(19)

(11)

EP 2 454 417 A1

(12)

(43) Date of publication: 23.05.2012 Bulletin 2012/21 (21) Application number: 10730478.4 (22) Date of filing: 12.07.2010

(51) International Patent Classification (IPC):  E02B 3/20(2006.01) (86) International application number: PCT/EP2010/059985 (87) International publication number: WO 2011/006872 (20.01.2011 Gazette 2011/03)

(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 SE SI SK SM TR Designated Extension States: BA ME RS (30) Priority: 15.07.2009 IT BO20090456 (71) Applicant: Arco S.R.L. 40017 San Giovanni In Persiceto (IT)	(72) Inventor: MATTIOLI, Francesco I-40017 San Giovanni In Persiceto (IT) (74) Representative: Modiano, Micaela Nadia et al Modiano & Partners (IT) Via Meravigli, 16 20123 Milano 20123 Milano (IT)