(19)

(11)

EP 3 408 457 A1

(12)

(43) Date of publication: 05.12.2018 Bulletin 2018/49 (21) Application number: 17704178.7 (22) Date of filing: 30.01.2017

(51) International Patent Classification (IPC):  E03B 3/02(2006.01) E04D 13/08(2006.01) (86) International application number: PCT/EP2017/051930 (87) International publication number: WO 2017/129817 (03.08.2017 Gazette 2017/31)

(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 Designated Validation States: MA MD (30) Priority: 29.01.2016 NL 1041702 (71) Applicant: Wavin B.V. 8011 CW Zwolle (NL)	(72) Inventor: REUMER, Frederik Gerard 7908 WB Hoogeveen (NL) (74) Representative: Hoffmann Eitle  Patent- und Rechtsanwälte PartmbB Arabellastraße 30 81925 München 81925 München (DE)