(19)

(11)

EP 1 573 152 A1

(12)

(43) Date of publication: 14.09.2005 Bulletin 2005/37 (21) Application number: 03781102.3 (22) Date of filing: 27.11.2003

(51) International Patent Classification (IPC)7: E04H 12/02 (86) International application number: PCT/NO2003/000398 (87) International publication number: WO 2004/057133 (08.07.2004 Gazette 2004/28)

(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 Designated Extension States: AL LT LV MK (30) Priority: 19.12.2002 NO 20026102 14.10.2003 NO 20034606 (71) Applicant: Skagerak Energi AS 3901 Porsgrunn (NO)	(72) Inventor: STORROESAETER, Rune,c/o Skagerak Energi AS 3901 Porsgrunn (NO) (74) Representative: Briddes, Sam  Onsagers Ltd c/o Innovation Norway 5 Lower Regent Street London SW1Y 4LR London SW1Y 4LR (GB)