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(11)

EP 4 739 886 A1

(12)

(43) Date of publication: 13.05.2026 Bulletin 2026/20 (21) Application number: 24729907.6 (22) Date of filing: 15.05.2024

(51) International Patent Classification (IPC):  F01C 21/10(2006.01) F04C 18/12(2006.01) F04C 23/00(2006.01) F04C 18/08(2006.01) F04C 18/16(2006.01) F04C 25/02(2006.01) (52) Cooperative Patent Classification (CPC): F04C 18/16; F04C 18/126; F04C 23/001; F04C 2240/30; F04C 18/086; F01C 21/108; F04C 25/02; F04C 2230/60; F04C 2240/805 (86) International application number: PCT/GB2024/051266 (87) International publication number: WO 2025/008600 (09.01.2025 Gazette 2025/02)

(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: 03.07.2023 GB 202310164 (71) Applicant: Edwards Limited Burgess Hill, Sussex RH15 9TW (GB)	(72) Inventor: NORTH, Michael Henry Sussex RH15 9TW (GB) (74) Representative: Ford, Alexander  Edwards Limited Innovation Drive Burgess Hill, West Sussex RH15 9TW Burgess Hill, West Sussex RH15 9TW (GB)