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(11)

EP 0 431 019 A1

(12)

(43) Date of publication: 12.06.1991 Bulletin 1991/24 (21) Application number: 89909656.0 (22) Date of filing: 28.07.1989

(51) International Patent Classification (IPC):  F01D 5/ 14( . ) B21J 5/ 02( . ) B21K 1/ 36( . ) B21K 25/ 00( . ) F01D 5/ 02( . ) B21J 5/ 00( . ) B21K 1/ 32( . ) B21K 3/ 04( . ) B23K 20/ 00( . ) (86) International application number: PCT/US1989/003292 (87) International publication number: WO 1990/002479 (22.03.1990 Gazette 1990/07)

(84) Designated Contracting States: AT BE CH DE FR IT LI LU NL SE (30) Priority: 29.07.1988 US 19880225907 10.07.1989 US 19890377925 (71) Applicant: WYMAN-GORDON COMPANY Worcester, MA 01610 (US)	(72) Inventors: HYZAK, John, M. Shrewsbury, MA 01545 (US) HOWSON, Thimoty, E. Westboro, MA 01581 (US) COUTS, Wilford, H., Jr. Northboro, MA 01532 (US) REICHMAN, Steven, H. Shrewsbury, MA 01545 (US) DELGADO, Hugo, E. Westboro, MA 01581 (US) (74) Representative: Godwin, Edgar James, et al  MARKS & CLERK, 57-60 Lincoln's Inn Fields London WC2A 3LS London WC2A 3LS (GB)