Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21F - Safety devices, transport, filling-up, rescue, ventilation, or drainage in or of mines or tunnels › E21F 5 - Means or methods for preventing, binding, depositing or removing dust; Preventing explosions or fires
Patents for E21F 5 - Means or methods for preventing, binding, depositing or removing dust; Preventing explosions or fires (2,735)
07/1990
07/19/1990DE3941631A1 Plastics water trough for fighting gas explosions in tunnels - is stabilised by ribs and will not deform under very hot conditions
07/18/1990EP0377952A2 Improved apparatus for cleaning air in coal mines
07/12/1990CA2003072A1 Improved apparatus for cleaning air in coal mines
06/1990
06/13/1990DE3900973C1 Filter unit with progressively responding warning and extinguishing device
05/1990
05/23/1990DE3908656C1 Extinguishing-agent container for a release barrier in underground mining
03/1990
03/20/1990US4909845 Mixture of sodium silicate, perlite and mineral acid
03/20/1990CA1266949A1 Treatment of hazardous material with vapor suppressing, persistent, water-containing, polymeric air foam
02/1990
02/01/1990DE3834101C1 Method of warning the personnel with regard to clear recognition of explosions in underground mining, and device for carrying out the method
12/1989
12/28/1989DE3820673A1 Process for erecting explosion barriers in underground mining operations
11/1989
11/23/1989DE3815905A1 Wall bracket for water-tank explosion barriers in underground operation
10/1989
10/25/1989CN2046545U Dust falling apparatus by means of wind and water
10/10/1989US4872598 Dusting apparatus
09/1989
09/26/1989US4869737 Apparatus for cleaning air in coal mines
09/21/1989DE3808350A1 Behaelter zur bekaempfung von kohlenstaub- und/oder schlagwetterexplosionen in untertagebetrieben Behaelter to combat pulverized coal and / or firedamp explosions in underground operated
09/19/1989US4867613 Dirt tracks, mining residues, ores and other particulate surfaces stabilized by aqueous solution of addition polymer; dust suppressors
09/06/1989CN2044006U Controller of atomizing dedusting apparatus at transfer point of mine conveyer
08/1989
08/31/1989DE3805221A1 Dust-discharge apparatus for underground mining behind high-performance fabric filters
08/30/1989EP0330509A1 Barrier systems for mines
08/23/1989CN2043275U Explosion-isolating type infrared ray autocontrol device
08/10/1989DE3802992A1 Spray valve device for dust suppression in underground spaces, in particular in underground operations with hydraulic support units
08/03/1989DE3802656A1 Valve for an air conduit simultaneously used with a water conduit
07/1989
07/12/1989CN2040891U Variable speed gear for mine scraper conveyer
04/1989
04/27/1989DE3734723A1 Switching device actuable as a function of rotational speed
03/1989
03/22/1989CN1031852A Preparation of coal dust inhibitor used in blasting operation
03/15/1989CN2034198U Dust sampling device for mining
02/1989
02/21/1989US4805702 Methods and apparatus for rock dusting mine tunnels
02/15/1989CN2032654U Energy storage type explosion-proof spraying barrier device for gallery
02/01/1989CN2031838U Explosion-proof and explosion-isolating blaster
02/01/1989CN1030811A Purifying machine for tunnel environment
01/1989
01/04/1989CN2030258U Comprehensive electric-control apparatus used for coal mine driving face
01/03/1989US4795590 Treatment of hazardous material with vapor suppressing, persistent, water-containing, polymeric air foam
12/1988
12/28/1988EP0296278A1 Dust filter for mines
09/1988
09/28/1988CN88100315A Wet type dust remover with fibre-gates
08/1988
08/25/1988DE3704516A1 Mining and tunnelling filter for separating off nitrous gases
08/10/1988CN87205481U Pressure-comparing explosion-proof bag
06/1988
06/30/1988DE3643862A1 Mining safety filter
06/01/1988DE3639915A1 Device for providing water barriers for underground explosions
05/1988
05/18/1988EP0267792A2 Treatment of inorganic particles with polymer
04/1988
04/28/1988DE3635508A1 Movable, asymmetric water-tank explosion barrier
03/1988
03/30/1988CN87209859U Air purifier for mine
02/1988
02/17/1988CN87201449U Dry-type sprayer for tunnel spraying
01/1988
01/28/1988DE3623802A1 Collapsible water-tank barrier
01/13/1988CN87201846U Anti-explosion and air-cushiontype conveyer
01/06/1988CN87202143U Airtight hole sealing machine
