E21D9/11 - CPC Classification Index

ClassID:

136015 ⎘

E21D9/11 - 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 boring or cutting machines with a rotary drilling-head cutting simultaneously the whole cross-section, i.e. full-face machines

Sub-classes:

E21D9/111 » {by means of heads or tool-carrying sectors implementing an oscillating rotary motion} 1
E21D9/112 » {by means of one single rotary head or of concentric rotary heads } 45
E21D9/116 » {by means of non-concentric rotary heads } 5

Recent Application in this class:

20260139591

RETRACTABLE TUNNEL BORING SYSTEM

20240200449

Tunnel excavation device

20240159148

TUNNEL EXCAVATION APPARATUS AND METHOD FOR TBM EXCAVATION AND EXPANDED BLASTING

20230194386

TBM TUNNELING TEST BENCH FOR MICROWAVE-ASSISTED ROTARY ROCK BREAKING

20230175396

Control method for tunnel excavation device and tunnel excavation device

20230147209

Drill head and method for producing a vertical borehole in the ground

20220074306

Excavation tool replacement device and tunnel boring machine

20210032991

Device and method for continuously driving a tunnel

20200011176

Vibration and strain monitoring method for key positions of tunnel boring machine

20190112924

Tunnel boring machine

20180298755

Ripping and scraping cutter tool assemblies, systems, and methods for a tunnel boring machine

20180258765

Tunnel boring machine

20180171793

Cutter assembly with rolling elements and method of disassembling

20180073362

Tunnel boring machine

20170298730

Cutting apparatus

20170122103

High-precision sensors for detecting a mechanical load of a mining tool of a tunnel boring machine

20160230552

Tunnel boring device, and control method therefor

20160032724

Ripping and scraping cutter tool assemblies, systems, and methods for a tunnel boring machine

20140339881

Cutter Insert Gum Modification Method And Appratus

20090322143

CUTTER INSERT GUM MODIFICATION METHOD AND APPARATUS

20070085409

Method and means for processing oil sands while excavating

20050093361

Method and means for processing oil sands while excavating