(19)

(11)

EP 1 303 366 A1

(12)

(43) Date of publication: 23.04.2003 Bulletin 2003/17 (21) Application number: 00919845.8 (22) Date of filing: 29.03.2000

(51) International Patent Classification (IPC)7: B21D 51/44 (86) International application number: PCT/US0008/382 (87) International publication number: WO 0107/2446 (04.10.2001 Gazette 2001/40)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: BALL CORPORATION Broomfield,Colorado 80021 (US)	(72) Inventor: CHASTEEN, Howard, C. Golden, CO 80403 (US) (74) Representative: Bockhorni, Josef, Dipl.-Ing.  PatentanwälteHerrmann-TrentepohlGrosse - Bockhorni & PartnerForstenrieder Allee 59 81476 München 81476 München (DE)