(19)

(11)

EP 3 787 757 A1

(12)

(43) Date of publication: 10.03.2021 Bulletin 2021/10 (21) Application number: 19723193.9 (22) Date of filing: 03.05.2019

(51) International Patent Classification (IPC):  A62B 9/04(2006.01) A62B 25/00(2006.01) (86) International application number: PCT/GB2019/051241 (87) International publication number: WO 2019/211627 (07.11.2019 Gazette 2019/45)

(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: 04.05.2018 GB 201807348 (71) Applicant: Draeger Safety UK Limited Blyth, Northumberland NE24 4RG (GB)	(72) Inventors: MCKAY, Timothy Northumberland NE63 9EJ (GB) HANNARD, Evan Tyne and Wear NE34 7AH (GB) (74) Representative: Haseltine Lake Kempner LLP  Cheapside House 138 Cheapside London EC2V 6BJ London EC2V 6BJ (GB)