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(11)

EP 4 003 546 A1

(12)

(43) Date of publication: 01.06.2022 Bulletin 2022/22 (21) Application number: 20848010.3 (22) Date of filing: 31.07.2020

(51) International Patent Classification (IPC):  A63B 53/02(2015.01) A63B 53/06(2015.01) A63B 53/04(2015.01) (52) Cooperative Patent Classification (CPC): A63B 2209/00; A63B 2071/0602; A63B 2225/093; A63B 2225/09; A63B 53/023; A63B 53/047 (86) International application number: PCT/US2020/044627 (87) International publication number: WO 2021/022219 (04.02.2021 Gazette 2021/05)

(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: 31.07.2019 US 201962881271 P (71) Applicant: Karsten Manufacturing Corporation Phoenix, AZ 85029 (US)	(72) Inventors: GREER, Evan Phoenix, Arizona 85029 (US) CLARKE, Jacob Phoenix, Arizona 85029 (US) MORALES, Eric J. Phoenix, Arizona 85029 (US) STOKKE, Ryan M. Phoenix, Arizona 85029 (US) COLE, Eric V. Phoenix, Arizona 85029 (US) KULTALA, David S. Phoenix, Arizona 85029 (US) (74) Representative: Tombling, Adrian George  Withers & Rogers LLP 2 London Bridge London SE1 9RA London SE1 9RA (GB)