(19)

(11)

EP 1 368 608 A1

(12)

(43) Date of publication: 10.12.2003 Bulletin 2003/50 (21) Application number: 02708455.7 (22) Date of filing: 13.03.2002

(51) International Patent Classification (IPC)7: F41A 9/64, F42B 33/02, F42B 33/04, F42B 12/34, F42B 14/00, F42B 14/02 (86) International application number: PCT/GB0201/017 (87) International publication number: WO 0207/3115 (19.09.2002 Gazette 2002/38)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 13.03.2001 GB 0106132 10.07.2001 GB 0116789 (71) Applicant: Bunney, Robert Frederick Ampthill,Bedfordshire MK45 25N (GB)	(72) Inventor: Bunney, Robert Frederick Ampthill,Bedfordshire MK45 25N (GB) (74) Representative: Burrows, Anthony Gregory  Business Centre WestAvenue One, Business Park Letchworth Garden CityHertfordshire SG6 2HB Letchworth Garden CityHertfordshire SG6 2HB (GB)