(19)

(11)

EP 1 869 268 A1

(12)

(43) Date of publication: 26.12.2007 Bulletin 2007/52 (21) Application number: 06721326.4 (22) Date of filing: 04.04.2006

(51) International Patent Classification (IPC):  E04F 11/18(2006.01) (86) International application number: PCT/AU2006/000444 (87) International publication number: WO 2006/105591 (12.10.2006 Gazette 2006/41)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 04.04.2005 AU 2005901633 05.10.2005 AU 2005905492 (71) Applicant: Napier, Donald Stewart Victoria 3127 (AU)	(72) Inventor: Napier, Donald Stewart Victoria 3127 (AU) (74) Representative: Browne, Robin Forsythe et al Leaman Browne 5 South Parade Leeds, LS1 5QX Leeds, LS1 5QX (GB)