| Patents for E21F 13 - Transport specially adapted to underground conditions (2,802) |
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| 09/22/1993 | CN2142501Y Inclined well channel machine type Full range normal-closed buffer device |
| 09/21/1993 | US5246274 Remote mining haulage system with self-advancing mobile tailpiece and method of operating same |
| 09/15/1993 | CN1076246A Sealed conveyer for mine |
| 09/09/1993 | DE4207229A1 Screen wall for long wall conveyor with inclined setting - has hinged door in side wall access aperture,swivelable in direction of working face |
| 09/09/1993 | DE4207227A1 Height-adjustable screen wall for long wall conveyor - has side plates,each with a slide guide stop at rear,in which slide guide tongues of slide brackets |
| 09/01/1993 | CN2141468Y Three-section connection middle trough for conveyer |
| 08/18/1993 | CN2140430Y Spiral pressure energy absorption sliding-frictional resistance |
| 08/18/1993 | CN2140429Y Reloader steering limit stand and its supporting sheave pulley mechanism |
| 08/03/1993 | US5232269 Launch vehicle for continuous mining apparatus |
| 07/28/1993 | CN2139176Y Receiver for mine rail transport track signals |
| 07/08/1993 | DE4200164A1 Yoke for conveyor or other mining machinery - has parallel telescopic horizontally sliding hollow beams activated by rams to thrust against tunnel sides |
| 07/07/1993 | CN2137717Y Shifting conveyer for transport of tunnel-digging |
| 06/09/1993 | CN1072903A Method of continuous and adjustable transport for belt conveyor and its device |
| 05/12/1993 | CN2132834Y Automatic limitting electro-hydraulic push rod driver |
| 03/25/1993 | DE4130982A1 Anchoring girder for machinery in roadways and tunnels - has stop box with vertical axis, about which pivot jibs with support shoes |
| 03/17/1993 | CN2128310Y Stop block for inclined shaft |
| 03/17/1993 | CN1070059A Acoustic-optic alarm for under-well curved road and three-switch door |
| 02/16/1993 | US5186309 Transfer station for transferring material between conveyors in a mine working |
| 01/27/1993 | CN1068393A Double-track cable pulley |
| 12/30/1992 | CN2126313U Telescopic energy-saving bidirectional belt conveyer |
| 12/24/1992 | DE4142632C1 Walking support for mine tunnel roof - has jacks to support roof cam and breaker shield |
| 12/23/1992 | CN1067291A Operating equipment of transport vehicles in mine and controlling system thereof |
| 12/09/1992 | CN2124310U Flexible car-stopping railing energy absorber |
| 11/26/1992 | DE4116662A1 Moving coal from longwall face conveyor onto frontage road conveyor - using cruciform frame connecting two conveyors at right angles and suspended intermediate conveyor |
| 11/19/1992 | EP0513338A1 Launch vehicle for continuous mining apparatus. |
| 11/18/1992 | CN2122235U Automatic controlling apparatus for preventing tram from escape |
| 11/17/1992 | US5163545 Auxiliary conveying apparatus for use with mobile articulated conveyors |
| 11/10/1992 | US5161671 Transfer station for transferring material between conveyors in a mine working |
| 11/10/1992 | US5161670 Auxiliary conveying apparatus for elevationally selectable discharge |
| 11/04/1992 | CN2120882U Join device for mine deliver machine scillating guide |
| 11/04/1992 | CN2120881U Self-protection device for proventing mine slope colliding |
| 10/21/1992 | CN2119504U Cage |
| 10/20/1992 | US5156256 Elevated auxiliary conveying apparatus |
| 10/01/1992 | WO1992010643A3 Apparatus and method for continuous mining |
| 09/30/1992 | CN2117667U Gap self-adjusting linear motor for pushing vehicle machine |
| 09/23/1992 | CN2116782U Hydraulic coupler |
| 09/23/1992 | CN1064653A Explosion-proof electric swing link. gate type buffer stops for slope |
| 09/16/1992 | CN2116093U Bottom unloading bucket |
| 09/16/1992 | CN2116092U Turn-over-proof device for bucket |
| 09/10/1992 | DE4204792A1 Hydraulic conveyor anchor mechanism - has anchor cylinder positioned parallel to conveyor |
| 08/26/1992 | CN2114030U Folding pneumatic safety gate |
| 08/20/1992 | DE4104825A1 Transfer station for material from longwall to roadway conveyor - comprises framed hopper with raking chutes and electric motors and endless chain to move materials |
| 07/29/1992 | CN1063140A Apparatus and method for continuous mining |
| 07/23/1992 | WO1992010644A3 Launch vehicle for continuous mining apparatus |
| 07/21/1992 | US5131789 Mill hole liner ring connector assembly |
| 07/15/1992 | CN2110086U Spiral moving-sliding apparatus |
| 07/08/1992 | CN2109446U Hydraulic scrape bucket device |
