(19)
(11) EP 1 115 962 A1

(12)

(43) Date of publication:
18.07.2001 Bulletin 2001/29

(21) Application number: 99947669.0

(22) Date of filing: 24.09.1999
(51) International Patent Classification (IPC)7E21F 17/107, E21F 17/12
(86) International application number:
PCT/GB9903/195
(87) International publication number:
WO 0019/063 (06.04.2000 Gazette 2000/14)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 25.09.1998 GB 9820945
03.02.1999 GB 9902406

(71) Applicant: Thames Water Utilities Limited
Reading,Berkshire RG2 0JN (GB)

(72) Inventors:
  • SMITH, Alan, James
    Hemel Hempstead,Herts HP1 1QJ (GB)
  • WATERS, Colin, John
    WindleshamSurrey GU20 6JZ (GB)
  • MAY, Martin, John
    Iver, Buckinghamshire SL0 9LH (GB)
  • JEFFERIES,Steward ,Richard
    wooddorking Surrey RH5 4TL (GB)

(74) Representative: Johnson, Terence Leslie et al
Edward Evans & Co.,Clifford's Inn,Fetter Lane
London EC4A 1BX
London EC4A 1BX (GB)

   


(54) APPARATUS FOR CLOSING OFF AN UNDERGROUND PASSAGE