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(11)

EP 3 240 970 A1

(12)

(43) Date of publication: 08.11.2017 Bulletin 2017/45 (21) Application number: 15823606.7 (22) Date of filing: 29.12.2015

(51) International Patent Classification (IPC):  F21V 21/14(2006.01) F21V 14/02(2006.01) F21V 21/30(2006.01) F21Y 115/10(2016.01) (86) International application number: PCT/EP2015/081334 (87) International publication number: WO 2016/107863 (07.07.2016 Gazette 2016/27)

(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: 30.12.2014 IT MI20142281 (71) Applicant: Nordgas S.r.l. 23845 Costa Masnaga (LC) (IT)	(72) Inventor: INVERNIZZI, Gianmario I-23900 Lecco (IT) (74) Representative: Zanoli, Enrico et al Zanoli & Giavarini S.p.A. Via Melchiorre Gioia, 64 20125 Milano 20125 Milano (IT)