(19)

(11)

EP 1 565 280 A2

(12)

(88) Date of publication A3: 01.07.2004 (43) Date of publication: 24.08.2005 Bulletin 2005/34 (21) Application number: 03808729.2 (22) Date of filing: 16.10.2003

(51) International Patent Classification (IPC)7: B21C 37/00 (86) International application number: PCT/EP2003/011461 (87) International publication number: WO 2004/035239 (29.04.2004 Gazette 2004/18)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 18.10.2002 SE 0203103 (71) Applicant: Spiro S.A. 3178 Boesingen (CH)	(72) Inventor: BINGGELI, Rudolf CH-5610 Wohlen (CH) (74) Representative: Jörgensson, Leif Sixten  Awapatent AB P.O. Box 5117 S-200 71 Malmö S-200 71 Malmö (SE)