Patents
Patents for E21F 17 - Methods or devices for use in mines or tunnels, not covered elsewhere (4,758)
05/1985
05/14/1985US4516879 Foam slabs in mine tunnel stoppings
05/07/1985US4514905 Convergence extensometer for measuring mine roof subsidence
04/1985
04/09/1985US4510180 Spraying an aqueous rubber dispersion and dry hydraulic binder
03/1985
03/19/1985US4505322 Method of storing heat and heat store for carrying out the method
01/1985
01/30/1985EP0132269A1 A method of excavating underground caverns in rock.
01/30/1985EP0132260A1 Device for determining a modification of the relative distance between two measurement points and utilization thereof.
01/22/1985US4495496 Personnel monitoring and locating system
01/22/1985US4495495 Staff-location and signalling system for use in mines
01/16/1985EP0131312A2 High-water protection
12/1984
12/18/1984CA1179511A1 Constant-pressure air-storage cavern with hydraulic pressure compensation for air-storage gas turbine power stations
12/11/1984US4487387 Composite pipe hanger ring nut
11/1984
11/27/1984US4484837 Mine stopping lap-over panel clamp
11/20/1984US4483642 Mine stopping and method of and jack for installing same
11/20/1984US4483567 Apparatus for positioning supply connections into association with a mining extractor
10/1984
10/30/1984US4479857 Method and apparatus for radon control
10/23/1984US4479037 Trolley bridge
10/23/1984US4478535 Mine stopping with man door and door frame assembly
10/02/1984US4474506 Method for constructing in rock storage locations for liquid products, for example oil products
09/1984
09/11/1984CA1174247A1 Mining equipment
09/04/1984US4468970 Compression measuring device
08/1984
08/22/1984EP0116161A1 Fastening device
07/1984
07/24/1984US4461440 Pipe hanger for composite pipe hanger nut
07/19/1984WO1984002771A1 Device for determining a modification of the relative distance between two measurement points and utilization thereof
07/19/1984WO1984002741A1 A method in the excavation of underground caverns in rock
07/19/1984WO1984002739A1 Method for the control of feeding fluid medium to cutter-loader for freeing essential mineral and hydraulic system therefor
07/10/1984US4458950 Energy supply unit for winning machines pulled by a traction mechanism for mining operations
06/1984
06/19/1984US4454721 Constant-pressure air-storage cavern with hydralic pressure compensation for air-storage gas turbine power stations
06/19/1984CA1169441A1 Energy supply equipment for extraction machines in mine workings
05/1984
05/16/1984EP0108174A1 Alarms
04/1984
04/18/1984EP0105867A2 Apparatus for defining the position of the cutting head of a boring or mining machine
01/1984
01/24/1984US4427170 Cable holder having relatively rotatable parts
01/17/1984US4426642 Mine alert device
11/1983
11/29/1983US4417829 Safety device for underground storage of liquefied gas
11/15/1983US4415204 Emergency system for mines
10/1983
10/05/1983EP0090792A2 Driving box for a mining machine
08/1983
08/31/1983EP0087125A2 Method of proofing geological seams, as well as weather and fire dams
08/09/1983US4397224 Sheet metal attachment system and method for installation of mine brattices
07/1983
07/26/1983US4395163 Mining appliance
04/1983
04/12/1983CA1144379A1 Safety device for underground storage of liquefied gas
04/06/1983EP0075973A1 Storage cavern for air under constant pressure with a hydraulic pressure compensation for a gas turbine power plant
03/1983
03/29/1983CA1143620A1 Method of storing heat and heat store for carrying out the method
02/1983
02/17/1983WO1983000526A1 A method for constructing in rock storage locations for liquid products, for example oil products
02/15/1983US4373294 Door for a mine stopping having knife-edge hinges
01/1983
01/11/1983US4367985 Method of sealing salina excavations
01/11/1983US4367984 Stabilization of particulate material
12/1982
12/08/1982EP0066418A2 Sound operated start circuit
