(19)

(11)

EP 2 430 254 A2

(12)

(88) Date of publication A3: 26.05.2011 (43) Date of publication: 21.03.2012 Bulletin 2012/12 (21) Application number: 10721764.8 (22) Date of filing: 12.05.2010

(51) International Patent Classification (IPC):  E04B 9/12(2006.01) (86) International application number: PCT/EP2010/056548 (87) International publication number: WO 2010/130783 (18.11.2010 Gazette 2010/46)

(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 (30) Priority: 13.05.2009 IT VE20090006 U (71) Applicant: ATENA S.p.A. 30020 Gruaro, VE (IT)	(72) Inventor: BARBUIO, Mauro I-30020 Gruaro (IT) (74) Representative: Piovesana, Paolo  Via F. Baracca, 5/a 30173 Venezia-Mestre 30173 Venezia-Mestre (IT)