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)

Subclasses

Not Available
Subclass Title
1/00 Sinking shafts
1/02 Sinking shafts by hand
1/03 Sinking shafts mechanically (E21D 1/08 takes precedence)
1/04 Sinking shafts mechanically (E21D 1/08 takes precedence) with grabs
1/06 Sinking shafts mechanically (E21D 1/08 takes precedence) with shaft-boring cutters (drilling machines E21B)

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Recent Patents

Not Available
Patent #TitleFiling DateIssue DatePatent Owner
8,985,699 Mining methods and equipment Mar 14, 13 Mar 24, 15 , SENECA INDUSTRIES INC.
8,985,700 Mining systems with guidance systems May 01, 14 Mar 24, 15 , SENECA INDUSTRIES INC.
8,985,907 Mountable earth-embedding anchor with removable underground conduit panels and installation apparatus Oct 15, 12 Mar 24, 15 , Not available
8,985,910 Adhesive containing tubular rock anchor Jun 07, 12 Mar 24, 15 , GIDDICCA (PTY) LTD
8,979,209 Stabilization system for a mining machine Aug 03, 12 Mar 17, 15 JOY MM DELAWARE, INC., JOY MM DELAWARE, INC.
8,979,434 Tubbing lining having an integrated flexible element Dec 01, 10 Mar 17, 15 BOCHUMER EISENHUTTE HEINTZMANN GMBH & CO. KG, BOCHUMER EISENHÜTTE HEINTZMANN GMBH & CO. KG
8,974,151 Constant-resistance large-deformation anchor rod Dec 10, 12 Mar 10, 15 BOCHUMER EISENHUTTE HEINTZMANN GMBH & CO. KG, Not available
8,967,593 Wheelset press Sep 12, 08 Mar 03, 15 MAE MASCHINEN-UND APPARATEBAU GOTZEN GMBH, MAE MASCHINEN-UND APPARATEBAU GOTZEN GMBH
8,967,916 Mine roof support apparatus and system May 07, 12 Mar 03, 15 EARTH SUPPORT SERVICES, INC., EARTH SUPPORT SERVICES, INC.

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Recent Publications

Not Available
Publication #TitleFiling DatePub DatePatent Owner
2015/0086,272 SELF-MOVING TUNNEL SUPPORT CANOPY Jun 26, 12 Mar 26, 15 , Not available
2015/0086,280 ROOF SUPPORT SHEET HANDLING FOR UNDERGROUND MINES Dec 03, 14 Mar 26, 15 , Not available
2015/0078,831 AUXILIARY TUNNELING APPARATUS Jun 11, 13 Mar 19, 15 KOMATSU LTD.,
2015/0069,814 FACE EQUIPMENT COMPRISING HOSE LEVELS PLACED ON THE SHIELD SUPPORT FRAMES OF SAID FACE EQUIPMENT Apr 02, 12 Mar 12, 15 RAG AKTIENGESELLSCHAFT,
2015/0069,815 TUNNEL EXCAVATION METHOD Jun 05, 13 Mar 12, 15 KOMATSU LTD.,
2015/0060,158 MULTI-PURPOSE MACHINE CHASSIS Aug 28, 13 Mar 05, 15 CATERPILLAR GLOBAL MINING AMERICA LLC,
2015/0061,352 FACE EQUIPMENT COMPRISING HOSE LEVELS PLACED BETWEEN THE FACE CONVEYOR AND THE SHIELD SUPPORT FRAMES Apr 02, 12 Mar 05, 15 RAG AKTIENGESELLSCHAFT,

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Patents Issued To Date - By Filing Year

Average Time to Issuance

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