(19)
(11) EP 1 163 438 A1

(12)

(43) Date of publication:
19.12.2001 Bulletin 2001/51

(21) Application number: 00913863.7

(22) Date of filing: 10.03.2000
(51) International Patent Classification (IPC)7F02F 3/00, F02F 7/00, B21C 23/18, B21K 1/18
(86) International application number:
PCT/US0006/238
(87) International publication number:
WO 0053/914 (14.09.2000 Gazette 2000/37)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 12.03.1999 RU 99105048

(71) Applicants:
  • GENERAL ELECTRIC COMPANY
    Schenectady, NY 12345 (US)
  • Institute for Metals Superplasticity Problems of the Russian Academy of Sciences
    Bashkortostan, 450001 (RU)

(72) Inventors:
  • KAIBYSHEV, Oscar Akramovich
    UfaBashkotorstan, 450005 (RU)
  • TRIFONOV, Vadim Gennadievich
    UfaBashkotorstan, 450059 (RU)

(74) Representative: Goode, Ian Roy et al
GE LONDON PATENT OPERATION, Essex House, 12/13 Essex Street
London WC2R 3AA
London WC2R 3AA (GB)

   


(54) METHOD FOR MANUFACTURING INTERNAL COMBUSTION ENGINE PISTONS