(19)

(11)

EP 1 871 957 A1

(12)

(43) Date of publication: 02.01.2008 Bulletin 2008/01 (21) Application number: 05814972.5 (22) Date of filing: 22.11.2005

(51) International Patent Classification (IPC):  E03D 5/00(2006.01) (86) International application number: PCT/BR2005/000238 (87) International publication number: WO 2006/105627 (12.10.2006 Gazette 2006/41)

(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 (30) Priority: 05.04.2005 BR PI0503492 (71) Applicant: Leitao, Jair Scherrer CEP-30380-740 Belo Horizonte-MG (BR)	(72) Inventor: Leitao, Jair Scherrer CEP-30380-740 Belo Horizonte-MG (BR) (74) Representative: Lorente Berges, Ana  C/Félix Boix 3 - 7. C 28036 Madrid 28036 Madrid (ES)