(19)

(11)

EP 3 325 881 A1

(12)

(43) Date of publication: 30.05.2018 Bulletin 2018/22 (21) Application number: 16757057.1 (22) Date of filing: 21.07.2016

(51) International Patent Classification (IPC):  F23N 1/00(2006.01) F23N 5/24(2006.01) F23N 5/10(2006.01) (86) International application number: PCT/IB2016/001043 (87) International publication number: WO 2017/013487 (26.01.2017 Gazette 2017/04)

(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: 23.07.2015 IT UB20152426 (71) Applicant: Tre P Engineering S.r.l. 60033 Chiaravalle (AN) (IT)	(72) Inventors: USCI, Rosalino I-60035 Jesi (AN) (IT) MARCANTONI, Michele I-60020 Polverigi (AN) (IT) BELMONTI, Daniele I-60022 Castelfidardo (AN) (IT) ONORI, Roberto I-63900 Fermo (FM) (IT) (74) Representative: Premru, Rok  c/o Mar.Bre S.r.l. Via San Filippo, 2 60044 Fabriano (AN) 60044 Fabriano (AN) (IT)