(19)

(11)

EP 0 568 570 A1

(12)

(43) Date of publication: 10.11.1993 Bulletin 1993/45 (21) Application number: 92903225.0 (22) Date of filing: 21.01.1992

(51) International Patent Classification (IPC):  B32B 5/ 18( . ) F02C 7/ 045( . ) G10K 11/ 168( . ) B32B 5/ 22( . ) G10K 11/ 16( . ) (86) International application number: PCT/GB1992/000121 (87) International publication number: WO 1992/013339 (06.08.1992 Gazette 1992/21)

(84) Designated Contracting States: CH DE ES FR IT LI NL SE (30) Priority: 22.01.1991 GB 19910001353 (71) Applicant: SHORT BROTHERS PLC Belfast BT3 9DZ, Northern Ireland (GB)	(72) Inventor: WILSON, Robert, Samuel Belfast BT4 3DY (GB) (74) Representative: Moon, Donald Keith  BREWER & SON, Quality House, Quality Court, Chancery Lane London WC2A 1HT London WC2A 1HT (GB)