(19)

(11)

EP 2 449 180 A1

(12)

(43) Date of publication: 09.05.2012 Bulletin 2012/19 (21) Application number: 09788431.6 (22) Date of filing: 30.06.2009

(51) International Patent Classification (IPC):  E03D 1/00(2006.01) E03D 11/12(2006.01) (86) International application number: PCT/PT2009/000037 (87) International publication number: WO 2011/002322 (06.01.2011 Gazette 2011/01)

(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 (71) Applicant: Pinto dos Santos, Carlos Alberto 1350-214 Lisboa (PT)	(72) Inventor: Pinto dos Santos, Carlos Alberto 1350-214 Lisboa (PT)