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EP 4 519 117 A2

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(88) Date of publication A3: 08.02.2024 (43) Date of publication: 12.03.2025 Bulletin 2025/11 (21) Application number: 23800015.2 (22) Date of filing: 04.05.2023

(51) International Patent Classification (IPC):  B60L 53/30(2019.01) B64F 1/00(2024.01) H02J 7/00(2006.01) B60L 53/18(2019.01) H02G 11/02(2006.01) (52) Cooperative Patent Classification (CPC): B60L 53/30; B65H 2701/34; B65H 75/4471; B65H 75/4428; B65H 75/4484; H02G 11/02; B60L 53/18; B60L 53/302; B60L 53/53; B60L 53/66; B60L 58/26; B60L 53/51; B60L 2200/10 (86) International application number: PCT/US2023/020953 (87) International publication number: WO 2023/215447 (09.11.2023 Gazette 2023/45)

(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 ME MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA Designated Validation States: KH MA MD TN (30) Priority: 04.05.2022 US 202217736530 24.05.2022 US 202217751870 24.05.2022 US 202217752248 28.02.2023 US 202318115375 01.03.2023 US 202318116020 03.04.2023 US 202318130064 (71) Applicant: Beta Air, LLC South Burlington, Vermont 05403 (US)

(72) Inventors: PALOMBINI, John Charles Burlington, VT 05403 (US) CARAPETYAN, Skye Burlington, VT 05403 (US) DONNELLY, Richard Burlington, VT 05403 (US) PILL, Jake Burlington, VT 05403 (US) HALL, Edward Burlington, VT 05403 (US) HANSON, Cole William Burlington, VT 05403 (US) WHITEHILL, James Burlington, VT 05403 (US) WARD, Nathan Burlington, VT 05403 (US) WILLIAMS, Bruce Burlington, VT 05403 (US) (74) Representative: Appleyard Lees IP LLP  15 Clare Road Halifax HX1 2HY Halifax HX1 2HY (GB)