12/1987
12/05/1987CN86210650U Pressurized explosion-proof lifter
12/05/1987CN86205194U Electric dust remover using rotating wet air flow
12/03/1987DE3618176A1 Mobile water tank explosion barrier
12/01/1987CA1229853A1 Process for spraying the bits and/or facing with pressurized liquid as well as apparatus for performing this process
11/1987
11/19/1987EP0245778A1 Double tangential nozzle
10/1987
10/15/1987DE3612054A1 Mine safety filter
10/14/1987CN87204978U Water jet stream dedusting ventilator
10/03/1987CN86206361U Multifunctional explosion igniter
10/01/1987DE3638327C1 Device for sucking out and separating dust or the like from fluids
06/1987
06/16/1987US4673131 Mine dusting machine
05/1987
05/27/1987CN86202792U Gas concentration mornitor with single chip microprocesser
05/20/1987EP0222153A1 Device for the dust-free extraction of dust particles
04/1987
04/16/1987DE3536675A1 Wetting pipe for dust suppression in pneumatic conveying lines
02/1987
02/26/1987DE3530361A1 Spray valve
12/1986
12/30/1986EP0206548A2 Treatment of hazardous material with vapor suppressing, persistent, water-containing, polymeric air foam
11/1986
11/19/1986CN86201734U Transparent explosion-proof lampshade for underground workings of coal mine
11/05/1986CN86201732U Colliery acoustooptic trembler bell with explosion-proof function
10/1986
10/15/1986EP0197714A2 Method for the control of dust
10/08/1986CN85204544U Automatic water-spray control device for mine exploration-proof
06/1986
06/10/1986US4594268 Method for the control of dust using methacrylate containing emulsions and compositions
04/1986
04/29/1986US4585275 Process for spraying the bits and/or the facing with pressurized liquid as well as apparatus for performing this process
02/1986
02/18/1986CA1200823A1 Cutting head for drift advancing machines
02/04/1986US4568127 Cutting head for drift advancing machines
12/1985
12/31/1985US4561905 Method for suppressing coal dust
11/1985
11/12/1985US4552487 Mine roof support unit having dust suppression means
10/1985
10/22/1985CA1195460A1 Blower and dust collecting machine
09/1985
09/24/1985US4543111 Dust separator
07/1985
07/24/1985EP0149506A2 Apparatus and method for distributing powdered material
04/1985
04/16/1985US4510883 Apparatus for distributing powdered material
02/1985
02/05/1985US4497641 Apparatus and method for dust control by condensation enlargement
12/1984
12/11/1984US4487615 Method of reducing mine dust
11/1984
11/20/1984US4483238 Dust control in longwall mining
11/13/1984CA1177990A1 Capsules containing self-setting compositions and the compositions
10/1984
10/17/1984EP0122252A2 Method of sprinkling bits and/or working-faces by means of a pressurized fluid, and device for carrying out the method
04/1984
04/04/1984EP0105047A1 Cutting drum for tunneling machines
02/1984
02/21/1984CA1162475A1 Apparatus for removing dust particles from an air stream
11/1983
11/29/1983US4417992 Dust control
10/1983
10/18/1983CA1155388A1 Dust control unit
07/1983
07/26/1983US4394975 Rock dust blower
05/1983
05/18/1983EP0079261A1 Method of protecting personnel working in a dusty atmosphere
05/18/1983EP0079260A1 Device for extracting dust
04/1983
04/19/1983US4380459 In foam
04/19/1983US4380353 Dust control system and method of operation
04/14/1983WO1983001274A1 Protection device against explosions in underground works
03/1983
03/29/1983CA1143649A1 Dust control system
02/1983
02/01/1983US4371477 Dust wetter
12/1982
12/07/1982US4362540 Apparatus for removing dust particles from an air stream
09/1982
09/07/1982US4348057 Blower and dust collecting machine and method of operation
02/1982
02/24/1982EP0046455A1 Apparatus for mixing water and air, in particular for dedusting equipment in mines
02/17/1982EP0046037A2 Capsules containing self-setting compositions and the compositions
02/10/1982EP0045736A1 Apparatus for separating dust particles from an air current
12/1981
12/08/1981US4304739 For contacting air with a cleaning liquid
11/1981
11/25/1981EP0014200B1 Air cleaners
11/17/1981US4300631 Flexible continuous grout filled packer for use with a water infusion system
08/1981
08/18/1981US4284144 Passive explosion barrier for mines
05/1981
05/12/1981US4266829 Combined rotating bed scrubber and water eliminator
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