(19)

(11)

EP 2 956 674 A1

(12)

(43) Date of publication: 23.12.2015 Bulletin 2015/52 (21) Application number: 13705549.7 (22) Date of filing: 15.02.2013

(51) International Patent Classification (IPC):  F04D 19/04(2006.01) F04D 29/057(2006.01) F04D 23/00(2006.01) (86) International application number: PCT/GB2013/050363 (87) International publication number: WO 2014/125238 (21.08.2014 Gazette 2014/34)

(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 (71) Applicant: Edwards Limited Manor Royal Crawley West Sussex RH10 9LW (GB)	(72) Inventors: SCHOFIELD, Nigel Burgess Hill West Sussex RH15 9TW (GB) DOWDESWELL, Stephen Burgess Hill West Sussex RH15 9TW (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)