(19)

(11)

EP 1 853 776 A1

(12)

(43) Date of publication: 14.11.2007 Bulletin 2007/46 (21) Application number: 06723137.3 (22) Date of filing: 28.02.2006

(51) International Patent Classification (IPC):  E04D 1/20(2006.01) (86) International application number: PCT/EP2006/001822 (87) International publication number: WO 2006/092267 (08.09.2006 Gazette 2006/36)

(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 NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK YU (30) Priority: 01.03.2005 IT VE20050010 (71) Applicant: Polinext S.R.L. 31050 VILLORBA (IT)	(72) Inventor: LORENZON, Raffaele I-31059 Zero Branco (IT) (74) Representative: Piovesana, Paolo  Via F. Baracca, 5/a 30173 Venezia-Mestre 30173 Venezia-Mestre (IT)