(19)

(11)

EP 1 931 880 A1

(12)

(43) Date of publication: 18.06.2008 Bulletin 2008/25 (21) Application number: 06779305.9 (22) Date of filing: 06.09.2006

(51) International Patent Classification (IPC):  F04C 25/02(2006.01) F04C 18/12(2006.01) (86) International application number: PCT/GB2006/003286 (87) International publication number: WO 2007/036689 (05.04.2007 Gazette 2007/14)

(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 NL PL PT RO SE SI SK TR (30) Priority: 28.09.2005 GB 0519742 (71) Applicant: Edwards Limited Crawley, West Sussex RH10 9LW (GB)	(72) Inventors: BIRCH, Peter Hugh Burgess Hill, West Sussex RH15 9TT (GB) CZERNIAK, Michael Roger Clevedon, North Somerset BS21 6TH (GB) (74) Representative: Clark, Charles Robert  Edwards Limited Manor Royal Crawley, West Sussex RH10 2LW Crawley, West Sussex RH10 2LW (GB)