| 06/23/1992 | US5123709 Hydraulic aligner device for flexible continuous tram mining machine |
| 06/17/1992 | CN2107446U Multifunctional belt conveyer |
| 06/17/1992 | CN2107413U Single rail hoist for anti-explosive special accumulator |
| 06/11/1992 | WO1992010644A2 Launch vehicle for continuous mining apparatus |
| 06/11/1992 | WO1992010643A2 Apparatus and method for continuous mining |
| 05/12/1992 | US5112111 Apparatus and method for continuous mining |
| 04/04/1992 | WO1992006280A1 Ore pass rush eliminator |
| 04/04/1992 | CA2093343A1 Ore pass rush eliminator |
| 03/24/1992 | US5098065 Mine extraction device and method |
| 03/05/1992 | DE4027941A1 Scraper chain conveyor - comprises combined face and road conveyor linked together around roller and equipped with driving cylinder |
| 02/26/1992 | CN2097188U Energy-saving safety undergroud conveyer |
| 02/19/1992 | CN2096501U Special-purpose transport mine car |
| 01/28/1992 | US5083895 Stacking device for mine cribbing |
| 01/23/1992 | DE4119443A1 Frame for transporting mining equipment - has floor with raised edges of hollow triangular cross=section |
| 01/16/1992 | DE4022195A1 Return lock for lower chain of mining conveyor - has flap-like plate swivelling towards base plate of conveyor |
| 01/01/1992 | CN2091950U Plates connected with divided chains for protecting coveyer and its shafts |
| 12/31/1991 | US5076749 Material handling platform for material transport vehicle |
| 12/17/1991 | US5072826 Having a drive sprocket at one end of the conveyor |
| 10/15/1991 | US5056655 Highwall miner with conveyor module |
| 10/02/1991 | CN2085757U Protector for mine car running in inclined shaft |
| 09/26/1991 | DE4009052A1 Working very thin seams in longwall face - involves series of units coupled together and each having endless chains driven by hydraulic motors |
| 09/11/1991 | CN1013854B Shiftable transport train |
| 08/21/1991 | CN2083195U Plastic chute for mines |
| 07/04/1991 | DE4010499C1 Transport system for mining roadway - has rails suspended from roof which individually powered trains run and undivided sections |
| 06/26/1991 | CN2079592U Sefety device for inclined shaft |
| 06/11/1991 | US5022789 Method and machine for constructing shafts |
| 05/29/1991 | CN2077858U Scraper type rockloader |
| 05/08/1991 | EP0305415B1 Mobile pump installation |
| 05/08/1991 | CN2076603U Water resistant type high-quality controller of conveyer for working face |
| 04/17/1991 | CN2075164U Mine car special for transporting cement |
| 04/16/1991 | US5007496 Automated underground haulage truck |
| 04/03/1991 | EP0420347A1 Underground material-transporting system |
| 04/03/1991 | CN2074291U Framework for coal-conveying shute of drag-flight conveyer |
| 03/21/1991 | DE3930179A1 Extractor for mining conveyor - has support units in pairs one behind the other on either side of conveyor |
| 03/13/1991 | CN2072959U Unloading frame for mine waste rock |
| 03/06/1991 | CN1049700A Microcomputerized safety monitoring method for inclined-shaft with and its bumper |
| 03/06/1991 | CN1011876B Belt capturing device |
| 02/27/1991 | CN2072152U Pipe mine car for conveying materials |
| 02/27/1991 | CN2072075U Channel scraper conveyer |
| 02/26/1991 | US4995783 Material handling platform for material transport vehicle |
| 02/07/1991 | DE3925672A1 Device for mounting top bracket on chain drag conveyor - comprises drawer runners fixed to head surface with nut and bolt fixing |
| 12/26/1990 | CN1048011A Shiftable transport train |
| 12/18/1990 | CA1277941C Material transfer unit for ground-mounted fct |
| 11/21/1990 | CN1047057A Automatic stopper to preventcars running off in sloped lateral gates |
| 11/13/1990 | US4969691 Method and apparatus permitting beltway advance in a mining scheme |
| 11/07/1990 | CN2065164U Automatic brake gear for rope-broken or unhook of lifting bogie truck in slant |
| 10/02/1990 | CA1274808A1 Transport for heavy loads |
| 08/29/1990 | CN2061209U Anti-friction flexible rope-towed ground roller |
| 08/09/1990 | WO1990007629A3 Device for sinking galleries or the like in underground mining or the like |
| 07/12/1990 | WO1990007629A2 Device for sinking galleries or the like in underground mining or the like |
| 07/05/1990 | DE3916767A1 Vorrichtung zum senken von strecken od. dgl. in untertaegigen grubenbetrieben od. dgl. Apparatus for reducing stretch of od. Like. Untertaegigen in mine operated od. Like. |
| 06/20/1990 | CN2058429U Photoelectric automatic controller for prevention of running car in mine |
| 06/19/1990 | US4934874 For clearing sludge from the galleries of underground mines |