E21D 7 - Shaft equipment, e.g. timbering within the shaft

Patents for E21D 7 - Shaft equipment, e.g. timbering within the shaft (218)
08/1987
08/11/1987	US4685830 Mineshaft closures
08/06/1987	DE3609150C1 Shaft line with stuffing box and additional weight
05/1987
05/14/1987	DE3540006A1 Shaft guide device
12/1986
12/24/1986	CN85204679U Protecting wall for vertical gallery
12/09/1986	US4627170 Shaft guide alignment measurement
09/1986
09/02/1986	CA1210579A1 Device for measuring guide alignment for mine shafts and the like
07/1986
07/22/1986	US4601607 Mine shaft guide system
06/1986
06/10/1986	CA1205644A1 Closing of mineshafts
06/10/1986	CA1205643A1 Mineshaft closures
04/1986
04/23/1986	EP0178939A2 Alignment-measuring device for conveyance guides
08/1985
08/20/1985	US4535541 Device for measuring guide alignment for mine shafts and the like
08/1983
08/30/1983	US4401206 Arrangement for continuously excavating ground and conveying excavated earth in the vertical direction
08/02/1983	US4396094 Retractable trolley escape capsule
04/1983
04/05/1983	CA1144190A1 Method for continuously excavating ground and conveying excavated earth in the vertical direction and an apparatus for carrying out said method
12/1981
12/22/1981	US4306364 Vertical excavating arrangement
09/1981
09/23/1981	EP0036079A1 Man-hole frame constructed of assembled members
09/1976
09/28/1976	US3982692 Clamping means for elevator guide rails and the like
04/1976
04/06/1976	US3948358 Elevator rail mounting bracket

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