(19)

(11)

EP 3 436 750 A1

(12)

(43) Date of publication: 06.02.2019 Bulletin 2019/06 (21) Application number: 17723731.0 (22) Date of filing: 30.03.2017

(51) International Patent Classification (IPC):  F24F 13/14(2006.01) F24F 11/04(2019.02) F16K 1/20(2006.01) F24F 13/10(2006.01) F16K 1/16(2006.01) (86) International application number: PCT/GB2017/050904 (87) International publication number: WO 2017/168162 (05.10.2017 Gazette 2017/40)

(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: MA MD (30) Priority: 31.03.2016 GB 201605515 (71) Applicant: Hudson, Raymond John Henley-on-Thames, Oxfordshire RG9 1UZ (GB)	(72) Inventor: Hudson, Raymond John Henley-on-Thames, Oxfordshire RG9 1UZ (GB) (74) Representative: CSY London  10 Fetter Lane London EC4A 1BR London EC4A 1BR (GB)