(19)

(11)

EP 1 738 077 A1

(12)

(43) Date of publication: 03.01.2007 Bulletin 2007/01 (21) Application number: 05729670.9 (22) Date of filing: 31.03.2005

(51) International Patent Classification (IPC):  F04B 49/06(2006.01) (86) International application number: PCT/GB2005/001235 (87) International publication number: WO 2005/095800 (13.10.2005 Gazette 2005/41)

(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 MC NL PL PT RO SE SI SK TR (30) Priority: 31.03.2004 GB 0407297 (71) Applicant: ARTEMIS INTELLIGENT POWER LTD. Edinburgh EH9 3JL (GB)	(72) Inventors: CALDWELL, Niall, James Edinburgh EH10 5JB (GB) RAMPEN, William, Hugh, Salvin Edinburgh EH10 5AN (GB) STEIN, Uwe, Bernhard, Pascal Edinburgh EH15 2PT (GB) (74) Representative: Hanson, William Bennett et al Bromhead Johnson 19 Buckingham Street London WC2N 6EF London WC2N 6EF (GB)