(19)

(11)

EP 4 277 714 A1

(12)

(43) Date of publication: 22.11.2023 Bulletin 2023/47 (21) Application number: 22740268.2 (22) Date of filing: 18.01.2022

(51) International Patent Classification (IPC):  A63B 53/14(2015.01) B29C 45/16(2006.01) B29C 43/02(2006.01) B29K 21/00(2006.01) (52) Cooperative Patent Classification (CPC): A63B 53/14; A63B 60/16; A63B 60/46 (86) International application number: PCT/US2022/070228 (87) International publication number: WO 2022/155684 (21.07.2022 Gazette 2022/29)

(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: 18.01.2021 US 202163138729 P (71) Applicant: Karsten Manufacturing Corporation Phoenix, AZ 85029 (US)	(72) Inventor: KULTALA, David Phoenix, Arizona 85029 (US) (74) Representative: Mewburn Ellis LLP  Aurora Building Counterslip Bristol BS1 6BX Bristol BS1 6BX (GB)