(19)

(11)

EP 4 162 162 A1

(12)

(43) Date of publication: 12.04.2023 Bulletin 2023/15 (21) Application number: 21734897.8 (22) Date of filing: 08.06.2021

(51) International Patent Classification (IPC):  F04C 25/02(2006.01) F04D 29/58(2006.01) F04D 19/04(2006.01) F04C 29/04(2006.01) (52) Cooperative Patent Classification (CPC): F04D 19/04; F04C 25/02; F04D 29/584; F04C 29/04 (86) International application number: PCT/GB2021/051414 (87) International publication number: WO 2021/250390 (16.12.2021 Gazette 2021/50)

(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: 09.06.2020 GB 202008675 (71) Applicant: Edwards Limited Burgess Hill, Sussex RH15 9TW (GB)	(72) Inventors: KAILASAM, Sivabalan Burgess Hill Sussex RH15 9TW (GB) GRAY, Malcolm William Burgess Hill 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)