(19)

(11)

EP 2 252 748 A2

(12)

(88) Date of publication A3: 15.10.2009 (43) Date of publication: 24.11.2010 Bulletin 2010/47 (21) Application number: 09707573.3 (22) Date of filing: 28.01.2009

(51) International Patent Classification (IPC):  E04F 11/18(2006.01) (86) International application number: PCT/IT2009/000022 (87) International publication number: WO 2009/098723 (13.08.2009 Gazette 2009/33)

(84) Designated Contracting States: 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 TR Designated Extension States: AL BA RS (30) Priority: 04.02.2008 IT RA20080007 (71) Applicant: Erreti S.R.L. 48010 Bagnara di Romagna (RA) (IT)	(72) Inventor: AVVANZINI, Ugo I-48010 Bagnara di Romagna (RA) (IT) (74) Representative: Roncuzzi, Davide  Roncuzzi & Associati S.r.l. Via Antica Zecca, 6 IT-48121 Ravenna IT-48121 Ravenna (IT)