(19)

(11)

EP 1 373 803 A1

(12)

(43) Date of publication: 02.01.2004 Bulletin 2004/01 (21) Application number: 02714637.2 (22) Date of filing: 28.03.2002

(51) International Patent Classification (IPC)7: F24D 3/10 (86) International application number: PCT/NL2002/000203 (87) International publication number: WO 2002/079696 (10.10.2002 Gazette 2002/41)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR Designated Extension States: AL LT LV MK RO SI (30) Priority: 02.04.2001 NL 1017756 26.09.2001 NL 1019043 (71) Applicant: SPIRO RESEARCH B.V. NL-5705 BK Helmond (NL)	(72) Inventor: ROFFELSEN, Franciscus NL-5707 CM Helmond (NL) (74) Representative: Prins, Adrianus Willem et al Vereenigde,Nieuwe Parklaan 97 2587 BN Den Haag 2587 BN Den Haag (NL)