(19)

(11)

EP 0 755 550 A1

(12)

(43) Date of publication: 29.01.1997 Bulletin 1997/05 (21) Application number: 95913917.0 (22) Date of filing: 04.04.1995

(51) International Patent Classification (IPC):  G08B 15/ 00( . ) G08B 25/ 10( . ) G08B 13/ 22( . ) (86) International application number: PCT/GB1995/000778 (87) International publication number: WO 1995/027960 (19.10.1995 Gazette 1995/45)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 09.04.1994 GB 19940007082 11.10.1994 GB 19940020501 (71) Applicant: SEYMOUR, John Edward Birmingham B36 0DS (GB)	(72) Inventor: SEYMOUR, John Edward Birmingham B36 0DS (GB) (74) Representative: Harrison, Gordon Donald  FORRESTER & BOEHMERT Franz-Joseph-Strasse 38 80801 München 80801 München (DE)