(19)

(11)

EP 2 536 882 A2

(12)

(88) Date of publication A3: 10.05.2012 (43) Date of publication: 26.12.2012 Bulletin 2012/52 (21) Application number: 11706639.9 (22) Date of filing: 18.02.2011

(51) International Patent Classification (IPC):  E02D 5/80(2006.01) E04H 12/22(2006.01) (86) International application number: PCT/NL2011/050116 (87) International publication number: WO 2011/102722 (25.08.2011 Gazette 2011/34)

(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: 18.02.2010 NL 2004258 (71) Applicant: Kloosterman Waterbouw 7951 HP Staphorst (NL)	(72) Inventor: KLOOSTERMAN, Roelof NL-7951 HP Staphorst (NL) (74) Representative: Clarkson, Paul Magnus  Nederlandsch Octrooibureau J.W. Frisolaan 13 2517 JS Den Haag 2517 JS Den Haag (NL)