| 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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| 04/06/1993 | CA1315829C Tooth for a digging bucket of an excavator |
| 04/02/1993 | CA2078417A1 Carbide tip and pick |
| 04/01/1993 | DE4131750A1 Dust-laying system of nozzles for coal mining cutter - adjusts number of nozzles opened by electrically controlled valve in accordance with direction of cutter movement |
| 03/23/1993 | US5195805 Water spray nozzle for use with a mineral pick box |
| 03/16/1993 | US5193883 Process for controlling longwall shearing and heading machines along a cutting horizon between coal and rock |
| 03/03/1993 | EP0528917A1 Mobile continuous mining machine |
| 03/02/1993 | US5190352 Mining machine with cascading conveyor system and method of conveying |
| 02/25/1993 | DE4226976A1 Werkzeuge Tools |
| 02/24/1993 | CN1069315A Method of mining coal layer in certain plaoughing and paring depth |
| 02/23/1993 | US5188427 Twin scrubber and air diffuser for a continuous miner and method of ventilation |
| 02/21/1993 | CA2076437A1 Tools |
| 02/16/1993 | US5185935 Method and apparatus for separation measurement and alignment system |
| 02/11/1993 | DE4126203A1 Water spray diverter integrated in pick of coal mining roller cutter - has twin channel of which one serves pick itself and other sprays cutter path |
| 02/09/1993 | US5184873 Guides for mineral winning machines |
| 02/02/1993 | CA1313382C Cutter bit |
| 01/26/1993 | US5181934 Method for automatically adjusting the cutting drum position of a resource cutting machine |
| 01/20/1993 | EP0523328A2 Adjustable spraying valve |
| 01/14/1993 | DE4122967A1 Hammer holder device with fixed hammer for extraction machine - is for use on cutting rollers in coal mining and has spray fluid jet fed to area of hammer point and protected from three sides |
| 01/07/1993 | EP0521413A1 Fixing of a shearing pick in its holder |
| 12/30/1992 | CN2126313U Telescopic energy-saving bidirectional belt conveyer |
| 12/23/1992 | CN2125702U Automatic sprinkler unit for coal mine conveyer |
| 12/15/1992 | CA1311505C Selectively phased water supply of a cutter head |
| 12/01/1992 | US5167438 Guides for mineral winning ploughs |
| 12/01/1992 | CA2069843A1 Method of working coal seams to a defined preset depth of cutting during ploughing with a cutter |
| 11/10/1992 | US5161859 Excavating tool cutting insert |
| 11/10/1992 | US5161858 Arrangement for guiding a cutting machine or similar mining machine at the conveyor trough of a drag-chain conveyor |
| 11/10/1992 | US5161857 Teleoperated control system for underground room and pillar mining |
| 11/10/1992 | US5161627 For a mining machine |
| 10/27/1992 | US5158341 Method of steering a mining machine |
| 10/22/1992 | DE4212785A1 Verfahren zum steuern einer bergbaumaschine, insbesondere einer doppelendigen auslegerschraemmaschine A method for controlling a mining machine, in particular a double-ended auslegerschraemmaschine |
| 10/01/1992 | WO1992010643A3 Apparatus and method for continuous mining |
| 09/10/1992 | DE4204542A1 Housing for pick bit |
| 09/08/1992 | US5145236 Method and apparatus for controlling dust produced by a continuous miner |
| 09/08/1992 | CA1307299C Erosion resistant cutting bit with hardfacing |
| 09/08/1992 | CA1307298C Contamination reducing mining system for harmful ores |
| 09/01/1992 | CA1307011C Rotatable cutting tool |
| 08/27/1992 | DE4105238A1 Coal plane blade with flat parallel arresting pin - has cutting edge and shaft which can be inserted in holder with pocket, arresting pin engaging with outer contour of holder |
| 08/25/1992 | US5141289 Cemented carbide tip |
| 08/18/1992 | US5139313 Guides for mineral winning ploughs |
| 08/12/1992 | EP0498732A1 Unit of tool and tool carrier for tunnelling machines |
| 08/11/1992 | US5137336 Process for the automated winning of mineral, such as coal, in a longwall working |
| 08/06/1992 | WO1992013175A1 Pick for extraction machines |
| 08/06/1992 | DE4202246A1 Coal-face slitting machine - provides directional signal sequence from switched electromagnets for equipment before and behind machine to be removed from intended path |
| 07/29/1992 | CN1063140A Apparatus and method for continuous mining |
| 07/22/1992 | CN1062951A Guiding device of mining machines |
| 07/21/1992 | US5131725 Rotatable cutting tool having an insert with flanges |
| 07/16/1992 | DE4102140A1 Cutting tool for winning coal - has spring loaded conical headed catch in its shaft to engage in recess in holder |
