(19)

(11)

EP 3 356 674 A1

(12)

(43) Date of publication: 08.08.2018 Bulletin 2018/32 (21) Application number: 16794420.6 (22) Date of filing: 27.09.2016

(51) International Patent Classification (IPC):  F04B 11/00(2006.01) F04B 23/02(2006.01) F04B 15/02(2006.01) F04B 49/22(2006.01) (86) International application number: PCT/IB2016/055766 (87) International publication number: WO 2017/055994 (06.04.2017 Gazette 2017/14)

(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 Designated Validation States: MA MD (30) Priority: 29.09.2015 IT UB20154014 (71) Applicant: Certech S.P.A. A Socio Unico 41049 Sassuolo (Modena) (IT)	(72) Inventor: PALLADINI, Alberto 42035 Castelnuovo ne' Monti (Reggio Emilia) (IT) (74) Representative: Casadei, Giovanni  Bugnion S.p.A. Via Vellani Marchi, 20 41124 Modena 41124 Modena (IT)