(19)

(11)

EP 4 436 809 A1

(12)

(43) Date of publication: 02.10.2024 Bulletin 2024/40 (21) Application number: 22778158.0 (22) Date of filing: 07.09.2022

(51) International Patent Classification (IPC):  B60H 1/00(2006.01) F28D 1/04(2006.01) B60H 1/32(2006.01) (52) Cooperative Patent Classification (CPC): B60H 1/3227; B60H 1/323; B60H 1/00335; F28D 1/0417; F28D 1/0426; F28D 1/05391 (86) International application number: PCT/US2022/042718 (87) International publication number: WO 2023/091221 (25.05.2023 Gazette 2023/21)

(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: 22.11.2021 US 202163281955 P 14.12.2021 US 202163289386 P 18.03.2022 US 202217698388 (71) Applicant: Air International (US) Inc. Auburn Hills, Michigan 48326 (US)

(72) Inventors: SPRYSHAK, Joseph J. Hartland, Michigan 48353 (US) MCCLANAHAN, Brendan Stewart Auburn Hills, Michigan 48326 (US) (74) Representative: Arnold & Siedsma  Bezuidenhoutseweg 57 2594 AC The Hague 2594 AC The Hague (NL)