DBT GMBH

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
B65G TRANSPORT OR STORAGE DEVICES, e.g. CONVEYERS FOR LOADING OR TIPPING; SHOP CONVEYER SYSTEMS; PNEUMATIC TUBE CONVEYERS 463
 
  
 
E21C MINING OR QUARRYING319
 
  
 
B60K ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS; AUXILIARY DRIVES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST, OR FUEL SUPPLY, OF PROPULSION UNITS, IN VEHICLES 192
 
  
 
E21D SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS 115
 
  
 
F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR 144

Top Patents (by citation)

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Recent Publications

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Recent Patents

Patent # Title Filing Date Issue Date Intl Class
6672674 Longwall mining with blastingMar 04, 03Jan 06, 04[E21C]
6279734 Chain drum arrangementSep 21, 99Aug 28, 01[B65G]
5513902 Driving system for driving flexible elongate members, such as chains or scraper-chain assemblies, in mineral mining installations and method of operatingMay 18, 94May 07, 96[B60K, E21C]
5287955 Connections for inter-connecting the pans of scraper-chain conveyorsAug 13, 92Feb 22, 94[B65G]
5275469 Method of working coal seams to a defined preset depth of cutting during ploughing with a cutterMay 29, 92Jan 04, 94[E21D, E21C]
5267640 Transfer station assembly for scraper-chain conveyorsJan 08, 93Dec 07, 93[B65G]
5224582 Channel sections for scraper-chain conveyorsFeb 28, 91Jul 06, 93[B65G]
5159872 Valve units for use in hydraulic control systems of mining equipmentApr 10, 91Nov 03, 92[F15B]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
2006/0250,815 Mine lighting deviceAbandonedMay 17, 04Nov 09, 06[B64D]
7117989 Device for detecting the tension of scraper chainsExpiredJul 16, 04Oct 10, 06[B65G]
2006/0219,306 Hydraulically switchable directional control valveAbandonedMay 10, 04Oct 05, 06[F15B]
2006/0148,311 SensorAbandonedDec 07, 05Jul 06, 06[H01R]
2006/0119,188 Drive device for mining machinesAbandonedSep 21, 05Jun 08, 06[H02N]
2005/0186,471 Intrinsically-safe battery power supply for underground miningAbandonedJan 25, 05Aug 25, 05[H01M]
2005/0170,924 Sprocket wheel for underground miningAbandonedJan 21, 05Aug 04, 05[F16H]
2005/0151,445 Piezoelectric actuator unitAbandonedJan 10, 05Jul 14, 05[H02N]
6872025 Toggle retainer for toggle connectionsExpiredDec 19, 02Mar 29, 05[F16D]
2005/0053,430 Face equipment for mining machineryAbandonedSep 07, 04Mar 10, 05[E21D]
6843364 Toggle bar link for conveyor and guideway pans and toggle bars, toggle bar sockets, safety elements, pans and assembly tools for toggle bar linksExpiredMar 07, 01Jan 18, 05[B65G]
2004/0196,160 Face support control systemAbandonedMar 12, 04Oct 07, 04[G08C, F17D, E03B, E03C]
6799675 Toggle retainer for toggle connectionsExpiredNov 21, 02Oct 05, 04[B65G]
2003/0194,886 Electrohydraulic control systemAbandonedApr 10, 03Oct 16, 03[H01R]
2003/0137,421 Protective working device for minersAbandonedJan 17, 03Jul 24, 03[G08B]
6481933 Powered support frame for large seam thicknesses with controlled gap sealing platesExpiredNov 06, 00Nov 19, 02[E21D]
6267449 Guide arrangement for a drum-type mineral cutting machineExpiredSep 17, 99Jul 31, 01[E21C]
6179386 Drive chain channel arrangement for longwall shearerExpiredJan 15, 99Jan 30, 01[E21C]
6073752 Scraper chain belt for scraper chain conveyorsExpiredDec 15, 97Jun 13, 00[B65G]
5658085 Toggle securing device for toggle joints in chain conveyors and the likeExpiredFeb 01, 96Aug 19, 97[E21F, B65G]

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