(19)

(11)

EP 2 844 879 A2

(12)

(88) Date of publication A3: 27.12.2013 (43) Date of publication: 11.03.2015 Bulletin 2015/11 (21) Application number: 13719145.8 (22) Date of filing: 24.04.2013

(51) International Patent Classification (IPC):  F04C 25/02(2006.01) F04D 27/00(2006.01) F04C 28/06(2006.01) F04D 19/04(2006.01) (86) International application number: PCT/GB2013/051033 (87) International publication number: WO 2013/164571 (07.11.2013 Gazette 2013/45)

(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 RS SE SI SK SM TR Designated Extension States: BA ME (30) Priority: 02.05.2012 GB 201207721 (71) Applicant: Edwards Limited Crawley, West Sussex RH10 9LW (GB)	(72) Inventor: TATTERSALL, Jack Raymond Lancing Sussex BN15 8JN (GB) (74) Representative: Clark, Charles Robert et al Edwards Limited Intellectual Property Manor Royal Crawley West Sussex RH10 9LW Crawley West Sussex RH10 9LW (GB)