(19)

(11)

EP 4 157 003 A1

(12)

(43) Date of publication: 05.04.2023 Bulletin 2023/14 (21) Application number: 21730261.1 (22) Date of filing: 27.05.2021

(51) International Patent Classification (IPC):  A41D 13/05(2006.01) A61F 11/06(2006.01) A41D 13/11(2006.01) (52) Cooperative Patent Classification (CPC): A41D 13/05; A61F 11/06; A41D 13/1161 (86) International application number: PCT/GB2021/000060 (87) International publication number: WO 2021/245367 (09.12.2021 Gazette 2021/49)

(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: 01.06.2020 GB 202008170 (71) Applicant: The Secretary of State for Defence Salisbury, Wiltshire SP4 0JQ (GB)	(72) Inventor: SKELTON, Colin Salisbury, Wiltshire SP4 0JQ (GB) (74) Representative: Phillips, Thomas Edward  Ministry of Defence Defence Intellectual Property Rights Poplar 2 No. 2214 MoD Abbey Wood (South) Bristol BS34 8JH Bristol BS34 8JH (GB)