(19)

(11)

EP 2 580 478 A2

(12)

(88) Date of publication A3: 02.02.2012 (43) Date of publication: 17.04.2013 Bulletin 2013/16 (21) Application number: 10784858.2 (22) Date of filing: 12.10.2010

(51) International Patent Classification (IPC):  F04D 5/00(2006.01) (86) International application number: PCT/IB2010/054614 (87) International publication number: WO 2011/154783 (15.12.2011 Gazette 2011/50)

(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: 08.06.2010 IT PD20100179 (71) Applicant: M Pumps Srl 45015 Corbola (RO) (IT)	(72) Inventors: MISCHIATTI, Antonio I-45015 Corbola (RO) (IT) MISCHIATTI, Adriano I-45015 Corbola (RO) (IT) MISCHIATTI, Massimo I-45015 Corbola (RO) (IT) (74) Representative: Vinci, Marcello  Ufficio Veneto Brevetti Via Sorio 116 35141 Padova 35141 Padova (IT)