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
8,821,068 Manhole liner and method of using the same Jul 12, 10 Sep 02, 14 LMK TECHNOLOGIES, LLC, LMK TECHNOLOGIES, LLC
8,821,075 Yieldable support prop and method Oct 26, 11 Sep 02, 14 STRATA PRODUCTS WORLDWIDE, LLC, STRATA PRODUCTS WORLDWIDE, LLC
8,814,472 Tunnel excavation apparatus and tunnel excavation method Nov 21, 12 Aug 26, 14 KABUKI CONSTRUCTION CO., LTD., 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 MALMFALTEN AB, 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

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Recent Publications

Not Available
Publication #TitleFiling DatePub DatePatent Owner
2014/0252,843 TUNNEL BORING MACHINE DISC CUTTERS AND RELATED METHODS OF MANUFACTURE Mar 08, 13 Sep 11, 14 US SYNTHETIC CORPORATION,
2014/0248,093 SHORING BOX SYSTEM AND METHOD Oct 18, 12 Sep 04, 14 ,
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,

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