(19)

(11)

EP 0 560 862 A1

(12)

(43) Date of publication: 22.09.1993 Bulletin 1993/38 (21) Application number: 92900712.0 (22) Date of filing: 16.12.1991

(51) International Patent Classification (IPC):  B67D 1/ 02( . ) B67D 1/ 14( . ) (86) International application number: PCT/GB1991/002238 (87) International publication number: WO 1992/010424 (25.06.1992 Gazette 1992/14)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU NL SE (30) Priority: 14.12.1990 GB 19900027176 (71) Applicant: A.G. (PATENTS) LIMITED London, W1N 4BB (GB)	(72) Inventor: SMITH, Trevor George Norwich, Norfolk NR6 7LD (GB) (74) Representative: Davies, Christopher Robert  Frank B. Dehn & Co. Imperial House 15-19 Kingsway London WC2B 6UZ London WC2B 6UZ (GB)