(19)

(11)

EP 2 499 433 A2

(12)

(88) Date of publication A3: 29.03.2012 (43) Date of publication: 19.09.2012 Bulletin 2012/38 (21) Application number: 10796108.8 (22) Date of filing: 10.11.2010

(51) International Patent Classification (IPC):  F24D 3/08(2006.01) F24D 3/18(2006.01) F24D 19/10(2006.01) (86) International application number: PCT/GB2010/051867 (87) International publication number: WO 2011/058350 (19.05.2011 Gazette 2011/20)

(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 (30) Priority: 10.11.2009 GB 0919636 (71) Applicant: Smith's Environmental Products Limited Chelmsford Essex CM3 5UW (GB)	(72) Inventor: WEBSTER, Gary Stanton Essex CM3 4EZ (GB) (74) Representative: Walder, Jeremy Thomas  Sanderson & Co., 34, East Stockwell Street Colchester, Essex CO1 1ST Colchester, Essex CO1 1ST (GB)