(19)

(11)

EP 2 049 278 A2

(12)

(88) Date of publication A3: 19.06.2008 (43) Date of publication: 22.04.2009 Bulletin 2009/17 (21) Application number: 07825995.9 (22) Date of filing: 07.08.2007

(51) International Patent Classification (IPC):  B21D 1/08(2006.01) B21D 3/14(2006.01) (86) International application number: PCT/IB2007/053112 (87) International publication number: WO 2008/018022 (14.02.2008 Gazette 2008/07)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 09.08.2006 IT GE20060084 (71) Applicant: Pogliani & Rivolta S.p.A. 20145 Milano (IT)	(72) Inventor: BARISONZO, Luca 16132 Genova (IT) (74) Representative: Petruzziello, Aldo et al Racheli & C. S.p.A. Viale San Michele del Carso, 4 20144 Milano 20144 Milano (IT)