(19)

(11)

EP 2 864 563 A1

(12)

(43) Date of publication: 29.04.2015 Bulletin 2015/18 (21) Application number: 13762595.0 (22) Date of filing: 24.06.2013

(51) International Patent Classification (IPC):  E04G 21/22(2006.01) (86) International application number: PCT/NL2013/050446 (87) International publication number: WO 2013/191555 (27.12.2013 Gazette 2013/52)

(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: 22.06.2012 NL 2009054 (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)