ClassID:

135998

E21D9/087 - CPC Classification

Classification description:

Tunnels or galleries, with or without linings; Methods or apparatus for making thereof ; Layout of tunnels or galleries; Making by using a driving shield, i.e. advanced by pushing means bearing against the already placed lining with additional boring or cutting means other than the conventional cutting edge of the shield with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines

Recent Application in this class:
#1
20260125980
2026-05-07

STEERING CONTROL DEVICE OF SHIELD TBM AND STEERING CONTROL METHOD USING THE SAME

#2
20260028910
2026-01-29

SHIELD CUTTERHEAD FOR CUTTING DIAPHRAGM WALL WITH STEEL I-BEAM

#3
20240151142
2024-05-09

CUTTING WHEEL FOR A CUTTING BORING MACHINE

#4
20230417139
2023-12-28

Mechanical tunneling apparatus and process for tunnel in quicksand stratum

#5
20230258087
2023-08-17

Method for real-time strength estimation, grading, and early warning of rock mass in tunnel boring machine (TBM) tunneling

#6
20220145757
2022-05-12

Cutting tool for a tunnel boring machine and a tunnel boring machine

#7
20220074306
2022-03-10

Excavation tool replacement device and tunnel boring machine

#8
20210340870
2021-11-04

Automatic coal mining machine and fluidized coal mining method

#9
20210148230
2021-05-20

Tunnel boring machine

#10
20210003009
2021-01-07

Combined rock-breaking TBM tunneling method in complex strata for realizing three-way force detection

#11
20190032430
2019-01-31

Tunnel boring device and system for the hydraulic removal of cuttings, and system for producing a stable fluid pressure for a boring fluid in the region of a cutting disk of the tunnel boring device

#12
20190017380
2019-01-17

Laser-assisted tunnel boring machine and rock fragmenting method therefor

#13
20180073362
2018-03-15

Tunnel boring machine

#14
20160194957
2016-07-07

Compound-type tunneling shield

#15
20140357461
2014-12-04

Bit exchange method and bit exchange device for shield tunneling machine

#16
20140217805
2014-08-07

Drill bit exchange device for shield tunneling machine