(19)

(11)

EP 2 815 094 A1

(12)

(43) Date of publication: 24.12.2014 Bulletin 2014/52 (21) Application number: 12734930.6 (22) Date of filing: 09.07.2012

(51) International Patent Classification (IPC):  F01P 5/10(2006.01) F04D 29/46(2006.01) F01P 7/16(2006.01) F04D 15/00(2006.01) (86) International application number: PCT/EP2012/063435 (87) International publication number: WO 2013/120543 (22.08.2013 Gazette 2013/34)

(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 (30) Priority: 14.02.2012 WO PCT/EP2012/052525 31.05.2012 WO PCT/EP2012/060275 (71) Applicant: Pierburg Pump Technology GmbH 41460 Neuss (DE)	(72) Inventor: WICKERATH, Bernd 41199 Mönchengladbach (DE) (74) Representative: Patentanwälte ter Smitten Eberlein Rütten Partnerschaftsgesellschaft  Burgunderstraße 29 40549 Düsseldorf 40549 Düsseldorf (DE)