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(11)

EP 4 185 909 A1

(12)

(43) Date of publication: 31.05.2023 Bulletin 2023/22 (21) Application number: 21749264.4 (22) Date of filing: 20.07.2021

(51) International Patent Classification (IPC):  G02B 6/44(2006.01) H02G 1/00(2006.01) G02B 6/46(2006.01) H02G 1/08(2006.01) (52) Cooperative Patent Classification (CPC): G02B 6/4459; G02B 6/4463; H02G 1/00; H02G 1/08; G02B 6/50 (86) International application number: PCT/GB2021/051857 (87) International publication number: WO 2022/018426 (27.01.2022 Gazette 2022/04)

(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: 21.07.2020 GB 202011263 (71) Applicant: Deflux Holdings Limited Somerset TA1 2UH (GB)	(72) Inventor: NUSBAUM, Laslo 7041 Wulkaprodersdorf (AT) (74) Representative: Grey, Ian Michael et al Venner Shipley LLP 200 Aldersgate London EC1A 4HD London EC1A 4HD (GB)