(19)

(11)

EP 1 053 373 A1

(12)

(43) Date of publication: 22.11.2000 Bulletin 2000/47 (21) Application number: 99970705.2 (22) Date of filing: 15.10.1999

(51) International Patent Classification (IPC)7: E04B 1/72, A01M 1/24 (86) International application number: PCT/AU9900/895 (87) International publication number: WO 0023/667 (27.04.2000 Gazette 2000/17)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 16.10.1998 AU 8931798 (71) Applicants: O'Brien, Vincent William Maroubra, NSW 2035 (AU) Elias, Stephen Paul West Ryde, NSW 2114 (AU)	(72) Inventors: O'Brien, Vincent William Maroubra, NSW 2035 (AU) Elias, Stephen Paul West Ryde, NSW 2114 (AU) (74) Representative: Haley, Stephen  Gill Jennings & Every,Broadgate House,7 Eldon Street London EC2M 7LH London EC2M 7LH (GB)