ClassID:

135972

E21D9/004 - CPC Classification

Classification description:

Tunnels or galleries, with or without linings; Methods or apparatus for making thereof ; Layout of tunnels or galleries; Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines using light beams for direction or position control

Recent Application in this class:
#1
20250231026
2025-07-17

METHODS FOR REAL-TIME DEVIATION MONITORING OF MINIATURE PIPE ROOFING JACKING PIPE OF SPIRAL SOIL-DISCHARGING

#2
20210017859
2021-01-21

Machine guidance integration

#3
20200191965
2020-06-18

Lidar-based convergence deformation monitoring system for surrounding rock around TBM shield region

#4
20190369255
2019-12-05

Methods and systems for controlling the heading of a mining machine

#5
20170306757
2017-10-26

Shield-carried noncontact frequency-domain electrical real-time advanced detection system and method

#6
20170234129
2017-08-17

System and method for real-time guidance and mapping of a tunnel boring machine and tunnel

#7
20160333691
2016-11-17

Mine vehicle and method of initiating mine work task

#8
20160333690
2016-11-17

Mine control system

#9
20140219725
2014-08-07

Tunneling apparatus

#10
20130200680
2013-08-08

Excavation system using a water jet, and excavation method using the same

#11
20110266062
2011-11-03

Latching configuration for a microtunneling apparatus

#12
20100230171
2010-09-16

Drill head for a tunneling apparatus

#13
20100206637
2010-08-19

Cutting Unit for a Tunneling Apparatus

#14
20100206636
2010-08-19

Backreamer for a tunneling apparatus

#15
20100206635
2010-08-19

Tunneling apparatus including vacuum and method of use

#16
20100086359
2010-04-08

Method of directing drilling pattern in curved tunnels, rock drilling rig, and software product

#17
20080230270
2008-09-25

Arrangement for Positioning Rock Drilling Rig on Drilling Site

#18
20080099248
2008-05-01

Bore head for microbore operation

#19
20070089906
2007-04-26

Boring machine