(19)

(11)

EP 4 196 684 A1

(12)

(43) Date of publication: 21.06.2023 Bulletin 2023/25 (21) Application number: 21755544.0 (22) Date of filing: 05.08.2021

(51) International Patent Classification (IPC):  F04C 18/30(2006.01) F04F 5/42(2006.01) F04C 27/02(2006.01) F04D 17/18(2006.01) (52) Cooperative Patent Classification (CPC): F04C 18/30; F04F 5/42; F04C 27/02; F04D 17/18 (86) International application number: PCT/GB2021/052025 (87) International publication number: WO 2022/034292 (17.02.2022 Gazette 2022/07)

(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: 11.08.2020 GB 202012475 (71) Applicant: Edwards Limited Burgess Hill, Sussex RH15 9TW (GB)	(72) Inventors: SMITH, Paul David Burgess Hill Sussex RH15 9TW (GB) MCBRIEN, Peter Anthony Burgess Hill Sussex RH15 9TW (GB) TOMKINS, Mark Edward Burgess Hill Sussex RH15 9TW (GB) (74) Representative: Arnold, Emily Anne  Edwards Limited Innovation Drive Burgess Hill, West Sussex RH15 9TW Burgess Hill, West Sussex RH15 9TW (GB)