(19)

(11)

EP 2 895 741 A1

(12)

(43) Date of publication: 22.07.2015 Bulletin 2015/30 (21) Application number: 12812513.5 (22) Date of filing: 07.12.2012

(51) International Patent Classification (IPC):  F03D 11/00(2006.01) (86) International application number: PCT/DK2012/050450 (87) International publication number: WO 2014/040598 (20.03.2014 Gazette 2014/12)

(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: 17.09.2012 US 201261702220 P (71) Applicant: Vestas Wind Systems A/S 8200 Aarhus N (DK)	(72) Inventor: ØLLGAARD, Børge DK-6700 Esbjerg (DK) (74) Representative: Vestas Patents Department  Hedeager 42 8200 Aarhus N 8200 Aarhus N (DK)