(19)

(11)

EP 2 748 386 A1

(12)

(43) Date of publication: 02.07.2014 Bulletin 2014/27 (21) Application number: 12759274.9 (22) Date of filing: 24.08.2012

(51) International Patent Classification (IPC):  E04B 5/04(2006.01) E04B 5/10(2006.01) E04C 2/38(2006.01) E04B 5/14(2006.01) (86) International application number: PCT/NL2012/050583 (87) International publication number: WO 2013/028072 (28.02.2013 Gazette 2013/09)

(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 (30) Priority: 24.08.2011 NL 2007294 (71) Applicants: De Waal, Teunis 2811 HA Reeuwijk (NL) Van Der Haar, Willem 7873 BT Odoorn (NL) Douwes, Johannes Jacobus 7761 DM Schoonebeek (NL)	(72) Inventors: De Waal, Teunis 2811 HA Reeuwijk (NL) Van Der Haar, Willem 7873 BT Odoorn (NL) Douwes, Johannes Jacobus 7761 DM Schoonebeek (NL) (74) Representative: Nederlandsch Octrooibureau  P.O. Box 29720 2502 LS The Hague 2502 LS The Hague (NL)