(19)
(11) EP 0 873 464 A1

(12)

(43) Date of publication:
28.10.1998 Bulletin 1998/44

(21) Application number: 97900327.0

(22) Date of filing: 13.01.1997
(51) International Patent Classification (IPC): 
E21B 10/ 22( . )
E21D 9/ 10( . )
(86) International application number:
PCT/GB1997/000078
(87) International publication number:
WO 1997/025514 (17.07.1997 Gazette 1997/31)
(84) Designated Contracting States:
AT DE FR IT SE

(30) Priority: 13.01.1996 GB 19960000695

(71) Applicants:
  • Andaray Engineering Limited
    Gateshead, Tyne & Wear NE10 0QE (GB)
  • EURO ISEKI LIMITED
    Stratford-upon-Avon, Warwickshire CV37 9LQ (GB)

(72) Inventors:
  • EGERTON, Charles, William
    Berwick-upon-Tweed TD15 1HB (GB)
  • ROOKE, Alan
    Solihull, Warwickshire B95 5ED (GB)

(74) Representative: Vinsome, Rex Martin, et al 
Urquhart-Dykes & Lord St Nicholas Chambers Amen Corner
Newcastle-Upon-Tyne NE1 1PE
Newcastle-Upon-Tyne NE1 1PE (GB)

   


(54) IMPROVEMENTS RELATING TO TUNNEL-BORING MACHINES