(19)

(11)

EP 3 234 262 A1

(12)

(43) Date of publication: 25.10.2017 Bulletin 2017/43 (21) Application number: 14825195.2 (22) Date of filing: 19.12.2014

(51) International Patent Classification (IPC):  E01C 13/02(2006.01) (86) International application number: PCT/NL2014/050896 (87) International publication number: WO 2016/099253 (23.06.2016 Gazette 2016/25)

(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 (71) Applicant: Ten Cate Thiolon B.V. 7443 RE Nijverdal (NL)	(72) Inventor: CRAVEN, Robin John Kidderminster Worcestershire DY10 3DR (GB) (74) Representative: Nederlandsch Octrooibureau  P.O. Box 29720 2502 LS The Hague 2502 LS The Hague (NL)