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 17 - Methods or devices for use in mines or tunnels, not covered elsewhere
Patents for E21F 17 - Methods or devices for use in mines or tunnels, not covered elsewhere (4,758)
06/1989
06/28/1989CN2040145U Waterproof gate
06/28/1989CN2040143U Driving equipment of a mine protection door
06/27/1989US4842444 Method for displacing oxygen from a mine
06/15/1989DE3741315A1 Rock anchor
06/07/1989CN2038953U Miniature gas number indicating alarm
06/01/1989DE3837822A1 Transportable section warning apparatus
05/1989
05/24/1989EP0316828A1 Portable tunnel warning instrument
04/1989
04/26/1989EP0224548B1 Mining machine control system
04/20/1989DE3733300A1 Combined display, control and monitoring unit for underground
04/11/1989US4820081 Head seal for a mine stopping
04/04/1989US4819273 Mining machine control system
04/04/1989US4818144 Flood isolation dam
03/1989
03/08/1989CN2033859U Electric bell generator used in coal mine
02/1989
02/21/1989USRE32871 Mine stopping
02/02/1989DE3724702A1 Clamping bracket on mine-support channel sections
01/1989
01/04/1989CN2030258U Comprehensive electric-control apparatus used for coal mine driving face
12/1988
12/13/1988CA1246698A1 Trackless, center-pivot-steered underground vehicle driven by an electric motor
12/13/1988CA1246348A1 Jack for installing a mine stopping
11/1988
11/17/1988DE3720635A1 Support section segment, in particular of a channel section
11/15/1988US4784522 Method and apparatus for effecting high pressure isolation of liquids
11/03/1988DE3712961A1 Device for dismantling or assembling telescopic power pistons
10/1988
10/27/1988DE3713008A1 Dismantling aid
10/13/1988DE3711119A1 Device for suspending belt structures
09/1988
09/28/1988CN87212284U Mine sound-light signal dotter
09/14/1988EP0281737A1 Device for placing loads in cavities
09/14/1988CN87209673U Portable methane testing alarm
09/06/1988US4768741 Pipe hangers
08/1988
08/10/1988CN87207876U Gas alarm device
08/04/1988DE3703243C1 Battery for underground electrical power supply
07/1988
07/05/1988CA1238792A1 Process for dumping of particulate solid or pumpable solid and liquid waste materials in underground salt enclosed cavities, in particular salt caverns
06/1988
06/28/1988CA1238493A1 Double-wall underground container for storing liquids and leak detecting means therefor
06/01/1988DE3707314C1 Apparatus for the disposal of sludge from pits, particularly from locomotive maintenance sumps in underground workings
05/1988
05/24/1988USRE32675 Mine stopping and method of and jack for installing same
05/18/1988CN87214547U Miner's lamp-shaped methanophone
03/1988
03/30/1988CN86106319A Remote sensing and monitoring system for bazards of collapsc and leakage
03/15/1988US4730800 Universal tailpipe holding bracket
03/03/1988DE3629785A1 Method and arrangement for the back relief of the underground roadway support for attaching hook-head girder claws to embedded support sections
03/01/1988CA1233533A1 Cable handling system
02/1988
02/25/1988DE3634831C1 Suspension device for a channel-shaped roadway support arch
02/23/1988CA1233038A1 Process and device sealing barrier constructions in subterranean galleries, especially in salt mines
02/11/1988DE3625625A1 Clevis or connector in the form of a shackle
02/02/1988US4722574 Personnel detection and protection systems for use in underground mines
12/1987
12/17/1987DE3619527A1 Storage space for diesel fuels
12/15/1987US4712945 System for sealing barrier constructions in subterranean galleries
12/05/1987CN86207645U Smell-sensitive gas alarm
11/1987
11/24/1987CA1229675A1 Device for determining the position of the cutting head of a drift advancing machine or of a winning machine
11/19/1987EP0245620A2 Procedure and apparatus for establishing an emergency contact in underground mines
11/11/1987CN86201635U Special alarm for railway and mines
11/04/1987CN87203142U Detachable connecting device
10/1987
10/13/1987US4700023 Trackless, center articulation underground vehicle driven by an electric motor
10/06/1987US4697921 Device for detecting a relative change in distance between two measuring points, and its use
10/06/1987US4697770 Sway brace for piping
10/03/1987CN86203247U Safety monitoring apparatus for mine hoist system
09/1987
09/22/1987US4695035 Jack for installing a mine stopping
09/08/1987US4692061 Process for dumping of particulate solid waste materials in underground salt enclosed cavitives
08/1987
08/26/1987CN86208795U Hydraulic type installing device for pipe slot anchor bar
08/18/1987US4686849 Method for determining mine roof competency
07/1987
07/22/1987EP0132260B1 Device for determining a modification of the relative distance between two measurement points and utilization thereof
06/1987
06/10/1987EP0224548A1 Mining machine control system.
