(19)

(11)

EP 3 069 097 A1

(12)

(43) Date of publication: 21.09.2016 Bulletin 2016/38 (21) Application number: 14812630.3 (22) Date of filing: 14.11.2014

(51) International Patent Classification (IPC):  F41H 5/04(2006.01) (86) International application number: PCT/IB2014/066042 (87) International publication number: WO 2015/071866 (21.05.2015 Gazette 2015/20)

(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: 14.11.2013 IT BS20130166 (71) Applicant: Petroceramics S.p.A. 20133 Milano (IT)	(72) Inventors: VALLE, Massimiliano I-20133 Milano (IT) LOSA, Umberto I-20133 Milano (IT) (74) Representative: Zanettin, Gianluigi  Jacobacci & Partners S.p.A. Via Berchet, 9 35131 Padova 35131 Padova (IT)