(19)

(11)

EP 0 917 696 A1

(12)

(43) Date of publication: 26.05.1999 Bulletin 1999/21 (21) Application number: 97931911.0 (22) Date of filing: 11.07.1997

(51) International Patent Classification (IPC):  G08B 21/ 06( . ) (86) International application number: PCT/GB1997/001888 (87) International publication number: WO 1998/006077 (12.02.1998 Gazette 1998/06)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 07.08.1996 GB 19960016585 09.09.1996 GB 19960018791 03.10.1996 GB 19960020601 (71) Applicant: Booree, Jean-Marie-Pierre Kirby Muxloe, Leicester LE 9 2AP (GB)	(72) Inventor: Booree, Jean-Marie-Pierre Kirby Muxloe, Leicester LE 9 2AP (GB) (74) Representative: Lucas, Brian Ronald  Lucas & Co. 135 Westhall Road Warlingham Surrey CR6 9HJ Warlingham Surrey CR6 9HJ (GB)