(19)

(11)

EP 1 581 705 A1

(12)

(43) Date of publication: 05.10.2005 Bulletin 2005/40 (21) Application number: 03786450.1 (22) Date of filing: 18.12.2003

(51) International Patent Classification (IPC)7: E04C 3/18 (86) International application number: PCT/NO2003/000427 (87) International publication number: WO 2004/055290 (01.07.2004 Gazette 2004/27)

(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 Designated Extension States: AL LT LV MK (30) Priority: 18.12.2002 NO 20026070 (71) Applicant: ENGEBRETSEN, Arne N-3503 Hoenefoss (NO)	(72) Inventor: ENGEBRETSEN, Arne N-3503 Hoenefoss (NO) (74) Representative: Ahmad, Sheikh Shakeel  David Keltie Associates Fleet Place House 2 Fleet Place London EC4M 7ET London EC4M 7ET (GB)