(19)

(11)

EP 2 504 633 A1

(12)

(43) Date of publication: 03.10.2012 Bulletin 2012/40 (21) Application number: 10831870.0 (22) Date of filing: 25.10.2010

(51) International Patent Classification (IPC):  F24J 2/20(2006.01) E04B 1/00(2006.01) (86) International application number: PCT/SE2010/051151 (87) International publication number: WO 2011/062541 (26.05.2011 Gazette 2011/21)

(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: 23.11.2009 SE 0901475 (71) Applicant: Nordiska Balco AB 352 45 Växjö (SE)	(72) Inventor: BJÖRKMAN, Lars S-394 77 Kalmar (SE) (74) Representative: Simonsson, Erik  Awapatent AB P.O. Box 5117 20071 Malmö 20071 Malmö (SE)