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
9677399 Yieldable rock anchor Jul 12, 13 Jun 13, 17 , Minova International Limited
9670776 Stabilization system for a mining machine Feb 24, 15 Jun 06, 17 JOY MM DELAWARE, INC., Joy MM Delaware, Inc.
9670777 Longwall mining roof supports Nov 22, 13 Jun 06, 17 JOY MM DELAWARE, INC., Joy MM Delaware, Inc.
9664041 Drill rig Dec 12, 13 May 30, 17 CATERPILLAR GLOBAL MINING EXPANDED PRODUCTS PTY LTD, Caterpillar Global Mining Expanded Products Pty Ltd
9664042 Anchor, especially a rock anchor Oct 17, 12 May 30, 17 HILTI AKTIENGESELLSCHAFT, Hilti Aktiengesellschaft

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Recent Publications

Not Available
Publication #TitleFiling DatePub DatePatent Owner
2017/0175,527 Method for Producing a Construction Element, in Particular a Tunnel Element, Having a Watertight Seal May 01, 15 Jun 22, 17 , Not available
2017/0167,261 CONSTRUCTION ELEMENT FOR CREATING A TUNNEL, TUNNEL COMPRISING SUCH AN ELEMENT AND METHODS FOR CONSTRUCTING SUCH AN ELEMENT AND SUCH A TUNNEL May 20, 15 Jun 15, 17 , CONSTRUCTIONS MÉCANIQUES CONSULTANTS
2017/0159,431 LONGWALL OPTIMINZATION CONTROL Dec 02, 15 Jun 08, 17 JOY MM DELAWARE, INC.,
2017/0159,433 VENTILATED MINE ROOF SUPPORT Feb 17, 17 Jun 08, 17 BURRELL MINING PRODUCTS, INC.,
2017/0159,434 METHOD AND ARRANGMENT FOR MOUNTING BOLTS IN A TUNNEL WALL Jul 01, 15 Jun 08, 17 SKANSKA SVERIGE AB,
2017/0159,436 SPRAY NOZZLE FOR UNDERGROUND ROOF SUPPORT Dec 02, 16 Jun 08, 17 JOY MM DELAWARE, INC.,
2017/0152,745 TUNNEL SUPPORT INSTALLATION APPARATUS Jun 16, 15 Jun 01, 17 SANDVIK INTELLECTUAL PROPERTY AB,
2017/0152,746 Advancing Ram Pin Retention Device Feb 10, 17 Jun 01, 17 JOY MM DELAWARE, INC.,
2017/0145,824 REINFORCEMENT BAR May 20, 16 May 25, 17 SHEHKAI PRECISION CO., LTD.,

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Patents Issued To Date - By Filing Year

Average Time to Issuance

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