(19)

(11)

EP 4 288 667 A1

(12)

(43) Date of publication: 13.12.2023 Bulletin 2023/50 (21) Application number: 22703962.5 (22) Date of filing: 01.02.2022

(51) International Patent Classification (IPC):  F04B 49/06(2006.01) F04D 15/00(2006.01) F04C 25/02(2006.01) (52) Cooperative Patent Classification (CPC): F04B 49/065; F04C 25/02; F04D 15/00 (86) International application number: PCT/GB2022/050259 (87) International publication number: WO 2022/167782 (11.08.2022 Gazette 2022/32)

(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: 03.02.2021 GB 202101448 (71) Applicant: Edwards Limited Burgess Hill, Sussex RH15 9TW (GB)	(72) Inventors: HASLETT, Brent Sussex BN22 9BA (GB) KOLANI, Rajani Burgess Hill Sussex RH15 9TW (GB) MARINI, Lawrence Gerard Burgess Hill Sussex RH15 9TW (GB) KAISER, Alexander 50968 Cologne (DE) REINHARD, Daniel 50968 Cologne (DE) (74) Representative: Arnold, Emily Anne  Edwards Limited Innovation Drive Burgess Hill, West Sussex RH15 9TW Burgess Hill, West Sussex RH15 9TW (GB)