filtration system |
| 08/07/1997 | DE19631881C1 Method of fixing explosion barrier in underground mining and tunnelling operations |
| 07/24/1997 | DE19614735C1 Water trough for explosion carrier in underground mine |