(19)

(11)

EP 3 997 374 A1

(12)

(43) Date of publication: 18.05.2022 Bulletin 2022/20 (21) Application number: 19832174.7 (22) Date of filing: 18.12.2019

(51) International Patent Classification (IPC):  F16L 37/092(2006.01) G02B 6/44(2006.01) F16L 37/10(2006.01) (52) Cooperative Patent Classification (CPC): G02B 6/4459; F16L 37/0925; F16L 37/0927; F16L 37/10; G02B 6/4464; G02B 6/52 (86) International application number: PCT/GB2019/053602 (87) International publication number: WO 2021/005319 (14.01.2021 Gazette 2021/02)

(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: 10.07.2019 GB 201909906 (71) Applicant: Reliance Worldwide Corporation (UK) Limited West Drayton, Middlesex UB7 8JL (GB)	(72) Inventor: ANSELL, Glen Edgware Middlesex HA8 8HF (GB) (74) Representative: Boult Wade Tennant LLP  Salisbury Square House 8 Salisbury Square London EC4Y 8AP London EC4Y 8AP (GB)