(19)

(11)

EP 2 545 223 A1

(12)

(43) Date of publication: 16.01.2013 Bulletin 2013/03 (21) Application number: 11719885.3 (22) Date of filing: 09.03.2011

(51) International Patent Classification (IPC):  E02D 29/02(2006.01) E04B 2/12(2006.01) E04C 1/39(2006.01) (86) International application number: PCT/IB2011/050980 (87) International publication number: WO 2011/111002 (15.09.2011 Gazette 2011/37)

(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: 09.03.2010 PT 10105009 (71) Applicant: Vieira Da Cunha, António José 4420-213 Gondomar (PT)	(72) Inventor: Vieira Da Cunha, António José 4420-213 Gondomar (PT) (74) Representative: Ferreira, Maria Silvina et al Clarke, Modet & Co. Rua Castilho, 50-9° 1269-163 Lisboa 1269-163 Lisboa (PT)