EP 1333153 B1 20060503 - Expanding device in a cutting tool for a tunnel boring machine
Title (en)
Expanding device in a cutting tool for a tunnel boring machine
Title (de)
Kaliberaufweitungsschneidwerkzeug für Tunnelbohrmaschinen
Title (fr)
Dispositif d'expansion dans un outil de coupe pour une machine de forage de tunnels
Publication
Application
Priority
EP 02002618 A 20020205
Abstract (en)
[origin: EP1333153A1] The cutting ring (201) can be moved along the roll hub (200) in the axial direction. An Independent claim is also included for a method for increasing the diameter of a tunnel using a tunnel boring machine with its drill bit modified to take the above cutting roll (20), in which the drill bit is first of all fitted with a first cutting roll to increase tunnel diameter to a first size and then fitted with a second cutting roll to increase tunnel diameter to a second size.
IPC 8 full level
E21D 9/10 (2006.01)
CPC (source: EP)
E21D 9/104 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1333153 A1 20030806; EP 1333153 B1 20060503; AT E325257 T1 20060615; DE 50206647 D1 20060608
DOCDB simple family (application)
EP 02002618 A 20020205; AT 02002618 T 20020205; DE 50206647 T 20020205