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(11)

EP 4 295 384 A1

(12)

(43) Date of publication: 27.12.2023 Bulletin 2023/52 (21) Application number: 22707309.5 (22) Date of filing: 16.02.2022

(51) International Patent Classification (IPC):  H01H 37/04(2006.01) H01H 37/76(2006.01) (52) Cooperative Patent Classification (CPC): H01H 37/04; H01H 37/765 (86) International application number: PCT/US2022/016615 (87) International publication number: WO 2022/178002 (25.08.2022 Gazette 2022/34)

(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: 18.02.2021 CN 202110187989 15.02.2022 US 202217671755 (71) Applicant: Therm-O-Disc, Incorporated Mansfield, Ohio 44907 (US)	(72) Inventors: ZHAO, Changcai Zhuhai, Guangdong 519000 (CN) GUAN, Rong Zhuhai, Guangdong 519000 (CN) XIE, Hongfang Zhuhai, Guangdong 519000 (CN) (74) Representative: Collins, Emily Jane et al Kilburn & Strode LLP Lacon London 84 Theobalds Road London WC1X 8NL London WC1X 8NL (GB)