(19)

(11)

EP 3 762 112 A1

(12)

(43) Date of publication: 13.01.2021 Bulletin 2021/02 (21) Application number: 18908482.5 (22) Date of filing: 13.07.2018

(51) International Patent Classification (IPC):  A63B 22/02(2006.01) A63B 22/12(2006.01) A63B 21/015(2006.01) A63B 23/035(2006.01) (86) International application number: PCT/US2018/041962 (87) International publication number: WO 2019/172949 (12.09.2019 Gazette 2019/37)

(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: 04.03.2018 US 201862638176 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)