(19)

(11)

EP 1 007 808 A1

(12)

(43) Date of publication: 14.06.2000 Bulletin 2000/24 (21) Application number: 98939422.6 (22) Date of filing: 21.08.1998

(51) International Patent Classification (IPC)7: E04D 3/36, E04B 1/343 (86) International application number: PCT/AU9800/674 (87) International publication number: WO 9910/609 (04.03.1999 Gazette 1999/09)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 21.08.1997 AU PO869897 06.08.1998 AU PP508998 (71) Applicant: MCK Groups Limited Avondale,Auckland (NZ)	(72) Inventor: Dowling, Jonathan Stawell, Vic 3380 (AU) (74) Representative: Guerre, Dominique et al Cabinet Germain et Maureau,12, rue Boileau,BP 6153 69466 Lyon Cedex 06 69466 Lyon Cedex 06 (FR)