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
9631433 Method and apparatus for introducing or sinking cavities in rock Mar 15, 13 Apr 25, 17 , Not available
9631491 Apparatus for forming an underground tunnel Dec 17, 08 Apr 25, 17 MORGAN, LEITH NORMA, Not available

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Recent Publications

Not Available
Publication #TitleFiling DatePub DatePatent Owner
2017/0138,194 METHOD FOR REMOVING HYDRAULIC SUPPORT FOR SOLID FILLING COAL MINING May 13, 15 May 18, 17 , Not available
2017/0130,579 CUTTER DISC WITH SET BACK TEETH FOR TUNNEL BORING MACHINE Oct 28, 16 May 11, 17 ROBBINS COMPANY, THE,
2017/0130,580 TELESCOPIC MINE ROOF SUPPORT Jul 21, 16 May 11, 17 ,
2017/0122,103 HIGH-PRECISION SENSORS FOR DETECTING A MECHANICAL LOAD OF A MINING TOOL OF A TUNNEL BORING MACHINE Apr 02, 15 May 04, 17 MONTANUNIVERSIT√ĄT LEOBEN,
2017/0122,104 CLAMPED-RING CUTTER ASSEMBLY FOR TUNNEL BORING MACHINE Oct 27, 16 May 04, 17 The Robbins Companry,
2017/0122,105 CUTTER ASSEMBLY WITH INLINE MOUNTING Oct 27, 16 May 04, 17 ROBBINS COMPANY, THE,
2017/0114,638 MOUNTING ASSEMBLY FOR A CROSS-BAR OF AUTOMATED TEMPORARY ROOF SUPPORT Oct 26, 15 Apr 27, 17 CATERPILLAR GLOBAL MINING AMERICA LLC,

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Patents Issued To Date - By Filing Year

Average Time to Issuance

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