(19)

(11)

EP 1 706 674 A1

(12)

(43) Date of publication: 04.10.2006 Bulletin 2006/40 (21) Application number: 03819170.6 (22) Date of filing: 10.12.2003

(51) International Patent Classification (IPC):  F24D 3/12(2006.01) E04F 15/02(2006.01) (86) International application number: PCT/DK2003/000842 (87) International publication number: WO 2005/064240 (14.07.2005 Gazette 2005/28)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR (71) Applicant: Dansk Varmekabel Aps 8722 Hedensted (DK)	(72) Inventor: HANSEN, Flemming, Bjorn DK-8722 Hedensted (DK) (74) Representative: Gregersen, Niels Henrik et al Patrade A/S Fredens Torv 3A 8000 Aarhus C 8000 Aarhus C (DK)