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(11)

EP 4 051 581 A1

(12)

(43) Date of publication: 07.09.2022 Bulletin 2022/36 (21) Application number: 20797767.9 (22) Date of filing: 30.10.2020

(51) International Patent Classification (IPC):  B64C 11/00(2006.01) B64C 29/00(2006.01) F02K 5/00(2006.01) H02K 9/06(2006.01) B64D 27/24(2006.01) B64D 15/04(2006.01) H02K 5/20(2006.01) (52) Cooperative Patent Classification (CPC): B64C 29/00; B64D 15/04; B64D 27/24; F02K 5/00; H02K 9/06; H02K 7/14; B64C 11/001; Y02T 50/60 (86) International application number: PCT/EP2020/080588 (87) International publication number: WO 2021/084105 (06.05.2021 Gazette 2021/18)

(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: 01.11.2019 GB 201915944 03.12.2019 LU 101507 (71) Applicant: Geola Technologies Ltd. Falmer Brighton BN1 9SB (GB)	(72) Inventors: BROTHERTON-RATCLIFFE, David Brighton Sussex BN1 9SB (GB) STOKES, David Taliesin Brighton Sussex BN1 9SB (GB) (74) Representative: Dehns  St. Bride's House 10 Salisbury Square London EC4Y 8JD London EC4Y 8JD (GB)