(19)

(11)

EP 1 423 573 A1

(12)

(43) Date of publication: 02.06.2004 Bulletin 2004/23 (21) Application number: 02765011.8 (22) Date of filing: 03.09.2002

(51) International Patent Classification (IPC)7: E03D 1/01 (86) International application number: PCT/GB2002/004026 (87) International publication number: WO 2003/021051 (13.03.2003 Gazette 2003/11)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 03.09.2001 GB 0121322 (71) Applicant: THOMAS DUDLEY LIMITED Dudley DY1 4SN (GB)	(72) Inventor: DUDLEY, Martin, John Halesowen,West Midlands B63 1HB (GB) (74) Representative: Jones, John Bryn et al Withers & Rogers,Goldings House,2 Hays Lane London SE1 2HW London SE1 2HW (GB)