(19)

(11)

EP 4 288 617 A1

(12)

(43) Date of publication: 13.12.2023 Bulletin 2023/50 (21) Application number: 21925052.9 (22) Date of filing: 08.04.2021

(51) International Patent Classification (IPC):  E04B 2/74(2006.01) E04B 1/38(2006.01) E04B 2/58(2006.01) E04B 2/76(2006.01) E04B 1/21(2006.01) E04B 2/56(2006.01) E04B 2/62(2006.01) (52) Cooperative Patent Classification (CPC): H02G 3/386; E04B 1/02; E04B 2001/2463; E04B 1/4114; E04C 2/46; E04C 2/384; E04C 2/386; E04C 2/388; E04C 2/521; E04C 2/526 (86) International application number: PCT/US2021/026490 (87) International publication number: WO 2022/169471 (11.08.2022 Gazette 2022/32)

(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: 05.02.2021 US 202117168890 (71) Applicant: MW Enterprises LLC Portland, OR 97229 (US)	(72) Inventor: MAY, Joshua Portland, OR 97204 (US) (74) Representative: Maidment, Marc  Albright IP Limited County House Bayshill Road Cheltenham, Glos. GL50 3BA Cheltenham, Glos. GL50 3BA (GB)