| 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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| 05/09/2000 | US6059373 Pick holder extraction |
| 05/04/2000 | WO2000025003A2 Extraction controller for mining - extraction machines |
| 05/03/2000 | EP0997610A1 Ejectable holder for a cutting bit and cutting bit assembly |
| 05/03/2000 | EP0799103B1 Composite cermet articles and method of making |
| 04/27/2000 | WO2000023690A1 Control system for longwall face alignment |
| 04/26/2000 | CN1051830C Process for teeth of coal mining machine |
| 04/18/2000 | US6051079 Wear resistant, diamond enhanced cutting tool for excavating |
| 04/13/2000 | WO2000020723A1 Rotatable cutting bit and bit washer therefor |
| 04/13/2000 | WO2000020722A2 Cutting bit support member with a flange provided with an undercut for removal |
| 04/13/2000 | CA2346458A1 Rotatable cutting bit and bit washer therefor |
| 04/12/2000 | EP0991848A1 Chisel arrangement for cutting chisels of a tool holder mounted in a rotating manner |
| 04/12/2000 | EP0800428B1 Composite cermet article |
| 04/05/2000 | EP0990088A1 Nozzling device for chisel bits and a method for nozzling round shank chisel bits of a holing machine |
| 03/08/2000 | EP0842349B1 Cutting tool holder retention system |
| 03/01/2000 | CN1246171A Cutting toothholder retention system |
| 02/23/2000 | EP0695393B1 Extraction undercut for flanged bits |
| 02/22/2000 | US6027175 Method and apparatus for highwall mining |
| 02/08/2000 | CA2075619C Apparatus and method for continuous mining |
| 02/01/2000 | US6019434 Point attack bit |
| 02/01/2000 | US6018856 Device for removing and inserting the retaining clip of a coal mining drill bit |
| 01/27/2000 | WO2000004243A1 Cutting tool retainer |
| 01/27/2000 | CA2336677A1 Cutting tool retainer |
| 01/18/2000 | US6014826 Chain for trencher apparatus |
| 01/12/2000 | EP0970290A1 Pick holder and pick box assembly |
| 01/05/2000 | CN1240495A Cutting tool sleeve rotation limitation system |
| 12/28/1999 | US6007157 Slidably displaceable duct assembly for a mining machine |
| 12/14/1999 | US6000153 Tooth attachment for earth working equipment |
| 12/08/1999 | EP0962627A2 Cutting tool holder retention system |
| 12/01/1999 | EP0960265A1 Cutting toolholder retention system |
| 11/30/1999 | US5992405 Tool mounting for a cutting tool |
| 11/25/1999 | DE19821147A1 Shaft chisel for cutting hard metal surface has deflector plate with closing protection element |
| 11/04/1999 | DE19819140A1 Coal plow guide profile section on scraper conveyor line pan |
| 11/03/1999 | CN1234093A Cutting bit assembly for impinging earth strata |
| 10/19/1999 | US5967616 Electrical control system for apparatus and method for continuous underground mining |
| 10/13/1999 | CN2343342Y Pick for coal-cutting machine |
| 09/23/1999 | WO1999047791A1 Nozzling device for chisel bits and a method for nozzling round shank chisel bits of a holing machine |
| 09/22/1999 | EP0943783A2 Locking bolt for a cylindrical cutting tool |
| 09/22/1999 | EP0943051A1 Device for damping vibrations in a part-face cutting machines |
| 09/16/1999 | WO1999046479A1 Temporary ventilation system for mining or tunnelling |
| 09/10/1999 | WO1999045238A1 Mineral cutting apparatus etc. |
| 09/10/1999 | CA2263251A1 Fire suppression system for an automated mining system |
| 08/24/1999 | US5941154 Guide shoe for a cutting machine |
| 08/19/1999 | DE19805666A1 Guide unit for cutting machine used in mine |
| 08/17/1999 | US5938376 Automated temporary roof support, bolter and method |
| 08/17/1999 | US5938288 Automatic control system and method for a machine used for excavating drifts, tunnels, stopes, or caverns |
| 08/05/1999 | DE19858281A1 Chisel system for coal mining plane |
| 08/03/1999 | US5931542 Device and method for preventing wear on road milling and trenching equipment |
| 07/29/1999 | DE19803166A1 Round shaft chisel for coal cutting machine |
