(19)

(11)

EP 1 101 210 A1

(12)

(43) Date of publication: 23.05.2001 Bulletin 2001/21 (21) Application number: 99937808.6 (22) Date of filing: 02.08.1999

(51) International Patent Classification (IPC)7: G08B 17/107, G01N 21/53 (86) International application number: PCT/ZA9900/059 (87) International publication number: WO 0007/161 (10.02.2000 Gazette 2000/06)

(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: 31.07.1998 ZA 9806865 (71) Applicant: Runciman, Dunstan Walter 7945 Zeekoeivlei (ZA)	(72) Inventor: Runciman, Dunstan Walter 7945 Zeekoeivlei (ZA) (74) Representative: Barlow, Roy James et al J.A. KEMP & CO.14, South SquareGray's Inn London WC1R 5LX London WC1R 5LX (GB)