(19)

(11)

EP 2 100 081 A2

(12)

(88) Date of publication A3: 02.10.2008 (43) Date of publication: 16.09.2009 Bulletin 2009/38 (21) Application number: 07869131.8 (22) Date of filing: 12.12.2007

(51) International Patent Classification (IPC):  F25B 31/00(2006.01) F25B 49/02(2006.01) (86) International application number: PCT/US2007/087170 (87) International publication number: WO 2008/073955 (19.06.2008 Gazette 2008/25)

(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 MT NL PL PT RO SE SI SK TR Designated Extension States: AL BA HR MK RS (30) Priority: 12.12.2006 US 609656 (71) Applicant: American Power Conversion Corporation West Kingston, RI 02892 (US)	(72) Inventors: CHRISTENSEN, Ole Moelgaard 6100 Haderslev (DK) HYLSEBACK, Bo 6040 Egtved (DK) CARLSEN, Peter Ring 9000 Aalborg (DK) (74) Representative: Jackson, Martin Peter  J.A. Kemp & Co. 14 South Square Gray's Inn London WC1R 5JJ London WC1R 5JJ (GB)