(19)

(11)

EP 2 016 288 A1

(12)

(43) Date of publication: 21.01.2009 Bulletin 2009/04 (21) Application number: 07733620.4 (22) Date of filing: 16.04.2007

(51) International Patent Classification (IPC):  F04C 18/12(2006.01) F04C 18/02(2006.01) F04C 18/16(2006.01) F04C 29/00(2006.01) (86) International application number: PCT/GB2007/050198 (87) International publication number: WO 2007/132259 (22.11.2007 Gazette 2007/47)

(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: 11.05.2006 GB 0609306 (71) Applicant: Edwards Limited Crawley, West Sussex RH10 9LW (GB)	(72) Inventor: OKOROAFOR, Emmanuel Uzoma Burgess Hill Sussex RH15 9TT (GB) (74) Representative: Clark, Charles Robert  Edwards Limited Manor Royal Crawley, West Sussex RH10 9LW Crawley, West Sussex RH10 9LW (GB)