06/02/1987US4669919 Process for consolidation and sealing coal and/or rock, soil and brick formations in mining, tunnelling and construction
05/1987
05/26/1987US4667782 Cable handling system
05/14/1987DE3540006A1 Shaft guide device
04/1987
04/07/1987US4655916 Mining-type slurries
03/1987
03/10/1987US4649288 Pre-start warning system and machine incorporating such system
03/10/1987US4648659 Method and hydraulic system for controlling supply of fluid to combine for extracting minerals
02/1987
02/25/1987EP0211061A1 Device for controlling in situ movement processes in solid media
02/12/1987DE3631424A1 Method of disposing of harmful substances with simultaneous energy generation
01/1987
01/07/1987CN85103990A Calibration and measurement signal transmitter used in underground pit
01/02/1987DE3522163A1 Holding device for the cutter cable of a winning machine in underground mining
12/1986
12/24/1986CN85201222U Protecting for loop cover of methane-sensing-alarming device
12/18/1986WO1986007409A1 Mining machine control system
12/02/1986US4625631 Method and apparatus for extending ventilation ductwork
11/1986
11/18/1986US4623198 Method for reducing compressed air losses when driving underground cavities supported by compressed air
11/12/1986CA1213870A Cable winding system for electrically powered mine vehicles
11/05/1986CN86201732U Colliery acoustooptic trembler bell with explosion-proof function
10/1986
10/15/1986CN86100737A Trackless, center-pivot-steered underground vehicle driven by an electric motor
09/1986
09/23/1986CA1211804A1 Trolley bridge
09/03/1986CN85109316A Mini precursor for bleeding drop-down accidents
08/1986
08/14/1986WO1986004672A1 Method and device for controlling in situ movement processes in solid media
08/06/1986EP0189955A2 Trackless articulated mine vehicle with an electric motor drive
07/1986
07/09/1986CN85107454A Overspeed signal generating device for bogie
06/1986
06/04/1986EP0132269B1 A method of excavating underground caverns in rock
06/04/1986CN85201300U Gas alarm mine lamp
05/1986
05/06/1986US4586530 Arrangement for supplying of consumers with pressure fluids
04/1986
04/22/1986US4583700 Cable winding system for electrically powered mine vehicles
04/08/1986US4581712 Roof pressure monitoring system
03/1986
03/26/1986EP0174964A1 Stoppings
03/19/1986CN85204675U Pocket gas detector for mining
02/1986
02/25/1986US4572707 Method in the excavation of underground caverns in rock
02/05/1986EP0170123A2 Process and device for sealing dams in under-ground galleries, especially in salt mines
01/1986
01/14/1986US4564241 Power supply arrangement for pulled mining machines
01/08/1986EP0167003A1 Process for the consolidation and sealing of coal and/or mountain, soil or brick formations in mining, tunnel driving and the construction industry
01/07/1986CA1198902A1 Mine stopping and method of and jack for installing same
12/1985
12/17/1985CA1198101A1 Rock-bolt hanger
11/1985
11/26/1985US4555142 Supply of liquid media for a hydraulic-mechanically operating mine working machine with sword
10/1985
10/16/1985EP0158438A1 Cable handling system
10/15/1985CA1195189A1 Method of coating geological formations as well as air and fire barriers
10/10/1985WO1985004444A1 Stoppings
08/1985
08/15/1985WO1985003546A1 Self contained towable power supply for mining machines
06/1985
06/18/1985US4523406 Door frame and door assembly for a mine stopping
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