| 07/07/1992 | CA1304785C Long range multiple point wireless control and monitoring system |
| 06/30/1992 | US5125720 Mounting arrangement for cutter socket |
| 06/25/1992 | DE4041490A1 Machine way for drum loader - comprises twin channel box section elements bolted to conveyor through parallel to longwall side face |
| 06/17/1992 | CN1017081B Method for remote control of coal shearer |
| 06/16/1992 | US5121971 Method of measuring uncut coal rib thickness in a mine |
| 06/11/1992 | WO1992010643A2 Apparatus and method for continuous mining |
| 06/11/1992 | DE4039217A1 Round shaft chisel - has base body on which is hard metal point and wear-resistant layer on ring surface adjacent to point |
| 06/09/1992 | US5120112 Vane type conveyor for a mining machine drum |
| 06/03/1992 | EP0487531A1 Rotatable cutting tool |
| 05/26/1992 | US5116103 Method of steering a mining machine |
| 05/26/1992 | CA1301781C Rotatable cutting bit |
| 05/19/1992 | US5114213 High pressure water assisted mining and tunnelling machine |
| 05/12/1992 | US5112165 Tool for cutting solid material |
| 05/12/1992 | US5112111 Apparatus and method for continuous mining |
| 05/05/1992 | US5110189 Redundant remote control system used on a continuous miner and method of using same |
| 04/21/1992 | US5106166 Cutting bit holding apparatus |
| 04/21/1992 | US5106162 Method of steering a mining machine |
| 04/14/1992 | US5104194 Continuous miner with improved duct system and method of increasing duct cross section |
| 03/26/1992 | DE4029895A1 Steering coal winning machine - involves swinging segments and arm equipped with chisels connected to measuring instruments through strain-measuring strips |
| 03/24/1992 | US5098167 Tool block with non-rotating, replaceable wear insert/block |
| 03/24/1992 | US5098166 Device for feeding fluid for the spraying of picks in a shearing drum |
| 03/08/1992 | CA2050864A1 Cutting bit holding apparatus |
| 03/05/1992 | WO1992004529A1 Rotatable cutting tool |
| 03/04/1992 | CN1059183A Guide of mining planing machine |
| 03/04/1992 | CN1059182A Guide of planing machine for make flank loading on trough of chain scraper conveyer |
| 03/04/1992 | CN1059181A Guide of mining planing machine |
| 03/03/1992 | US5092660 Cutter bit assemblies and arrangements for use with mining or tunnelling machines |
| 03/03/1992 | US5092657 Stratum boundary sensor for continuous excavators |
| 03/03/1992 | US5092310 Mining pick |
| 02/25/1992 | CA1296203C Round shaft bit |
| 02/18/1992 | US5088797 Method and apparatus for holding a cutting bit |
| 02/18/1992 | CA2048403A1 Rotary cutting head |
| 02/13/1992 | DE4024970A1 Determining response threshold of overload system - involves shaft driven through gearbox by motor with measuring gauge |
| 02/11/1992 | US5087101 Power spiral conveyor section and method |
| 02/11/1992 | US5087099 Long range multiple point wireless control and monitoring system |
| 02/06/1992 | DE4024818A1 Extraction planing machine guide - fits on front side of chain scraper on flow channels |
| 01/29/1992 | EP0468214A1 Cutting insert utilizing superabrasive compacts |
| 01/26/1992 | CA2046768A1 Cutting insert utilizing superabrasive compacts |
| 01/22/1992 | CN1015317B Mining machine |
| 01/21/1992 | US5082331 Continuous miner with duct assembly |
| 01/16/1992 | DE4029635A1 Furnished profile for scraper chain conveyor |
| 01/16/1992 | DE4021398A1 Extractor for underground mine - has rams in groups thrusting against face and reducing coupling free movement |
| 01/07/1992 | US5079640 Motion tracking device for a moving object such as a mechanical miner |
| 01/07/1992 | US5078219 Concave drag bit cutter device and method |
| 12/27/1991 | EP0462485A2 Improved flighting section and tooth holder |
| 12/24/1991 | US5074623 Tool for cutting solid material |
| 12/10/1991 | US5071195 Tool and nozzle supporting device for use in mining machines |
| 11/26/1991 | US5067775 Retainer for rotatable bits |
| 11/21/1991 | DE4015691A1 Connecting device for two side elements of chain cutter conveyor - comprises two profiled connecting assemblies hooked into recesses in gutter |
| 11/18/1991 | WO1991018184A1 Mobile continuous mining machine |
| 11/18/1991 | CA2083181A1 Mobile continuous mining machine |
| 11/14/1991 | DE4015172A1 Plane guide part screw fixture device - functions on groove shields of chain scraper extractor in mining industry |
| 11/14/1991 | DE4015171A1 Chain scraper extractor - has integral plane guide for mining extraction operations |