(19)

(11)

EP 3 548 749 A1

(12)

(43) Date of publication: 09.10.2019 Bulletin 2019/41 (21) Application number: 17817150.0 (22) Date of filing: 28.11.2017

(51) International Patent Classification (IPC):  F04D 7/04(2006.01) F04D 29/22(2006.01) B02C 18/00(2006.01) F04D 29/62(2006.01) (86) International application number: PCT/IB2017/057445 (87) International publication number: WO 2018/100488 (07.06.2018 Gazette 2018/23)

(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: 02.12.2016 IT 201600122865 (71) Applicant: Dreno Pompe Srl 35043 Monselice (PD) (IT)	(72) Inventor: CONFORTO, Emiliano 35043 MONSELICE (PD) (IT) (74) Representative: Vinci, Marcello  Ufficio Veneto Brevetti Via Sorio 116 35141 Padova 35141 Padova (IT)