(19)

(11)

EP 0 814 879 A1

(12)

(43) Date of publication: 07.01.1998 Bulletin 1998/02 (21) Application number: 96908211.0 (22) Date of filing: 25.03.1996

(51) International Patent Classification (IPC):  F42B 6/ 00( . ) (86) International application number: PCT/GB1996/000715 (87) International publication number: WO 1996/030090 (03.10.1996 Gazette 1996/44)

(84) Designated Contracting States: BE DE FR NL (30) Priority: 24.03.1995 GB 19950005982 (71) Applicant: Unicorn Products Limited London SE23 1HJ (GB)	(72) Inventor: LOWY, Stanley, Robert London SE23 1HJ (GB) (74) Representative: Powell, Stephen David, et al  WILLIAMS, POWELL & ASSOCIATES 34 Tavistock Street London WC2E 7PB London WC2E 7PB (GB)