(19)

(11)

EP 3 931 412 A1

(12)

(43) Date of publication: 05.01.2022 Bulletin 2022/01 (21) Application number: 19713605.4 (22) Date of filing: 27.02.2019

(51) International Patent Classification (IPC):  E04H 4/00(2006.01) E04H 4/10(2006.01) E04H 4/08(2006.01) A61H 33/00(2006.01) (52) Cooperative Patent Classification (CPC): A61H 33/00; E04H 4/0018; E04H 4/08; E04H 4/084; E04H 4/103; E04H 4/106 (86) International application number: PCT/US2019/019835 (87) International publication number: WO 2020/176083 (03.09.2020 Gazette 2020/36)

(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 (71) Applicant: Bullfrog International, L.C. Bluffdale, UT 84065 (US)	(72) Inventors: GUILFOYLE, Jeff San Diego, California 92117 (US) SJOBLOM, Dan Sandy, Utah 84092 (US) HALES, Eric Eagle Mountain, Utah 84005 (US) (74) Representative: Dentons UK and Middle East LLP  One Fleet Place London EC4M 7WS London EC4M 7WS (GB)