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
9,085,977 Rib for supporting and reinforcing an excavation Jan 31, 11 Jul 21, 15 ELAS GEOTECNICA S.R.L., ELAS GEOTECNICA S.R.L.
9,080,444 Method and system of coal mine roof stabilization Dec 31, 10 Jul 14, 15 REI, INC., REI, INC.
9,074,338 Manhole liner and method of using the same Jul 29, 14 Jul 07, 15 LMK TECHNOLOGIES, LLC, LMK TECHNOLOGIES, LLC
9,067,772 Lawnmower jack device assisted by an outboard mounted cylinder Apr 06, 10 Jun 30, 15 FRANCE HAYON DEVELOPPEMENT, FRANCE HAYON DEVELOPPEMENT
9,068,452 Coal caving cycle Mar 19, 12 Jun 30, 15 YANCOAL TECHNOLOGY DEVELOPMENT PTY LTD, YANCOAL TECHNOLOGY DEVELOPMENT PTY LTD

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Recent Publications

Not Available
Publication #TitleFiling DatePub DatePatent Owner
2015/0204,042 Ground Stabilisation System, A Support and a Method of Stabilising Ground Jul 22, 13 Jul 23, 15 GEOINNOVATIONS LIMITED,
2015/0204,152 METHOD FOR DRILLING HOLES IN SOIL OR ROCK MATERIAL AND FOR FIXING AN ANCHOR IN A BOREHOLE AND APPARATUS THEREFOR Apr 03, 13 Jul 23, 15 DYWIDAG-SYSTEMS INTERNATIONAL GMBH,
2015/0204,192 MINE ROOF SUPPORT Jul 22, 13 Jul 23, 15 ,
2015/0197,895 STEPWISE REPEATED DESTABILIZATION AND STABILIZATION OF HIGHLY COLLAPSIBLE SOIL MASS BY 'SOIL NAILING TECHNIQUE' USED FOR CONSTRUCTION OF RAILWAY/ROAD UNDERPASS Jul 17, 13 Jul 16, 15 COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH,
2015/0198,041 METHOD OF APPLYING A THIN SPRAY-ON LINER AND ROBOTIC APPLICATOR THEREFOR Mar 27, 15 Jul 16, 15 ABB INC.,
2015/0198,042 Expandable Bolt with Shielded Tip Jan 30, 15 Jul 16, 15 FCI HOLDINGS DELAWARE, INC.,
2015/0192,013 TRUSS SYSTEM INSTALLATION Jan 07, 15 Jul 09, 15 DSI SYSTEMS UNDERGROUND, INC.,
2015/0192,014 TUNNEL SEGMENT CROSS GASKET Jan 08, 15 Jul 09, 15 CSI TUNNEL SYSTEMS,
2015/0192,015 TUBULAR ROCK ANCHOR Feb 04, 15 Jul 09, 15 GIDDICCA (PTY) LTD,
2015/0192,016 TRUSS EYE Jan 07, 15 Jul 09, 15 DSI SYSTEMS UNDERGROUND, INC.,
2015/0184,512 TELESCOPIC MINE ROOF SUPPORT Mar 16, 15 Jul 02, 15 BURRELL MINING PRODUCTS, INC.,

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Patents Issued To Date - By Filing Year

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