(19)

(11)

EP 0 256 002 A1

(12)

(43) Date of publication: 24.02.1988 Bulletin 1988/08 (21) Application number: 86901201.0 (22) Date of filing: 28.01.1986

(51) International Patent Classification (IPC):  B22D 27/ 04( . ) (86) International application number: PCT/US1986/000166 (87) International publication number: WO 1987/004376 (30.07.1987 Gazette 1987/17)

(84) Designated Contracting States: BE DE FR GB IT SE (71) Applicant: TRW INC. Lyndhurst Ohio 44124 (US)	(72) Inventors: GRAHAM, Lawrence, D. Chagrin Falls, OH 44022 (US) SKELLEY, Richard, A. Minerva, OH 44657 (US) FETSKO, Daniel, George Lyndhurst, OH 44124 (US) ARDO, Ronald Euclid, OH 44123 (US) (74) Representative: Jenkins, Richard Gray, et al  R.G.C. Jenkins & Co. 26 Caxton Street London SW1H 0RJ London SW1H 0RJ (GB)