Patents
Patents for E21C 35 - Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups , or (6,127)
01/1981
01/27/1981US4247150 Bit arrangement for a cutting tool
01/27/1981US4247147 Retainer clip for cutter bits
01/20/1981US4245526 Mining machine haulage transmission
01/20/1981CA1093938A1 No translation available
01/13/1981US4244625 Apparatus for cutting hard earth formations
01/07/1981EP0020824A1 Push drill guidance system
12/1980
12/23/1980US4240669 Mining cutter bit holder and mounting assemblies
12/23/1980US4240667 Driving gear rack cleaner for a mining machine
12/23/1980US4240666 Device for mining of thick strata of useful minerals
12/16/1980US4239289 Maneuverable full face miner
12/02/1980US4236627 Cutting machine
11/1980
11/25/1980US4235475 Mineral mining equipment
11/18/1980US4234234 Driving device for a mining machine
11/18/1980US4234233 Chain driven cutting bucket for use in deep mining
11/18/1980US4234060 Brake equipment
10/1980
10/28/1980US4230370 Equipment for laying elongate material
10/21/1980CA1087878A1 Cemented carbide-steel composites for earthmoving and mining applications
10/14/1980US4228508 Automatic longwall mining system and method
10/07/1980US4226476 Continuous miner with improved roof-to-floor anchoring canopy units for advancing and turning machine and installing roof bolts
10/01/1980EP0016297A1 Device for controlling the position of a tunnel boring machine
09/1980
09/30/1980US4225188 Apparatus for removing and collecting moisture from a moisture-laden air flow
09/30/1980US4225186 Horizontal mining machine and method of slot mining
09/30/1980US4225144 Device for sealing the gap between component parts rotatable relative to each other
09/23/1980US4223950 Longwall cutting machines with drum moved by plural power means
09/16/1980US4222446 Cutter with cutter holder for disintegrating of material, particularly of rock
09/03/1980EP0014776A1 Rock cutter jib
08/1980
08/26/1980US4219239 Mining auger
08/20/1980EP0014695A1 Cutter head with water nozzles and process for operating this head
08/12/1980US4216999 Machine for mining tar sands having rearwardly directed exhaust related to conveyor trough
07/1980
07/15/1980US4212559 Means for connecting a male part with a female part
07/15/1980US4212497 Liquid discharge apparatus for a shearing-loader type mining machine
07/15/1980CA1081720A2 Wedge arrangement for removably affixing a work tool or work tool holder to a base member on mining machinery and the like
07/01/1980CA1080757A1 Automatic face transfer linear cutting rotary head continuous mining machine
06/1980
06/03/1980US4205882 Mineral mining conveyor with guide connecting feature
06/03/1980US4205881 Machine and method for mining hard material in-situ between adjacent auger holes
05/1980
05/13/1980US4202434 Stabilizer assembly for a mining machine conveyor
05/06/1980US4201421 Mining machine bit and mounting thereof
04/1980
04/30/1980EP0010536A1 Device for cooling the picks of cutter heads and the working face and for preventing the formation of dust
04/30/1980EP0010534A1 Device for cooling the picks of the cutting tools of a cutting machine and the excavation face and for preventing the formation of dust
04/29/1980US4200338 Mineral mining installation
04/29/1980US4200335 Gauging apparatus and method, particularly for controlling mining by a mining machine
04/29/1980US4200036 Ventilation system for automated mining machines
04/22/1980US4199107 Liquid spray jet assembly and a mineral mining machine cutting head incorporating such assembly
04/15/1980CA1075728A1 Push pull mining system
04/08/1980US4196935 Equipment for laying elongate material
04/08/1980US4196934 Shortwall mining machine
04/08/1980US4196798 Brake equipment for mining machines
04/01/1980US4195512 Coal-shale interface detector
03/1980
03/25/1980US4194791 Grooved earthworking bit and method of enhancing the life thereof
03/25/1980US4194790 Rock cutting tip inserts
03/25/1980CA1074345A1 Mineral cutting picks
03/25/1980CA1074344A1 Bit holder
03/18/1980US4193638 Multiple tip cutting bit for rotary drum-type cutter
03/11/1980US4192551 Remote control system for mining machines
03/11/1980US4192550 Reflected light determination of geological strata
02/1980
02/26/1980CA1072588A1 Rock milling cutters
02/26/1980CA1072352A1 Methods of and apparatus for applying roof mats to mine workings
02/19/1980US4189187 Mineral mining planer having pivoted floor cutter carrier
02/19/1980US4189183 Mining machine with cutter drums and sensing apparatus
02/12/1980US4188069 Mining machine having walk-on platform on cutter arm
02/05/1980US4186971 Device for cooling cutting teeth of cutter heads of cutting machines
02/05/1980US4186969 Apparatus for controlling the position of a mining machine
02/05/1980US4186553 Cable protection equipment
01/1980
01/29/1980US4185874 Longwall installation with carrier for water and electric supply and propulsion rock
01/01/1980US4181828 Safety cut-out devices
01/01/1980US4181360 Cutting force sensor
01/01/1980US4181115 Power control of a stone cutting machine having cutting chains
12/1979
12/25/1979US4180292 Rock milling cutter tongue and slot connected
12/25/1979US4180291 Mineral mining installation
11/1979
11/13/1979CA1066311A2 Mining apparatus and method
11/13/1979CA1066310A1 Method of extracting coal
10/1979
10/16/1979US4171147 Flywheel for a construction machine
10/09/1979US4170267 Tooth for rotary drilling tool for drilling foundations
10/02/1979CA1063626A1 Full face miner
09/1979
09/18/1979US4167998 Arrangement for tensioning a gateway conveyor in a sloping gateway
09/04/1979CA1061811A1 Method for cutting minerals and cutting machine
08/1979
08/07/1979US4163581 Retaining means for the connecting pin which joins a bit holder to a base member
07/1979
07/24/1979US4162103 Drive arrangements for mining machines
07/10/1979US4160566 Mining apparatus
07/03/1979US4159850 Mineral mining installation with face end winning
07/03/1979US4159746 Bit of circular cross-section
06/1979
06/26/1979US4159149 Coal mining auger
06/05/1979US4157204 Face ventilation system for coal mines
05/1979
05/22/1979US4155598 Longwall mining machine
05/22/1979US4155595 Mining method and apparatus
05/22/1979US4155594 Method of and apparatus for steering a mining machine
05/15/1979US4154483 Mineral cutting picks
05/15/1979US4154482 Mineral mining machines
05/15/1979US4154480 Mineral mining installation
05/01/1979US4151905 Operator carriage
04/1979
04/17/1979US4149753 Cutter bit assemblies
04/17/1979CA1052829A1 Cutting machine
04/10/1979CA1052453A1 Clip for printed circuit board edge connector
03/1979
03/13/1979US4143920 Mineral cutting pick insert shape
03/13/1979US4143918 Mining conveyor assemblies with control boxes on fence
03/13/1979US4143552 Coal seam sensor
03/06/1979US4142812 Scraper-chain conveyors
03/06/1979CA1050053A1 Dividing cutting machine
02/1979
02/06/1979USRE29900 Pick-type mining bit with support block having rotatable seat
01/1979
01/23/1979CA1046780A1 Method and apparatus for supporting the roof of an underground mine working
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