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
9,255,476 Shaft construction in the earth and method thereof Aug 19, 13 Feb 09, 16 , RIC-MAN CONSTRUCTION, INC.
9,249,663 Impact resistant lagging, method for designing impact resistant lagging, and apparatus for testing impact resistant lagging Feb 26, 10 Feb 02, 16 FCI HOLDINGS DELAWARE, INC., FCI HOLDINGS DELAWARE, INC.
9,234,425 System and method for enabling machine movement Jun 12, 13 Jan 12, 16 CATERPILLAR GLOBAL MINING AMERICA LLC, CATERPILLAR GLOBAL MINING AMERICA, LLC

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Recent Publications

Not Available
Publication #TitleFiling DatePub DatePatent Owner
2016/0032,724 RIPPING AND SCRAPING CUTTER TOOL ASSEMBLIES, SYSTEMS, AND METHODS FOR A TUNNEL BORING MACHINE Jul 29, 14 Feb 04, 16 , Not available
2016/0024,922 ENSURING WORKING CONDITIONS ALONG A LONGWALL FACE Mar 11, 14 Jan 28, 16 CATERPILLAR GLOBAL MINING EUROPE GMBH,
2016/0025,608 DEVICE, SYSTEM AND METHOD FOR DYNAMIC TESTING OF GROUND SUPPORT BOLTS, ANCHOR BOLTS OR ROCK BOLTS Feb 05, 14 Jan 28, 16 SANDVIK INTELLECTUAL PROPERTY AB,
2016/0017,708 GUIDE RAIL ROPE DEFLECTION INHIBITION MECHANISM AND METHOD FOR PARALLEL SOFT CABLE SUSPENSION SYSTEM Jan 22, 14 Jan 21, 16 CHINA UNIVERSITY OF MINING AND TECHNOLOGY,
2016/0017,709 Anti-Friction Washer System Jul 14, 15 Jan 21, 16 FCI HOLDINGS DELAWARE, INC.,
2016/0010,456 METHOD FOR PRODUCING A TUBBING HAVING A THERMOPLASTIC SEALING LAYER Mar 06, 14 Jan 14, 16 SIKA TECHNOLOGY AG,

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Patents Issued To Date - By Filing Year

Average Time to Issuance

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