(19)

(11)

EP 2 307 652 A1

(12)

(43) Date of publication: 13.04.2011 Bulletin 2011/15 (21) Application number: 08758221.9 (22) Date of filing: 10.06.2008

(51) International Patent Classification (IPC):  E06B 9/307(2006.01) (86) International application number: PCT/DK2008/000212 (87) International publication number: WO 2009/149708 (17.12.2009 Gazette 2009/51)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA MK RS (71) Applicant: VKR Holding A/S 2970 Hørsholm (DK)	(72) Inventors: BIRKKJÆR, Martin DK-6731 Tjæreborg (DK) KOLD, Ove DK-6900 Skjern (DK) (74) Representative: Koch, Jakob et al Awapatent A/S Rigensgade 11 DK-1316 Copenhagen K DK-1316 Copenhagen K (DK)