E21D

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Description

SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS (soil-conditioning or soil-stabilising materials C09K 17/00; cutting machines for mining or quarrying E21C; safety devices, transport, rescue, ventilation or drainage E21F)

Recent Patents

Not Available
Patent #TitleFiling DateIssue DatePatent Owner
8,814,472 Tunnel excavation apparatus and tunnel excavation method Nov 21, 12 Aug 26, 14 , KABUKI CONSTRUCTION CO., LTD.
8,814,476 Method, system, use of the system and reinforcement member for rock reinforcement May 05, 10 Aug 26, 14 , MALMAFÄLTEN AB
8,807,877 Tensionable spiral bolt with resin nut and related methods Sep 21, 09 Aug 19, 14 RHINO TECHNOLOGIES LLC, RHINO TECHNOLOGIES LLC
8,801,336 Rock bolt Dec 06, 12 Aug 12, 14 RSC MINING (PTY) LTD, RSC MINING (PTY) LTD
8,801,337 Method of using a dome headed roof bolt Mar 20, 13 Aug 12, 14 DSI UNDERGROUND SYSTEMS, INC., DSI UNDERGROUND SYSTEMS, INC.
8,801,338 Nested mine roof supports Nov 26, 12 Aug 12, 14 MICON, MICON
8,795,777 Mine shaft liner plate system and method Feb 28, 12 Aug 05, 14 CONTECH ENGINEERED SOLUTIONS LLC, CONTECH ENGINEERED SOLUTIONS LLC

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Recent Publications

Not Available
Publication #TitleFiling DatePub DatePatent Owner
2014/0238,715 ROOF BOLTING CABLE BOLT FEEDING DEVICE May 06, 14 Aug 28, 14 , JOY MM DELAWARE, INC.
2014/0231,398 HIGH POWER LASER TUNNELING MINING AND CONSTRUCTION EQUIPMENT AND METHODS OF USE Dec 23, 13 Aug 21, 14 , FORO ENERGY, INC.
2014/0232,167 DEVICE FOR MONITORING THE STATE OF ROTATION OF A DISK CUTTER ARRANGEMENT OF A SHIELD TUNNEL BORING MACHINE AND DISK CUTTER ARRANGEMENT FOR A SHIELD TUNNEL BORING MACHINE Sep 14, 12 Aug 21, 14 , HERRENKNECHT AG
2014/0227,042 CONSTANT-RESISTANCE AND LARGE DEFORMATION ANCHOR CABLE AND CONSTANT-RESISTANCE DEVICE Jun 13, 11 Aug 14, 14 CHINA UNIVERSITY OF MINING AND TECHNOLOGY,
2014/0227,043 APPARATUS AND METHOD FOR INSTALLING GROUND ANCHORING SYSTEMS Apr 22, 14 Aug 14, 14 ,
2014/0217,805 DRILL BIT EXCHANGE DEVICE FOR SHIELD TUNNELING MACHINE Aug 23, 12 Aug 07, 14 HITACHI ZOSEN CORPORATION,
2014/0219,725 TUNNELING APPARATUS May 31, 12 Aug 07, 14 VERMEER MANUFACTURING COMPANY,

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