(19)

(11)

EP 4 499 985 A1

(12)

(43) Date of publication: 05.02.2025 Bulletin 2025/06 (21) Application number: 23717611.0 (22) Date of filing: 30.03.2023

(51) International Patent Classification (IPC):  F01C 19/00(2006.01) F04C 27/00(2006.01) F04C 18/02(2006.01) F04C 29/00(2006.01) (52) Cooperative Patent Classification (CPC): F04C 18/0215; F04C 18/0253; F01C 19/005; F04C 27/005; F04C 2240/50; F04C 29/0021 (86) International application number: PCT/GB2023/050824 (87) International publication number: WO 2023/187377 (05.10.2023 Gazette 2023/40)

(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: KH MA MD TN (30) Priority: 30.03.2022 GB 202204515 (71) Applicant: Edwards Limited Burgess Hill, Sussex RH15 9TW (GB)	(72) Inventors: SCHOFIELD, Nigel Paul Burgess Hill, Sussex RH15 9TW (GB) HOLBROOK, Alan Ernest Kinnaird Burgess Hill, Sussex RH15 9TW (GB) BEDWELL, David Burgess Hill, Sussex RH15 9TW (GB) (74) Representative: Booth, Andrew Steven  Edwards Limited Innovation Drive Burgess Hill, West Sussex RH15 9TW Burgess Hill, West Sussex RH15 9TW (GB)