08/1982
08/31/1982US4346600 Stress sensor particularly suitable for elastic, plastic and visco-elastic materials
07/1982
07/20/1982US4340254 Method of mining heavy coal seams in two or more benches
05/1982
05/25/1982CA1124360A1 Induction coil extensometer
04/1982
04/27/1982US4326820 Final depository for radioactive wastes
04/20/1982US4325659 Mineral mining installation
04/06/1982US4323280 Remote controlled high wall coal mining system
03/1982
03/16/1982US4319772 Hydraulic coupling device
03/09/1982US4318533 Apparatus for maintaining tension on a tension cable
03/09/1982US4318518 Insulated hanger strap
02/1982
02/23/1982US4316814 Seal for a storage bore hole accommodating radioactive waste and method of applying the seal
02/16/1982US4315657 Gas seal for an in situ oil shale retort and method of forming thermal barrier
02/16/1982CA1118458A1 Method of relieving earth pressure in a working area
02/16/1982CA1118217A1 Storage arrangement for radioactive waste
02/16/1982CA1118216A1 Final depository for radioactive wastes
12/1981
12/29/1981US4307978 Method of relieving earth pressure in a working area
12/22/1981US4306696 Disconnectible suspension bow
12/15/1981US4305561 Clamp
12/15/1981US4305557 Pipe hanger
11/1981
11/24/1981CA1112883A1 Lined cavity in the earth
11/17/1981US4300397 Device and method for determining material strength in situ
11/10/1981US4299185 Device for warning of impending roof-fall in underground excavations
09/1981
09/08/1981US4288789 Alarm system with verbal message
09/01/1981US4286523 System for supporting overhead trolley rail
07/1981
07/08/1981EP0031327A1 Method of storing heat and heat store for carrying out the method
06/1981
06/30/1981CA1103944A1 Process for covering walls of a cavitated structure with a liquid impermeable liner
06/23/1981US4274765 Mining equipment
06/02/1981US4271407 Tunnel roof monitor employing an induction coil extensometer
06/02/1981US4270800 Pre-start warning device for a machine
05/1981
05/26/1981US4270072 Current supply circuit of cutting drum motors on a mining machine
05/05/1981US4265570 Mine roof control
04/1981
04/07/1981US4260191 Method and apparatus to control tension in a trailing cable and/or waterhose for a mining machine
03/1981
03/10/1981US4255070 Single-bolt roof suspension for overhead track
03/10/1981US4254930 Drain pipe hanger
02/1981
02/17/1981CA1095874A1 Turn guide apparatus
02/10/1981US4249833 Method of depressurizing a leached salt cavern
01/1981
01/27/1981US4247226 Hydraulic conduit systems for mine installations
01/27/1981US4247135 Hydraulic coupling device
01/20/1981US4245726 Supply systems for mobile appliances, particularly mining machines
01/13/1981CA1093321A2 Process for safe underground storage of cryogenic produces and corresponding storage installation
12/1980
12/16/1980US4239416 Lined cavity in the earth
11/1980
11/04/1980CA1089051A1 Mine roof movement monitor
09/1980
09/18/1980WO1980001948A1 Method of storing heat and heat store for carrying out the method
08/1980
08/19/1980US4217849 Mine roof warning indicator
08/06/1980EP0013854A1 Process and security device for the underground storage of a fluid under pressure
05/1980
05/20/1980US4203192 Method of anchoring a vibrating wire into a hollow gauge body
04/1980
04/22/1980US4198819 Power transmission
04/01/1980US4195512 Coal-shale interface detector
02/1980
02/06/1980EP0007554A1 Device for maintaining the tension in a tow cable
02/05/1980US4186553 Cable protection equipment
01/1980
01/29/1980US4185874 Longwall installation with carrier for water and electric supply and propulsion rock
12/1979
12/11/1979US4178345 Cuvette cartridge
11/1979
11/06/1979US4173140 Trigger device for explosion barrier
09/1979
09/25/1979CA1063084A1 Holder for suspending objects
09/18/1979CA1062478A1 Method of covering the bottom surface in a gas cavern
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