(19)

(11)

EP 4 739 406 A2

(12)

(88) Date of publication A3: 13.11.2025 (43) Date of publication: 13.05.2026 Bulletin 2026/20 (21) Application number: 24846663.3 (22) Date of filing: 05.07.2024

(51) International Patent Classification (IPC):  A63B 22/00(2006.01) (52) Cooperative Patent Classification (CPC): A63B 22/02; A63B 22/0023; A63B 2225/093; A63B 22/0012; A63B 69/0057; A63B 23/047 (86) International application number: PCT/US2024/036843 (87) International publication number: WO 2025/034328 (13.02.2025 Gazette 2025/07)

(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: GE KH MA MD TN (30) Priority: 06.07.2023 US 202363525167 P (71) Applicant: Yan, Hui Huntington Beach, CA 92646 (US)	(72) Inventor: Yan, Hui Huntington Beach, CA 92646 (US) (74) Representative: Wittmann, Günther  Patentanwaltskanzlei Wittmann Frans-Hals-Straße 31 81479 München 81479 München (DE)