(19)

(11)

EP 0 998 733 A1

(12)

(43) Date of publication: 10.05.2000 Bulletin 2000/19 (21) Application number: 98936549.9 (22) Date of filing: 30.07.1998

(51) International Patent Classification (IPC)7: G08B 13/08 (86) International application number: PCT/GB9802/282 (87) International publication number: WO 9906/975 (11.02.1999 Gazette 1999/06)

(84) Designated Contracting States: DE ES FR GB IT NL (30) Priority: 30.07.1997 GB 9716128 (71) Applicant: Bettacare Limited Faygate,West Sussex RH12 4DN (GB)	(72) Inventor: ELAM, John, Michael London SW9 6BT (GB) (74) Representative: Tollett, Ian et al Williams, Powell & Associates,4 St. Paul's Churchyard Inn London EC4M 8AY London EC4M 8AY (GB)