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EP 3 997 381 A1

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(43) Date of publication: 18.05.2022 Bulletin 2022/20 (21) Application number: 20754023.8 (22) Date of filing: 13.07.2020

(51) International Patent Classification (IPC):  F21S 8/08(2006.01) F21V 17/12(2006.01) G08B 13/196(2006.01) F21S 2/00(2016.01) F21V 15/01(2006.01) F21V 33/00(2006.01) F21W 131/103(2006.01) F21V 21/116(2006.01) (52) Cooperative Patent Classification (CPC): F21S 8/08; F21V 15/01; F21V 17/12; F21V 33/00; F21V 33/0052; F21W 2131/103; F21S 2/005; G08B 13/19632; F21V 21/116; G08B 13/19619 (86) International application number: PCT/IB2020/056555 (87) International publication number: WO 2021/009655 (21.01.2021 Gazette 2021/03)

(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: KH MA MD TN (30) Priority: 12.07.2019 IT 201900011607 (71) Applicant: Areti S.p.A. 00154 Rome (IT)	(72) Inventors: SVALUTO MOREOLO, Delio 00154 Rome (IT) GALLI, Alberto 00154 Rome (IT) (74) Representative: IP Sextant s.r.l.  Via A. Salandra, n.18 00187 Rome 00187 Rome (IT)