with means for applying a coating layer to the front face

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E21D9/0664

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EFIXED CONSTRUCTIONS E21Mining E21DSHAFTS TUNNELS GALLERIES LARGE UNDERGROUND CHAMBERS E21D9/00Tunnels or galleries, with or without linings Methods or apparatus for making thereof Layout of tunnels or galleries

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E21D9/0664with means for applying a coating layer to the front face

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Patents Grantslast 30 patents

Information Patent Grant
Mechanical tunneling apparatus and process for tunnel in quicksand...
- Patent number 11,976,558
- Issue date May 7, 2024
- Shandong University
- Ke Wu
- E21 - EARTH DRILLING MINING
Information Patent Grant
Barrier forming apparatus
- Patent number 9,732,612
- Issue date Aug 15, 2017
- Glen Roy Maynard
- E21 - EARTH DRILLING MINING
Information Patent Grant
Treatment of rock surfaces
- Patent number 6,966,610
- Issue date Nov 22, 2005
- Minova International Limited
- Peter Shelley Mills
- E21 - EARTH DRILLING MINING
Information Patent Grant
Method for reducing compressed air losses when driving underground...
- Patent number 4,623,198
- Issue date Nov 18, 1986
- Ed. Zublin Aktiengesellschaft
- Manfred Nussbaumer
- E21 - EARTH DRILLING MINING
Information Patent Grant
Driving shield
- Patent number 4,368,924
- Issue date Jan 18, 1983
- Ed. Zublin Aktiengesellschaft
- Manfred Nussbaumer
- E21 - EARTH DRILLING MINING

Patents Applicationslast 30 patents

Information Patent Application
MECHANICAL TUNNELING APPARATUS AND PROCESS FOR TUNNEL IN QUICKSAND...
- Publication number 20230417139
- Publication date Dec 28, 2023
- SHANDONG UNIVERSITY
- Ke WU
- E21 - EARTH DRILLING MINING
Information Patent Application
BARRIER FORMING APPARATUS
- Publication number 20160208608
- Publication date Jul 21, 2016
- Glen Roy MAYNARD
- E21 - EARTH DRILLING MINING
Information Patent Application
Treatment of rock surfaces
- Publication number 20030011235
- Publication date Jan 16, 2003
- Peter Shelley Mills
- E21 - EARTH DRILLING MINING