(19)

(11)

EP 4 816 712 A1

(12)

(43) Date of publication: 07.10.2026 Bulletin 2026/41 (21) Application number: 24817083.9 (22) Date of filing: 22.11.2024

(51) International Patent Classification (IPC):  F16H 1/10(2006.01) F16H 3/42(2006.01) F16H 3/04(2006.01) (52) Cooperative Patent Classification (CPC): F16H 1/10; F16H 3/04; F16H 3/426 (86) International application number: PCT/EP2024/083294 (87) International publication number: WO 2025/114158 (05.06.2025 Gazette 2025/23)

(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: 28.11.2023 GB 202318117 (71) Applicant: Songhurst, Robert Charles Howard Trearddur Bay, Anglesey LL65 2WN (GB)	(72) Inventor: Songhurst, Robert Charles Howard Trearddur Bay, Anglesey LL65 2WN (GB) (74) Representative: J A Kemp LLP  80 Turnmill Street London EC1M 5QU London EC1M 5QU (GB)