(19)

(11)

EP 0 473 751 A1

(12)

(43) Date of publication: 11.03.1992 Bulletin 1992/11 (21) Application number: 91905812.0 (22) Date of filing: 20.03.1991

(51) International Patent Classification (IPC):  B29C 70/ 34( . ) B29C 70/ 46( . ) B29C 43/ 12( . ) B29C 70/ 44( . ) B29D 99/ 00( . ) (86) International application number: PCT/GB1991/000426 (87) International publication number: WO 1991/014565 (03.10.1991 Gazette 1991/23)

(84) Designated Contracting States: DE ES FR IT NL SE (30) Priority: 21.03.1990 GB 19900006358 (71) Applicant: SHORT BROTHERS PLC Belfast BT3 9DZ, Northern Ireland (GB)	(72) Inventors: WILSON, Robert, Samuel Belfast BT4 3DY (GB) SIMPSON, Derek, James Holywood, Co Down BT18 0NJ (GB) (74) Representative: Moon, Donald Keith, et al  BREWER & SON Quality House Quality Court Chancery Lane London WC2A 1HT London WC2A 1HT (GB)