(19)

(11)

EP 2 805 025 A1

(12)

(43) Date of publication: 26.11.2014 Bulletin 2014/48 (21) Application number: 12872268.3 (22) Date of filing: 28.12.2012

(51) International Patent Classification (IPC):  F01D 11/14(2006.01) (86) International application number: PCT/US2012/072133 (87) International publication number: WO 2013/141937 (26.09.2013 Gazette 2013/39)

(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 (30) Priority: 30.12.2011 US 201161581793 P (71) Applicant: Rolls-Royce North American Technologies, Inc. Indianapolis, IN 46241 (US)	(72) Inventor: MORRISON, Adam, J. Greenwood, IN 46142 (US) (74) Representative: Roberts, Peter David  Marks & Clerk LLP 1 New York Street Manchester, M1 4HD Manchester, M1 4HD (GB)