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(11)

EP 2 663 752 A1

(12)

(43) Date of publication: 20.11.2013 Bulletin 2013/47 (21) Application number: 11700130.5 (22) Date of filing: 11.01.2011

(51) International Patent Classification (IPC):  F01P 5/12(2006.01) F04D 13/02(2006.01) F01P 7/16(2006.01) (86) International application number: PCT/EP2011/050258 (87) International publication number: WO 2012/095167 (19.07.2012 Gazette 2012/29)

(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 (71) Applicant: Pierburg Pump Technology GmbH 41460 Neuss (DE)	(72) Inventors: DURAND, Jean-Michel F-57070 Metz (FR) REININGER, Pierre F-57970 Basse-Ham (FR) (74) Representative: Patentanwälte ter Smitten Eberlein Rütten Partnerschaftsgesellschaft  Burgunderstr. 29 40549 Düsseldorf 40549 Düsseldorf (DE)