(19)

(11)

EP 4 176 220 A1

(12)

(43) Date of publication: 10.05.2023 Bulletin 2023/19 (21) Application number: 21835948.7 (22) Date of filing: 17.06.2021

(51) International Patent Classification (IPC):  F41G 11/00(2006.01) F41G 1/387(2006.01) F41G 1/40(2006.01) F41G 1/26(2006.01) F41G 1/42(2006.01) (52) Cooperative Patent Classification (CPC): F41G 1/26 (86) International application number: PCT/AU2021/050625 (87) International publication number: WO 2022/006618 (13.01.2022 Gazette 2022/02)

(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: 06.07.2020 AU 2020902303 (71) Applicant: Mckenzie, Hugh Malcolm Roy Port Macquarie, NSW 2444 (AU)	(72) Inventor: Mckenzie, Hugh Malcolm Roy Port Macquarie, NSW 2444 (AU) (74) Representative: Wynne-Jones IP Limited  Southgate House Southgate Street Gloucester, Gloucestershire GL1 1UB Gloucester, Gloucestershire GL1 1UB (GB)