(19)

(11)

EP 2 501 880 A2

(12)

(88) Date of publication A3: 11.08.2011 (43) Date of publication: 26.09.2012 Bulletin 2012/39 (21) Application number: 10763888.4 (22) Date of filing: 24.09.2010

(51) International Patent Classification (IPC):  E04G 5/14(2006.01) (86) International application number: PCT/NL2010/050620 (87) International publication number: WO 2011/062483 (26.05.2011 Gazette 2011/21)

(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 SE SI SK SM TR (30) Priority: 20.11.2009 NL 2003841 21.12.2009 NL 2004000 (71) Applicant: Harsco Infrastructure B.V. 5707 CL Helmond (NL)	(72) Inventor: VAN OERS, Petrus Christianus Johanna Maria NL-5674 VZ Nuenen (NL) (74) Representative: Jilderda, Anne Ayolt  Octrooibureau LIOC B.V. Nieuwegracht 15 Postbus 13363 3507 LJ Utrecht 3507 LJ Utrecht (NL)