(19)

(11)

EP 0 054 555 A1

(12)

(43) Date of publication: 30.06.1982 Bulletin 1982/26 (21) Application number: 81901384.0 (22) Date of filing: 23.06.1980

(51) International Patent Classification (IPC):  B64C 30/ 00( . ) F02C 9/ 44( . ) (86) International application number: PCT/US1980/000786 (87) International publication number: WO 1982/000048 (07.01.1982 Gazette 1982/01)

(84) Designated Contracting States: DE FR GB NL SE (71) Applicant: THE BOEING COMPANY Orgn. 6-1141, M/S 24-15 Seattle, WA 98124 (US)	(72) Inventor: BROWN, Robert B. Kent, WA 98031 (US) (74) Representative: Bruin, Cornelis Willem, et al  Arnold & Siedsma, Advocaten en Octrooigemachtigden, P.O. Box 18558 NL-2502 EN Den Haag NL-2502 EN Den Haag (NL)