(19)

(11)

EP 2 307 818 A2

(12)

(88) Date of publication A3: 13.01.2011 (43) Date of publication: 13.04.2011 Bulletin 2011/15 (21) Application number: 09754149.4 (22) Date of filing: 28.05.2009

(51) International Patent Classification (IPC):  F24J 2/34(2006.01) F24D 17/00(2006.01) (86) International application number: PCT/GB2009/050586 (87) International publication number: WO 2009/144504 (03.12.2009 Gazette 2009/49)

(84) Designated Contracting States: 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 SE SI SK TR Designated Extension States: AL BA RS (30) Priority: 28.05.2008 GB 0809622 (71) Applicant: Akerman, David Strathclyde ML11 9YP (GB)	(72) Inventor: Akerman, David Strathclyde ML11 9YP (GB) (74) Representative: Harrison Goddard Foote et al 106 Hope Street Glasgow G2 6PH Glasgow G2 6PH (GB)