Assignee
DBT GMBH
DE88 patents
Top patents by PatentIndex Score
US5641058AJun 24, 1997
Method and a device for tensioning endless drive belts
DBT GMBH113 citations95
US5601341AFeb 11, 1997
Drive gear and guide arrangement for a mining machine, in particular a disk shearer
DBT GMBH23 citations93
US8038558B2Oct 18, 2011
Chain drive or return arrangement and chain assembly and sprocket employed therein
DBT GMBH29 citations92
US7117989B2Oct 10, 2006
Device for detecting the tension of scraper chains
DBT GMBH65 citations92
US6708817B2Mar 23, 2004
Drive and tensioning station of a chain scraper conveyor
DBT GMBH24 citations92
US6073654AJun 13, 2000
Hydraulically trippable check valve for underground mine support hydraulics
DBT GMBH25 citations92
US5947265ASep 7, 1999
Chain drum arrangement for scraper chain conveyors
DBT GMBH37 citations92
US5927479AJul 27, 1999
Chain drum arrangement for scraper chain conveyors
DBT GMBH21 citations92
US7490911B2Feb 17, 2009
Drive device for rotating and oscillating a tool, and a compatible tool for mining
DBT GMBH27 citations91
US7600822B2Oct 13, 2009
Method for the mining of coal and coal planer installation
DBT GMBH11 citations84
US7399039B2Jul 15, 2008
Baseplate plow guide section
DBT GMBH9 citations83
US7393061B2Jul 1, 2008
Coal plow cutter
DBT GMBH10 citations83
US7731298B2Jun 8, 2010
Shearer-loader drive subassembly and guide shoe for it
DBT GMBH17 citations82
US7631942B2Dec 15, 2009
Device for milling rock and other materials and method for milling rock or the like using said device
DBT GMBH14 citations82
US7032743B2Apr 25, 2006
Conveyor pan
DBT GMBH18 citations81
US6896121B2May 24, 2005
Conveyor pan
DBT GMBH17 citations81
US6615705B2Sep 9, 2003
Hydraulic cylinder
DBT GMBH18 citations81
US7540693B2Jun 2, 2009
Method for pillar recovery in chamber-and-pillar working and tubbing unit for pillar recovery
DBT GMBH9 citations80
US5743679AApr 28, 1998
Hydraulic shield support frame
DBT GMBH22 citations80
US5938000AAug 17, 1999
Conveyor chute for chain scraper conveyors, in particular for use in mining
DBT GMBH17 citations79
US5913403AJun 22, 1999
Drive station for a scraper-chain conveyor usable in an underground mine working
DBT GMBH19 citations79
US7562764B2Jul 21, 2009
Entry conveyor and pan section for the same
DBT GMBH17 citations77
US7604113B2Oct 20, 2009
Chain wheel arrangement
DBT GMBH17 citations75
US5927476AJul 27, 1999
Conveyor pan connection for scraper chain conveyors in particular for use in mining
DBT GMBH13 citations74
US5700061ADec 23, 1997
Guide and drive arrangement for the winning machines of mineral winning installations
DBT GMBH12 citations74
US7428861B2Sep 30, 2008
Valve for hydraulic props of shield-type support frames, and shield-type support frame
DBT GMBH7 citations73
US7073870B2Jul 11, 2006
Bit holder for a ploughing bit of a coal or extraction plough and ploughing bit
DBT GMBH8 citations73
US6843364B2Jan 18, 2005
Toggle bar link for conveyor and guideway pans and toggle bars, toggle bar sockets, safety elements, pans and assembly tools for toggle bar links
DBT GMBH8 citations73
US6655514B1Dec 2, 2003
Scraper chain for scraper chain conveyors
DBT GMBH6 citations73
US6607074B2Aug 19, 2003
Drive station for a chain scraper conveyor for mining operations
DBT GMBH11 citations73
US6513647B1Feb 4, 2003
Scraper chain for scraper chain conveyors
DBT GMBH11 citations73
US6179386B1Jan 30, 2001
Drive chain channel arrangement for longwall shearer
DBT GMBH11 citations73
US6073752AJun 13, 2000
Scraper chain belt for scraper chain conveyors
DBT GMBH8 citations73
US5931283AAug 3, 1999
Scraper-chain assembly for scraper-chain conveyors
DBT GMBH8 citations73
US7282826B2Oct 16, 2007
Driving device for sprocket wheels of chain drives
DBT GMBH7 citations72
US6959769B2Nov 1, 2005
Plough chain strand comprising a chain lock link
DBT GMBH7 citations72
US6837269B2Jan 4, 2005
Electrohydraulic control device
DBT GMBH9 citations72
US5658085AAug 19, 1997
Toggle securing device for toggle joints in chain conveyors and the like
DBT GMBH13 citations72
US6209440B1Apr 3, 2001
Hydraulic double telescopic prop
DBT GMBH9 citations71
US6008605ADec 28, 1999
Method for determining the active power of asynchronous electric motors
DBT GMBH13 citations71
US7201541B2Apr 10, 2007
Prop head bearing
DBT GMBH17 citations70
US6966429B2Nov 22, 2005
Conveyor pan
DBT GMBH8 citations70
US6848748B2Feb 1, 2005
Mining system with drilling, loading, conveyor, and support
DBT GMBH10 citations70
US6672674B2Jan 6, 2004
Longwall mining with blasting
DBT GMBH6 citations70
US7177709B2Feb 13, 2007
Controller for underground mining
DBT GMBH9 citations69
US6186597B1Feb 13, 2001
Pick system for mining ploughs, in particular coal ploughs
DBT GMBH10 citations69
US6612424B2Sep 2, 2003
Drive shaft for scraper chain conveyors for double inboard and double outer chain conveyor belts
DBT GMBH3 citations63
US5579896ADec 3, 1996
System for arresting scraper-conveyor chain
DBT GMBH6 citations63
US5580135ADec 3, 1996
Drive chain for long-wall mining machine
DBT GMBH2 citations63
US7503629B2Mar 17, 2009
Pick locking device including a clamp element and a retaining pin
DBT GMBH3 citations62
Showing the top 50 of 88 patents by PatentIndex Score.