(19)

(11)

EP 0 809 658 A1

(12)

(43) Date of publication: 03.12.1997 Bulletin 1997/49 (21) Application number: 96901928.0 (22) Date of filing: 09.02.1996

(51) International Patent Classification (IPC):  A62B 17/ 00( . ) A62D 5/ 00( . ) C08B 37/ 16( . ) A41D 31/ 00( . ) B01D 39/ 16( . ) C08L 21/ 00( . ) (86) International application number: PCT/GB1996/000287 (87) International publication number: WO 1996/025438 (22.08.1996 Gazette 1996/38)

(84) Designated Contracting States: BE CH DE ES FR GB IE IT LI NL SE (30) Priority: 16.02.1995 GB 19950003057 (71) Applicant: THE SECRETARY OF STATE FOR DEFENCE London SW1A 2HB (GB)

(72) Inventors: BROWN, Richard, Talbot Oxford Road Manchester M13 9PL (GB) JAMESON, Simon, Brent Oxford Road Manchester M13 9PL (GB) RAHMAN, Habizur Oxford Road Manchester M13 9PL (GB) WILLIAMS, Charles, Francis Colchester Essex CO2 7SS (GB) (74) Representative: Skelton, Stephen Richard (GB), et al  D/IPR (DERA) Formalities Poplar 2a MOD (PE) Abbey Wood #19 P.O. Box 702 Bristol BS12 7DU Bristol BS12 7DU (GB)