EP 0873464 A1 19981028 - IMPROVEMENTS RELATING TO TUNNEL-BORING MACHINES
Title (en)
IMPROVEMENTS RELATING TO TUNNEL-BORING MACHINES
Title (de)
VERBESSERUNGEN IN BEZUG AUF TUNNELVORTRIEBMASCHINEN
Title (fr)
PERFECTIONNEMENTS RELATIFS AUX TUNNELIERS
Publication
Application
Priority
- GB 9700078 W 19970113
- GB 9600695 A 19960113
Abstract (en)
[origin: GB2309043A] A cutter head assembly for a tunnel-boring machine includes a generally flat rotary cutter head (10) and one or more cutter discs (17) mounted via rotary bearings (15) upon respective cantilevered shafts (12). Each bearing (15) has an inner race (14) supported upon the shaft (12) and an outer raceway (18) formed integral with the cutter disc (17).
IPC 1-7
IPC 8 full level
E21B 10/22 (2006.01); E21D 9/10 (2006.01)
CPC (source: EP)
E21B 10/22 (2013.01); E21D 9/104 (2013.01); F16C 19/386 (2013.01); F16C 33/581 (2013.01); F16C 2352/00 (2013.01)
Citation (search report)
See references of WO 9725514A1
Designated contracting state (EPC)
AT DE FR IT SE
DOCDB simple family (publication)
GB 2309043 A 19970716; GB 2309043 B 19990623; GB 9600695 D0 19960313; AU 1391297 A 19970801; EP 0873464 A1 19981028; WO 9725514 A1 19970717
DOCDB simple family (application)
GB 9600695 A 19960113; AU 1391297 A 19970113; EP 97900327 A 19970113; GB 9700078 W 19970113