TIEFENBACH CONTROL SYSTEMS GMBH

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Patent Activity in the Last 10 Years

Technologies

Intl Class Technology Matters Rank in Class
 
  
 
E21D SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS 610
 
  
 
F16K VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING271
 
  
 
E21C MINING OR QUARRYING121
 
  
 
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
8960807 Hydraulic circuit for longwall miningJun 18, 10Feb 24, 15[E21D, F15B]
8876218 Hydraulic circuit for longwall supportMar 15, 12Nov 04, 14[E21D, E21C]
8726937 Control device for an extracting unit in the work face of a mineAug 15, 12May 20, 14[F15B]
7494190 Coal face support in a mineDec 11, 03Feb 24, 09[E21D]
7458307 Hydraulic control for a longwall supportOct 26, 05Dec 02, 08[E21D]
7455368 Control mechanism for the extension units in the longwall face of a mineDec 11, 03Nov 25, 08[E21D]
7357152 Releasable non-return valveJan 11, 07Apr 15, 08[F16K]

Expired/Abandoned/Withdrawn Patents

Patent # Title Status Filing Date Issue/Pub Date Intl Class
8651581 Safety device for the movable excavation devices in an underground longwall mineExpiredJul 12, 11Feb 18, 14[E21C]
2014/0026,648 TIEFENBACH CONTROL SYSTEMS GMBHAbandonedMar 28, 12Jan 30, 14[G05D]
8567869 Shield control device for carrying out the longwall function of a longwall unit in the longwall face working in a mineExpiredMay 09, 08Oct 29, 13[E21D]
2011/0102,298 SCREENAbandonedApr 21, 09May 05, 11[G09G]
7659675 Device for illuminating the stope support at a longwall faceExpiredApr 15, 04Feb 09, 10[H05B]
7659832 Electrically controlled actuating element on a machineExpiredOct 04, 05Feb 09, 10[F16K]
7549709 Mining deviceExpiredSep 14, 07Jun 23, 09[E21D]
7478884 Hydraulic switching mechanism for longwall supportsExpiredMay 25, 06Jan 20, 09[E21D]
7455367 Longwall support control for controlling the movements of longwall support units in the longwall of a mineExpiredDec 11, 03Nov 25, 08[E21D]
7416369 Timbering and walling control for controlling the movements of timbering and walling units in the coal face of a mineExpiredDec 11, 03Aug 26, 08[E21D]
2008/0054,706 EXTRACTION CONTROLLER FOR COAL MININGAbandonedSep 14, 07Mar 06, 08[E21C]
2007/0262,003 METHOD TO OPERATE A FLUSHABLE FILTER COLUMN FOR A LIQUIDAbandonedMay 11, 07Nov 15, 07[B01D]

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