(19)

(11)

EP 2 917 581 A1

(12)

(43) Date of publication: 16.09.2015 Bulletin 2015/38 (21) Application number: 13771568.6 (22) Date of filing: 13.09.2013

(51) International Patent Classification (IPC):  F04B 43/12(2006.01) F04B 49/08(2006.01) F04B 49/06(2006.01) F04B 49/20(2006.01) (86) International application number: PCT/GB2013/052398 (87) International publication number: WO 2014/041361 (20.03.2014 Gazette 2014/12)

(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 (30) Priority: 14.09.2012 GB 201216462 (71) Applicant: Vapourtec Limited Bury St Edmunds, Suffolk IP28 6TS (GB)	(72) Inventors: GUTHRIE, Duncan Bury St Edmunds Suffolk IP28 6TS (GB) CLARKSON, Adrian Bury St Edmunds Suffolk IP28 6TS (GB) (74) Representative: Hodsdon, Stephen James et al Mewburn Ellis LLP City Tower 40 Basinghall Street London EC2V 5DE London EC2V 5DE (GB)