(19)

(11)

EP 1 027 691 A1

(12)

(43) Date of publication: 16.08.2000 Bulletin 2000/33 (21) Application number: 99932408.0 (22) Date of filing: 11.06.1999

(51) International Patent Classification (IPC)7: G08B 13/14, G08B 21/00, G08B 23/00 (86) International application number: PCT/ZA9900/044 (87) International publication number: WO 9965/004 (16.12.1999 Gazette 1999/50)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE Designated Extension States: RO (30) Priority: 11.06.1998 ZA 9805058 (71) Applicant: Mushroom Biomedical Systems (Proprietary) Limited Vygeboom,Durbanville 7550 (ZA)	(72) Inventors: FOURIE, Pieter, Rousseau Vygeboom,Durbanville 7550 (ZA) WESSELS, Jacobus, Adriaan Loevenstein,Bellville 7530 (ZA) (74) Representative: Votier, Sidney David  CARPMAELS & RANSFORD43, Bloomsbury Square London WC1A 2RA London WC1A 2RA (GB)