(19)

(11)

EP 2 989 255 A1

(12)

(43) Date of publication: 02.03.2016 Bulletin 2016/09 (21) Application number: 14731833.1 (22) Date of filing: 25.04.2014

(51) International Patent Classification (IPC):  E01F 8/00(2006.01) E01C 19/00(2006.01) (86) International application number: PCT/NL2014/050273 (87) International publication number: WO 2014/175739 (30.10.2014 Gazette 2014/44)

(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 Designated Extension States: BA ME (30) Priority: 25.04.2013 NL 2010704 (71) Applicant: R.N. Machinebouw B.V. 9206 AA Drachten (NL)	(72) Inventor: NICOLAI, Roel NL-9289 LD Drogeham (NL) (74) Representative: Mink-Lindenburg, Charlotte Hildegard  Octrooibureau Mink B.V. P.O. Box 53 7600 AB Almelo 7600 AB Almelo (NL)