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(11)

EP 2 828 459 A1

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(43) Date of publication: 28.01.2015 Bulletin 2015/05 (21) Application number: 13720538.1 (22) Date of filing: 20.03.2013

(51) International Patent Classification (IPC):  E05D 13/00(2006.01) (86) International application number: PCT/IB2013/000483 (87) International publication number: WO 2013/140235 (26.09.2013 Gazette 2013/39)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 21.03.2012 IT MI20120440 (71) Applicant: Metallurgica Luigi Pessina Acciai S.p.A. 20122 Milano (IT)	(72) Inventor: GREPPI, Giovannantonio Maria I-20129 Milano (IT) (74) Representative: Riccardi, Sergio  Riccardi & Co. Via Macedonio Melloni, 32 20129 Milano 20129 Milano (IT)