(19)

(11)

EP 1 163 063 A1

(12)

(43) Date of publication: 19.12.2001 Bulletin 2001/51 (21) Application number: 00904691.3 (22) Date of filing: 28.01.2000

(51) International Patent Classification (IPC)7: B21C 37/00, C21D 1/18, C21D 9/00, C21D 9/08, C22C 38/18, E06B 9/01 (86) International application number: PCT/AU0000/048 (87) International publication number: WO 0044/511 (03.08.2000 Gazette 2000/31)

(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: 28.01.1999 AU PP836199 30.06.1999 AU PQ130199 02.08.1999 AU PQ193099 (71) Applicant: AG Security Pty. Limited Sydney, NSW 2000 (AU)	(72) Inventors: WINTERBURN, Gary, Brian Doolandella, QLD 4077 (AU) HORSFALL, Wade, Patrick Caboolture, QLD 4510 (AU) (74) Representative: Holme, Edvard  Holme Patent A/S, Vesterbrogade 20 1620 Copenhagen V. 1620 Copenhagen V. (DK)