(19)

(11)

EP 1 029 316 A1

(12)

(43) Date of publication: 23.08.2000 Bulletin 2000/34 (21) Application number: 98905159.4 (22) Date of filing: 05.03.1998

(51) International Patent Classification (IPC)7: G08B 21/00, G08B 25/00 (86) International application number: PCT/AU9800/140 (87) International publication number: WO 9839/752 (11.09.1998 Gazette 1998/36)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 05.03.1997 AU 1507697 (71) Applicant: Phillbrook, Justin James Crows Nest, NSW 2065 (AU)	(72) Inventor: Phillbrook, Justin James Crows Nest, NSW 2065 (AU) (74) Representative: Wharton, Peter Robert et al Urquhart-Dykes & LordTower HouseMerrion Way Leeds LS2 8PA Leeds LS2 8PA (GB)