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(11)

EP 0 172 806 A1

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(43) Date of publication: 05.03.1986 Bulletin 1986/10 (21) Application number: 84900774.0 (22) Date of filing: 06.01.1984

(51) International Patent Classification (IPC):  C23C 22/ 12( . ) C23C 22/ 36( . ) C23C 22/ 18( . ) (86) International application number: PCT/US1984/000011 (87) International publication number: WO 1985/003089 (18.07.1985 Gazette 1985/16)

(84) Designated Contracting States: BE CH DE FR GB LI LU SE (71) Applicants: Ford Motor Company Dearborn, MI 48121 (US) FORD MOTOR COMPANY LIMITED Brentwood, Essex CM13 3BW (GB) FORD-WERKE AKTIENGESELLSCHAFT D-50725 Köln (DE) FORD FRANCE SOCIETE ANONYME F-92506 Rueil Malmaison Cedex (FR)	(72) Inventors: ZURILLA, Ronald, W. Farmington Hills, MI 48018 (US) HUFF, John Detroit, MI 48221 (US) (74) Representative: TER MEER - MÜLLER - STEINMEISTER & PARTNER  Mauerkircherstrasse 45 D-81679 München D-81679 München (DE)