(19)

(11)

EP 1 485 655 A1

(12)

(43) Date of publication: 15.12.2004 Bulletin 2004/51 (21) Application number: 03712332.0 (22) Date of filing: 07.03.2003

(51) International Patent Classification (IPC)7: F24D 19/10 (86) International application number: PCT/GB2003/000994 (87) International publication number: WO 2003/074943 (12.09.2003 Gazette 2003/37)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR Designated Extension States: AL LT LV MK (30) Priority: 07.03.2002 GB 0205420 07.03.2002 GB 0205421 (71) Applicant: Brittech Controls Europe Ltd. Bickleigh PL6 7JX (GB)	(72) Inventor: LIAO, Zaiyi,Blding Res. Establishment Watford WD25 9XX (GB) (74) Representative: Weitzel, David Stanley et al Brookes Batchellor LLP102-108 Clerkenwell Road London EC1M 5SA London EC1M 5SA (GB)