| 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) |
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| 09/01/1998 | US5799741 Method of cutting and a cutting rotative bit |
| 09/01/1998 | CA2056804C Mineral mining equipment etc. |
| 08/26/1998 | EP0811112A4 Method of cutting and cutting rotative bit |
| 08/26/1998 | EP0695393A4 Extraction undercut for flanged bits |
| 08/13/1998 | WO1998035133A1 Mining ultra thin coal seams |
| 08/06/1998 | WO1998034011A1 Cutting toolholder retention system |
| 08/06/1998 | CA2277310A1 Cutting toolholder retention system |
| 07/14/1998 | US5779321 Swing tail assembly for miner |
| 07/09/1998 | DE19654626A1 Continuous highwall mining system for coal mine |
| 07/08/1998 | EP0851969A1 Device for reducing the danger of inflammability during the operation of a partial-cut tunnelling machine |
| 07/07/1998 | US5776593 Self-sharpening; mining, construction and agriculture uses |
| 06/25/1998 | WO1998027316A1 Cutting tool sleeve rotation limitation system |
| 06/23/1998 | US5769505 Cutting tool holder retention system |
| 06/23/1998 | US5769503 Method and apparatus for a rotating cutting drum or arm mounted with paired opposite circular polarity antennas and resonant microstrip patch transceiver for measuring coal, trona and potash layers forward, side and around a continuous mining machine |
| 06/17/1998 | CN1185192A Pick holder extraction method and device therefor |
| 06/11/1998 | WO1998025007A1 Device for damping vibrations in a part-face cutting machines |
| 06/11/1998 | WO1998025006A1 Device for damping vibrations in part-face cutting machines |
| 05/27/1998 | EP0843742A1 Hard composite and method of making the same |
| 05/22/1998 | WO1998021449A1 Swing tail assembly for miner |
| 05/20/1998 | EP0842349A1 Cutting tool holder retention system |
| 04/16/1998 | WO1998015714A1 A cutting bit assembly for impinging an earth strata |
| 04/16/1998 | CA2267306A1 A cutting bit assembly for impinging an earth strata |
| 04/14/1998 | US5738415 Pick holder and fixing sleeve for an extraction machine |
| 04/02/1998 | DE19630653C1 Bit for boring machine |
| 03/24/1998 | US5730502 Cutting tool sleeve rotation limitation system |
| 03/19/1998 | DE19637789A1 Planing machine for underground retrieval of coal or similar |
| 03/18/1998 | CN1176677A Method of cutting and cutting rotative bit |
| 03/10/1998 | US5725283 Apparatus for holding a cutting bit |
| 03/03/1998 | US5722733 Mounting of cutter picks |
| 02/24/1998 | US5720528 Rotatable cutting tool-holder assembly |
| 02/05/1998 | DE19630642A1 Tool for indenting machine with chisel holder |
| 01/29/1998 | WO1998003770A1 Cutting control process and device for detecting the depth of cut of kirving tools |
| 01/28/1998 | EP0656989B1 Cutting element for a coal cutting machine |
| 01/21/1998 | EP0819208A1 Pick holder extraction |
| 01/21/1998 | CN1171069A Composite cermet articles and method of making |
| 01/21/1998 | CN1171068A Composite cermet articles and method of making |
| 01/20/1998 | US5709433 Apparatus for continuous mining |
| 01/14/1998 | EP0817902A1 Tool for releasing a key on a cutter |
| 01/06/1998 | US5704267 Guide shoe for a cutting machine especially for a drum or disk shearer |
| 12/30/1997 | US5702160 Tool for crushing hard material |
| 12/30/1997 | CA2151830C Extraction undercut for flanged bits |
| 12/23/1997 | US5700061 Guide and drive arrangement for the winning machines of mineral winning installations |
| 12/17/1997 | CN2270805Y Pick fixator |
| 12/10/1997 | EP0811112A1 Method of cutting and cutting rotative bit |
| 12/10/1997 | CN1036673C Cutter head with underholing |
| 12/09/1997 | US5697046 Composite cermet articles and method of making |
| 12/09/1997 | US5697042 Composite cermet articles and method of making |
| 12/03/1997 | EP0809748A1 Chisel holder |
| 11/25/1997 | US5690393 Cutting tool retention system |
| 11/25/1997 | US5690392 Water supply system for a mining machine |
| 11/19/1997 | EP0807203A1 Continuous control system for a mining or tunnelling machine |
