(19)

(11)

EP 2 167 734 A1

(12)

(43) Date of publication: 31.03.2010 Bulletin 2010/13 (21) Application number: 07728965.0 (22) Date of filing: 10.05.2007

(51) International Patent Classification (IPC):  E02D 3/12(2006.01) (86) International application number: PCT/EP2007/054513 (87) International publication number: WO 2008/138390 (20.11.2008 Gazette 2008/47)

(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 MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (71) Applicant: Smet, Luc Maria Hugo Corneel 2480 Dessel (BE)	(72) Inventor: Smet, Luc Maria Hugo Corneel 2480 Dessel (BE) (74) Representative: D'Halleweyn, Nele Veerle Trees Gertrudis  Arnold & Siedsma Sweelinckplein 1 2517 GK The Hague 2517 GK The Hague (NL)