(19)

(11)

EP 1 641 982 A1

(12)

(43) Date of publication: 05.04.2006 Bulletin 2006/14 (21) Application number: 04748822.6 (22) Date of filing: 18.06.2004

(51) International Patent Classification (IPC):  E02D 29/14(1968.09) (86) International application number: PCT/NZ2004/000127 (87) International publication number: WO 2004/111352 (23.12.2004 Gazette 2004/52)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 18.06.2003 NZ 52657203 (71) Applicant: Rhodes, Derrick Anthony Grey Lynn, Auckland (NZ)	(72) Inventor: Rhodes, Derrick Anthony Grey Lynn, Auckland (NZ) (74) Representative: Cornish, Kristina Victoria Joy  Kilburn & Strode, 20 Red Lion Street London WC1R 4PJ London WC1R 4PJ (GB)