(19)

(11)

EP 2 524 087 A1

(12)

(43) Date of publication: 21.11.2012 Bulletin 2012/47 (21) Application number: 11709182.7 (22) Date of filing: 12.01.2011

(51) International Patent Classification (IPC):  E03D 1/14(2006.01) E03D 1/34(2006.01) (86) International application number: PCT/IB2011/000040 (87) International publication number: WO 2011/086452 (21.07.2011 Gazette 2011/29)

(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 (30) Priority: 12.01.2010 IT MI20100017 (71) Applicant: Oliveira & Irmao S.A. 3800 Aveiro (PT)	(72) Inventor: FREITAS MACHADO, Joao Tiago P-4780-549 Santo Tirso (PT) (74) Representative: Jorio, Paolo et al Studio Torta S.p.A. Via Viotti, 9 10121 Torino 10121 Torino (IT)