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(11)

EP 4 069 383 A1

(12)

(43) Date of publication: 12.10.2022 Bulletin 2022/41 (21) Application number: 20896732.3 (22) Date of filing: 07.12.2020

(51) International Patent Classification (IPC):  A63B 53/00(2015.01) A63B 53/06(2015.01) A63B 53/04(2015.01) (52) Cooperative Patent Classification (CPC): A63B 53/0466; A63B 2053/0491; A63B 53/0408; A63B 53/0412; A63B 53/0433; A63B 53/0437 (86) International application number: PCT/US2020/070874 (87) International publication number: WO 2021/113877 (10.06.2021 Gazette 2021/23)

(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: 06.12.2019 US 201962944968 P 02.09.2020 US 202063073849 P 10.09.2020 US 202063076859 P (71) Applicant: Karsten Manufacturing Corporation Phoenix, AZ 85029 (US)

(72) Inventors: MILLEMAN, Travis D. Phoenix, Arizona 85029 (US) MORALES, Eric J. Phoenix, Arizona 85029 (US) STOKKE, Ryan M. Phoenix, Arizona 85029 (US) (74) Representative: Mewburn Ellis LLP  Aurora Building Counterslip Bristol BS1 6BX Bristol BS1 6BX (GB)