(19)

(11)

EP 3 215 803 A1

(12)

(43) Date of publication: 13.09.2017 Bulletin 2017/37 (21) Application number: 14811950.6 (22) Date of filing: 06.11.2014

(51) International Patent Classification (IPC):  F42B 39/20(2006.01) (86) International application number: PCT/GB2014/053307 (87) International publication number: WO 2016/071658 (12.05.2016 Gazette 2016/19)

(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 (71) Applicant: EPA Manufacturing Limited Faldingworth, Market Rasen LN8 3SQ (GB)	(72) Inventor: PIERRINI, Peter Market Rasen Lincolnshire LN8 6AZ (GB) (74) Representative: Loven, Keith James  LOVEN Patents & Trademarks Limited 51 Wragby Road Sudbrooke Lincoln, Lincolnshire LN2 2QU Lincoln, Lincolnshire LN2 2QU (GB)