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