(19)

(11)

EP 4 337 347 A1

(12)

(43) Date of publication: 20.03.2024 Bulletin 2024/12 (21) Application number: 22808074.3 (22) Date of filing: 05.05.2022

(51) International Patent Classification (IPC):  A63B 23/04(2006.01) A63B 21/005(2006.01) A63B 21/00(2006.01) A63B 23/035(2006.01) (52) Cooperative Patent Classification (CPC): A63B 21/00196; A63B 21/4015; A63B 2071/0683; A63B 2225/20; A63B 2225/50; A63B 23/04; A63B 24/0087 (86) International application number: PCT/US2022/027894 (87) International publication number: WO 2022/240652 (17.11.2022 Gazette 2022/46)

(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: 10.05.2021 US 202117316074 (71) Applicant: Washington, Valdemar L. Flint, Michigan 48501 (US)	(72) Inventor: Washington, Valdemar L. Flint, Michigan 48501 (US) (74) Representative: J A Kemp LLP  80 Turnmill Street London EC1M 5QU London EC1M 5QU (GB)