E21D9/124 - CPC Classification Index

ClassID:

136025 ⎘

E21D9/124 - CPC Classification

Classification description:

Tunnels or galleries, with or without linings; Methods or apparatus for making thereof ; Layout of tunnels or galleries; Devices for removing or hauling away excavated material or spoil; Working or loading platforms Helical conveying means therefor

Recent Application in this class:

20240084701

2024-03-14

Centrifugal intelligent construction device for excavation concrete structure, and application thereof

20230417139

2023-12-28

Mechanical tunneling apparatus and process for tunnel in quicksand stratum

20170067339

2017-03-09

FOAM GENERATOR FOR AN EARTH PRESSURE BALANCE SHIELD TUNNEL BORING MACHINE AND METHOD FOR CONDITIONING REMOVED SOIL MATERIAL AS A SUPPORTING MEDIUM FOR AN EARTH PRESSURE BALANCE SHIELD

20150233243

2015-08-20

Method and device for transporting overburden away during tunnelling

20130076100

2013-03-28

Tunnel excavation apparatus and tunnel excavation method