(19)

(11)

EP 1 341 972 A1

(12)

(43) Date of publication: 10.09.2003 Bulletin 2003/37 (21) Application number: 01960944.5 (22) Date of filing: 23.08.2001

(51) International Patent Classification (IPC)7: E03C 1/242 (86) International application number: PCT/GB0103/805 (87) International publication number: WO 0201/8718 (07.03.2002 Gazette 2002/10)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 01.09.2000 GB 0021397 18.01.2001 GB 0101329 (71) Applicant: Laguna Engineering Limited London NW10 3JH (GB)	(72) Inventor: ROSE, Simon Leigh London NW10 3JH (GB) (74) Representative: Kemp, Paul Geoffrey  Brookes Batchellor102-108 Clerkenwell Road London EC1M 5SA London EC1M 5SA (GB)