(19)

(11)

EP 2 478 319 A1

(12)

(43) Date of publication: 25.07.2012 Bulletin 2012/30 (21) Application number: 10817484.8 (22) Date of filing: 08.09.2010

(51) International Patent Classification (IPC):  F28F 9/26(2006.01) F28F 1/22(2006.01) F28D 1/047(2006.01) (86) International application number: PCT/NO2010/000329 (87) International publication number: WO 2011/034436 (24.03.2011 Gazette 2011/12)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR (30) Priority: 18.09.2009 NO 20093024 (71) Applicant: Norsk Hydro ASA 0240 Olso (NO)	(72) Inventors: JØRGENSEN, Richard, Lang Melbourne FL 32940 (US) INSALACO, Jeffrey, L. Rockledge FL 32955 (US) (74) Representative: Hofseth, Svein  Patent and Trademark Department Hydro Aluminium AS 0240 Oslo 0240 Oslo (NO)