Patents
Sitemap › E21 - Earth or rock drilling; Mining › E21C - Mining or quarrying › E21C 29 - Propulsion of machines for slitting or completely freeing the mineral from the seam
Patents for E21C 29 - Propulsion of machines for slitting or completely freeing the mineral from the seam (839)
04/1985
04/23/1985US4512706 Shear dolly for long wall mining
03/1985
03/20/1985EP0057711B1 Mineral winning machine and system
02/1985
02/26/1985US4501447 Haulage drive
02/06/1985EP0076799B1 Integrated cutter, breaker and haulage drive gearcase
11/1984
11/20/1984US4483568 Advancing apparatus for a multi-unit mining machine
11/20/1984US4483567 Apparatus for positioning supply connections into association with a mining extractor
09/1984
09/18/1984US4471998 Cutter drum assembly for longwall mining machines
08/1984
08/14/1984US4465319 Integrated cutter, breaker and haulage drive gearcase
07/1984
07/24/1984US4461512 Feed system of a mining combine
07/19/1984WO1984002739A1 Method for the control of feeding fluid medium to cutter-loader for freeing essential mineral and hydraulic system therefor
07/19/1984WO1984002738A1 Chainless propulsion system of cutter-loader for freeing mineral
07/03/1984USRE31622 Mining machine having rectangular thrust transmitting conveyor column
06/1984
06/19/1984CA1169441A1 Energy supply equipment for extraction machines in mine workings
06/12/1984US4453774 Driving arrangement for longwall mining machines
05/1984
05/29/1984US4451091 Track for a longwall mining machine
05/29/1984US4451090 Advancing apparatus for coal-mining machine in underground mine
04/1984
04/10/1984CA1165338A1 Mining machine
03/1984
03/06/1984US4435018 Mineral winning machine for "in web" mining system
01/1984
01/10/1984US4424722 Rack and pinion drive arrangement
12/1983
12/20/1983CA1159090A1 Continuous mining machine
12/20/1983CA1159089A1 Mining machine
11/1983
11/22/1983US4416643 Planar drive device
10/1983
10/04/1983US4407545 Mine system
09/1983
09/27/1983US4406354 Brake equipment for underground mining machines
09/27/1983CA1154467A1 Mine system
08/1983
08/09/1983US4397199 Gear rack for a mining machine
08/02/1983US4396229 Mining machine with externally mounted drive means
07/1983
07/12/1983CA1149977A1 Control method for winch of mining machinery
06/1983
06/14/1983CA1148179A1 Advanced mechanism, preferably for mining machines
05/1983
05/25/1983EP0079704A1 Pinless haulage drive chain and rack-form link for use seriatim in forming same
05/10/1983CA1146182A1 Hauling and cutting equipment
05/03/1983CA1145779A1 Excavating machine
04/1983
04/20/1983EP0076799A1 Integrated cutter, breaker and haulage drive gearcase.
02/1983
02/08/1983US4372619 Chain having longitudinal stiffness used with hauling and cutting equipment
02/01/1983US4370856 Control method for winch of mining machinery
01/1983
01/11/1983US4367900 Mineral mining installation with electronic control
01/04/1983US4366990 Mechanism for guiding a coal planer on the trough of a scraper chain conveyor
12/1982
12/14/1982US4363519 Continuous mining machine
12/07/1982US4362337 Tunneling system
12/07/1982CA1137123A1 Hauling and cutting plant
11/1982
11/23/1982US4360235 Cutting and chiseling assembly for mining machine and method performed thereby
11/02/1982US4357052 Device for directing the rack
10/1982
10/28/1982WO1982003654A1 Integrated cutter, breaker and haulage drive gearcase
09/1982
09/21/1982US4350393 Plough transmission
09/14/1982US4349229 Longwall mineral mining installation
09/01/1982EP0059051A1 Haulage drive chain for a mining machine
08/1982
08/31/1982US4346938 Hauling and cutting plant
08/19/1982WO1982002737A1 Feed system of cutter-loader
08/18/1982EP0057711A1 Mineral winning machine and system.
