(19)

(11)

EP 2 712 377 A1

(12)

(43) Date of publication: 02.04.2014 Bulletin 2014/14 (21) Application number: 12786062.5 (22) Date of filing: 16.05.2012

(51) International Patent Classification (IPC):  E04D 13/18(2014.01) F24J 2/24(2006.01) F24J 2/04(2006.01) (86) International application number: PCT/SE2012/050536 (87) International publication number: WO 2012/158119 (22.11.2012 Gazette 2012/47)

(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: 19.05.2011 SE 1150468 (71) Applicant: Bergkvist, Lars A. 894 40 Överhörnäs (SE)	(72) Inventor: Bergkvist, Lars A. 894 40 Överhörnäs (SE) (74) Representative: Örtenblad, Bertil Tore et al Noréns Patentbyra AB P.O. Box 10198 100 55 Stockholm 100 55 Stockholm (SE)