(19)

(11)

EP 1 971 730 A1

(12)

(43) Date of publication: 24.09.2008 Bulletin 2008/39 (21) Application number: 06835966.0 (22) Date of filing: 21.12.2006

(51) International Patent Classification (IPC):  E04D 13/17(2006.01) (86) International application number: PCT/SE2006/050613 (87) International publication number: WO 2007/081265 (19.07.2007 Gazette 2007/29)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR (30) Priority: 13.01.2006 SE 0600068 (71) Applicant: Börjesson, Tomas 534 31 Vara (SE)	(72) Inventor: BRAND, Kent S-761 71 Norrtälje (SE) (74) Representative: Bergentall, Annika Maria  Cegumark AB, P.O. Box 53047 400 14 Göteborg 400 14 Göteborg (SE)