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(11)

EP 4 771 313 A1

(12)

(43) Date of publication: 08.07.2026 Bulletin 2026/28 (21) Application number: 24833235.5 (22) Date of filing: 12.12.2024

(51) International Patent Classification (IPC):  F24D 13/02(2006.01) H05B 3/26(2006.01) (52) Cooperative Patent Classification (CPC): F24D 13/022; F24D 13/024; H05B 3/26; H05B 2203/026 (86) International application number: PCT/EP2024/086009 (87) International publication number: WO 2025/125481 (19.06.2025 Gazette 2025/25)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: GE KH MA MD TN (30) Priority: 12.12.2023 NL 2036496 (71) Applicant: Li&Co AG 7537 Müstair (CH)	(72) Inventor: LINGG, Edwin 39020 Schluderns (IT) (74) Representative: Patentwerk B.V.  P.O. Box 1514 5200 BN 's-Hertogenbosch 5200 BN 's-Hertogenbosch (NL)