| 07/29/1999 | DE19802225A1 Coal face planing machine with replaceable chisels |
| 07/22/1999 | DE19801348A1 Driving and guide arrangement for scraper chain conveyor of a drum cutter machine |
| 07/15/1999 | DE19815445C1 Drive group for rock winning machine |
| 07/13/1999 | US5921330 Carbide particles embedded in steel matrix |
| 06/30/1999 | CN1043917C Water supply system for mining machine |
| 06/10/1999 | DE19809850C1 Spray head for rock winning cutter |
| 06/02/1999 | DE19809344C1 Rock cutter for winning machine |
| 05/26/1999 | CN1217417A Cutting pick for coal-getter and technology thereof |
| 05/19/1999 | EP0916771A2 Milling tooth for the working of the soil |
| 05/18/1999 | US5904408 Rotary cutter and mounting arrangement for cutting tools |
| 05/12/1999 | CN1216594A Apparatus for holding a cutting bit |
| 05/06/1999 | EP0912816A1 Cutting control process and device for detecting the depth of cut of kirving tools |
| 05/06/1999 | DE19839440A1 Pick box for receiving a removable liner sleeve having an enlarged head |
| 04/22/1999 | WO1999006191A3 A frustum cutting bit arrangement |
| 04/22/1999 | DE19745164A1 Chisel with head and shaft for tool holder |
| 04/21/1999 | CN1214283A Inserted cast cutting tooth of coal cutter |
| 04/14/1999 | EP0908601A1 A cutting tool insert |
| 03/23/1999 | US5884979 Cutting bit holder and support surface |
| 03/17/1999 | EP0673468A4 Cutting tool having hard tip with lobes. |
| 03/04/1999 | WO1999010551A1 A PICK-STYLE TOOL WITH A CERMET INSERT HAVING A Co-Ni-Fe-BINDER |
| 03/04/1999 | CA2302302A1 A pick-style tool with a cermet insert having a co-ni-fe-binder |
| 02/24/1999 | EP0897457A1 Cutting tool retention system |
| 02/23/1999 | US5873423 Frustum cutting bit arrangement |
| 02/16/1999 | US5871261 Longwall mine face conveyor pan and method of fabricating |
| 02/16/1999 | US5871260 Mining ultra thin coal seams |
| 02/11/1999 | WO1999006191A2 A frustum cutting bit arrangement |
| 01/28/1999 | DE19833466A1 Rotary cutting device with drum |
| 01/19/1999 | CA2050871C Apparatus for holding a cutting bit |
| 01/14/1999 | DE19729053A1 Dust-suppression nozzle for tunnelling and underground mining |
| 01/07/1999 | WO1999000580A1 Chisel arrangement for cutting chisels of a tool holder mounted in a rotating manner |
| 01/07/1999 | EP0757157A4 Instrument for breaking up solid material |
| 01/06/1999 | CN1204381A Cutting tool sleeve rotation limitation system |
| 12/24/1998 | DE19749052C1 Indexing method for mining conveyor |
| 12/16/1998 | EP0817902B1 Tool for releasing a key on a cutter |
| 12/16/1998 | EP0807203B1 Continuous control system for a mining or tunnelling machine |
| 12/08/1998 | US5845547 Tool having a tungsten carbide insert |
| 11/19/1998 | DE19720635A1 Shank cutter with cutter head and cutter shaft |
| 11/18/1998 | EP0877855A1 Diamond coated cutting tool insert and method of making same |
| 11/17/1998 | US5837071 Diamond coated cutting tool insert and method of making same |
| 11/10/1998 | US5833323 Cutting toolholder retention system |
| 11/10/1998 | US5833017 Cutting bit assembly for impinging an earth strata |
| 10/27/1998 | US5826478 Nozzle for supplying a liquid to a rotating tool |
| 10/21/1998 | EP0872627A1 Cutting bit holder and support surface |
| 10/21/1998 | CN1196771A Cutting tool holder retention system |
| 10/20/1998 | US5823632 Self-sharpening nosepiece with skirt for attack tools |
| 09/23/1998 | CN1194011A Hard composite and method of making the same |
| 09/22/1998 | US5810449 Cutting drum for an open cast apparatus performing its winning action in both directions of travel |
| 09/22/1998 | US5810447 Apparatus and method for continuous mining |
| 09/22/1998 | US5810102 Reversible bit assembly |
| 09/15/1998 | US5806934 Method of using composite cermet articles |
| 09/11/1998 | WO1998039553A1 Pick holder and pick box assembly |
| 09/02/1998 | EP0809748B1 Chisel holder |