(19)

(11)

EP 4 121 712 A1

(12)

(43) Date of publication: 25.01.2023 Bulletin 2023/04 (21) Application number: 21771327.0 (22) Date of filing: 19.03.2021

(51) International Patent Classification (IPC):  F41G 1/30(2006.01) F41G 1/08(2006.01) F41G 1/06(2006.01) F41G 1/14(2006.01) (52) Cooperative Patent Classification (CPC): F41G 1/30; F41G 11/00; F41A 3/72 (86) International application number: PCT/US2021/023191 (87) International publication number: WO 2021/188917 (23.09.2021 Gazette 2021/38)

(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: 20.03.2020 US 202062992586 P (71) Applicant: Sheltered Wings, Inc. D/b/a/ Vortex Optics Barneveld, WI 53507 (US)	(72) Inventors: ROSEN, Michael Barneveld, WI 53507 (US) MORELL, Rob Barneveld, WI 53507 (US) HAMILTON, David, M. Barneveld, WI 53507 (US) (74) Representative: Barker Brettell LLP  100 Hagley Road Edgbaston Birmingham, West Midlands B16 8QQ Birmingham, West Midlands B16 8QQ (GB)