| 11/06/1997 | WO1997041334A1 Cutting tool retention system |
| 11/06/1997 | CA2251775A1 Cutting tool retention system |
| 11/04/1997 | US5683144 Cutting element with a base element and chisel holder |
| 10/23/1997 | WO1997039221A1 Apparatus for holding a cutting bit |
| 10/22/1997 | EP0760901B1 Retainer for a mining tool |
| 10/21/1997 | US5679445 First and second ceramic regions with variations in grain size and binder amounts; self-sharpening tools |
| 10/15/1997 | EP0800428A1 Composite cermet articles and method of making |
| 10/14/1997 | US5677042 Tips for excavation, mining; wear resistance |
| 10/08/1997 | EP0799103A1 Composite cermet articles and method of making |
| 10/07/1997 | US5673974 Dry dust removal device |
| 09/16/1997 | US5667279 Power distribution system |
| 08/21/1997 | DE19605378A1 Cutting chisel mounted on coal-cutting machine |
| 08/07/1997 | WO1997028353A1 Diamond coated cutting tool insert and method of making same |
| 08/07/1997 | CA2243712A1 Diamond coated cutting tool insert and method of making same |
| 07/31/1997 | WO1997027383A1 Fixing a cutting tool in its holder |
| 07/30/1997 | CN1155615A Process for teeth of coal mining machine |
| 07/15/1997 | US5647640 Method of operating a mining machine for seam mining |
| 07/08/1997 | US5645323 Concave cutter bit with sacrificial constraint |
| 07/03/1997 | WO1997023710A1 Chisel arrangement for a round shank chisel |
| 06/19/1997 | WO1997021906A1 Cutting tool sleeve rotation limitation system |
| 06/19/1997 | DE19547170A1 Milling roller with extraction equipment for mining work |
| 06/19/1997 | CA2238767A1 Cutting tool sleeve rotation limitation system |
| 06/17/1997 | CA2192523A1 Cutting drum for an open cast winning apparatus performing its winning action in both directions of travel |
| 05/22/1997 | WO1997018466A1 Detecting a boundary between two layers of material |
| 05/13/1997 | US5628549 Cutting tool sleeve rotation limitation system |
| 05/07/1997 | EP0771911A1 An active element for the support of at least one milling tool, suited to be applied on milling drums of operating machines for the removal of soils |
| 04/29/1997 | US5624162 Long-wall mining machine with a working chain |
| 04/22/1997 | US5623723 Heat treating green compacts |
| 04/10/1997 | DE19537386A1 Continuously operating mining machine with endless chain carrying cutters |
| 04/01/1997 | CA2005095C Bit assembly utilizing carbide insert |
| 03/27/1997 | WO1997011255A1 Device for reducing the danger of inflammability during the operation of a partial-cut tunnelling machine |
| 03/27/1997 | DE19535795A1 Test device for function of nozzles of chisel-controlled cutting trace nozzle |
| 03/26/1997 | CN1146229A Rotatable cutting bit and bit holder |
| 03/20/1997 | DE19624363A1 Mining machine with spray-nozzle-testing system |
| 03/12/1997 | EP0760901A1 Retainer for a winning a tool |
| 03/06/1997 | DE19532459A1 Gallery advance or extraction mining machine |
| 03/06/1997 | DE19531808A1 Guide and drive bar arrangement for mining extraction machine, partic. roller cutting machine running over chain crab conveyor |
| 03/05/1997 | EP0706606B1 Cutting element for a coal cutting machine |
| 03/04/1997 | US5607206 Cutting tool holder retention system |
| 02/27/1997 | WO1997007251A1 Hard composite and method of making the same |
| 02/25/1997 | US5605382 Cutting tool retention system |
| 02/19/1997 | EP0758711A2 Double tooth cutter for a cutting drum |
| 02/13/1997 | WO1997005363A1 Cutting tool holder retention system |
| 02/13/1997 | CA2228419A1 Cutting tool holder retention system |
| 02/11/1997 | US5601341 Drive gear and guide arrangement for a mining machine, in particular a disk shearer |
| 02/05/1997 | EP0757157A1 Instrument for breaking up solid material |
| 01/30/1997 | WO1996033600A3 Apparatus and method for continuous mining |
| 01/28/1997 | US5597393 Displaceable filtering apparatus for airborne contaminates |
| 01/09/1997 | DE19625509A1 Werkzeugkomponente Tool component |