E21D9/115 - CPC Classification Index

ClassID:

136019 ⎘

E21D9/115 - 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 by means of one single rotary head or of concentric rotary heads with cutting tools mounted pivotably or slidable on the head

Recent Application in this class:

20240240562

2024-07-18

METHOD, ARRANGEMENT AND MACHINE FOR FULL FACE REAMING

20220145757

2022-05-12

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

20120248848

2012-10-04

Cutting device with function of changing diameter in small range for soft rock shield machine

20050077775

2005-04-14

Shield tunneling machine