(19)

(11)

EP 4 449 044 A1

(12)

(43) Date of publication: 23.10.2024 Bulletin 2024/43 (21) Application number: 22826849.6 (22) Date of filing: 07.11.2022

(51) International Patent Classification (IPC):  F28D 20/00(2006.01) F01K 3/12(2006.01) F22B 1/00(2006.01) (52) Cooperative Patent Classification (CPC): F28D 20/0034; F28D 2020/0095; F28D 2020/0082; F01K 3/12; Y02E 60/14; F01K 25/08; F01K 3/185 (86) International application number: PCT/US2022/049161 (87) International publication number: WO 2023/113937 (22.06.2023 Gazette 2023/25)

(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: 14.12.2021 US 202117550124 14.12.2021 US 202117550137 14.12.2021 US 202117550144 14.12.2021 US 202117550152 (71) Applicant: Norwich Technologies, Inc. White River Junction, Vermont 05001 (US)

(72) Inventors: LYNCH, Jonathan St. Johnsbury, Vermont 05819 (US) MCBRIDE, Troy Norwich, Vermont 05055 (US) STETTENHEIM, Joel Norwich, Vermont 05055 (US) EDSTROM, Per Erik Kristoffer Stockbridge, Vermont 05772 (US) JOHNSON, Leif Kilkenny West Lebanon, Vermont 03784 (US) BRAMBLES, Oliver James Wesham PR4 3FL (GB) (74) Representative: Froud, Christopher Andrew  Withers & Rogers LLP 2 London Bridge London SE1 9RA London SE1 9RA (GB)