(19)

(11)

EP 4 004 459 A1

(12)

(43) Date of publication: 01.06.2022 Bulletin 2022/22 (21) Application number: 20844316.8 (22) Date of filing: 21.07.2020

(51) International Patent Classification (IPC):  F25B 9/04(2006.01) (52) Cooperative Patent Classification (CPC): F25B 9/04 (86) International application number: PCT/CA2020/051006 (87) International publication number: WO 2021/012045 (28.01.2021 Gazette 2021/04)

(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: 22.07.2019 US 201962876936 P 09.03.2020 US 202062987070 P (71) Applicant: Nex Flow Air Products Corp. Richmond Hill, Ontario L4C 3C7 (CA)	(72) Inventors: SINGH, Amanjot Richmond Hill, Ontario L4C 3C7 (CA) RAPCHAK, Leslie Frank Richmond Hill, Ontario L4C 3C7 (CA) (74) Representative: Maikowski & Ninnemann Patentanwälte Partnerschaft mbB  Postfach 15 09 20 10671 Berlin 10671 Berlin (DE)