06/1982
06/01/1982US4332421 Coupling devices for connecting a mineral mining machine to a drive chain
04/1982
04/27/1982US4326753 Advance mechanism, preferably for mining machines
04/20/1982CA1122233A1 Traversable machines
03/1982
03/04/1982WO1982000680A1 Mineral winning machine and system
02/1982
02/16/1982US4315658 Mining equipment
12/1981
12/29/1981US4307915 Gear rack for longwall mining machine
11/1981
11/03/1981US4298232 Mining machine
11/03/1981US4298231 Apparatus for use in under-ground long wall mine workings
09/1981
09/22/1981US4290652 Machine for the cutting of rocks in underground works
09/01/1981US4286771 Haulage apparatus for mining machines
08/1981
08/18/1981CA1107225A1 Scraper chain conveyor assembly
08/04/1981US4281879 Stabilizing assembly for a mining machine
07/1981
07/21/1981US4279445 Longwall mining installation having stable-hole plough
06/1981
06/16/1981US4273385 Device for safety guiding of hauling chain especially at ranging drum shearer in coal mining
06/16/1981CA1103282A1 Device for safety guiding of hauling chain especially at ranging drum shearer in coal mining
06/10/1981EP0029902A1 Device for guiding the rack of a trunkless advancing mechanism
05/1981
05/26/1981US4269304 Scraper chain conveyor assembly
05/19/1981CA1101449A1 Continuous miner with improved roof-to-floor anchoring canopy units for advancing and turning machine and installing roof bolts
05/12/1981US4266484 Rack-rail assembly for a mining machine
04/1981
04/07/1981US4260195 Contour miner
04/07/1981US4260191 Method and apparatus to control tension in a trailing cable and/or waterhose for a mining machine
03/1981
03/24/1981US4257649 Coal combine
03/17/1981US4256345 Scraper chain conveyor with rack for the chainless feed of winning machines
03/17/1981US4256343 Mechanism for advancing continuous mining machine through mining cycle and tramming modes
03/10/1981US4254710 Link-loc chainless haulage system
02/1981
02/03/1981US4248482 Curved conveyor section guide assembly
01/1981
01/13/1981CA1093590A1 Coal combine
01/07/1981EP0021987A1 Machine for driving underground galleries
12/1980
12/23/1980US4240668 Driving device for mining machine
12/23/1980US4240667 Driving gear rack cleaner for a mining machine
12/16/1980CA1091459A1 Translation mechanism for track vehicle
12/02/1980US4236758 Rack drive for a drum cutter mining machine
11/1980
11/25/1980US4235475 Mineral mining equipment
11/18/1980US4234234 Driving device for a mining machine
11/18/1980US4234163 Engagement devices
10/1980
10/07/1980US4226476 Continuous miner with improved roof-to-floor anchoring canopy units for advancing and turning machine and installing roof bolts
07/1980
07/15/1980US4212362 Device for causing translation of a tracked machine
06/1980
06/03/1980US4205882 Mineral mining conveyor with guide connecting feature
06/03/1980CA1078882A1 Drag bit excavation
04/1980
04/08/1980US4196934 Shortwall mining machine
02/1980
02/19/1980US4189188 Drum cutter mining machine
02/05/1980US4186970 Sectional conveyor with sectional rack fixed on the conveyor at only a single location
01/1980
01/22/1980US4184715 Rack device for a drum cutter mining machine
01/15/1980US4183585 Longwall mining machine
11/1979
11/06/1979US4173280 Apparatus for driving a mining machine into a driveway extending from a mining roadway
07/1979
07/31/1979US4162810 Rack apparatus on a face conveyor for a mining machine
07/24/1979US4162103 Drive arrangements for mining machines
07/03/1979US4159851 Drive frame and assembly for mining apparatus
07/03/1979US4159849 Holding device for a chain
05/1979
05/22/1979US4155600 Support for movable segments in a rack for a drum cutter mining machine
05/22/1979US4155599 Drive gears for rack-driven mining machine
1 2 3 4 5 6 7 8 9