(19)

(11)

EP 1 157 240 A1

(12)

(43) Date of publication: 28.11.2001 Bulletin 2001/48 (21) Application number: 99972299.4 (22) Date of filing: 11.11.1999

(51) International Patent Classification (IPC)7: F24D 3/10, F28D 20/00 (86) International application number: PCT/NL9900/691 (87) International publication number: WO 0029/789 (25.05.2000 Gazette 2000/21)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE Designated Extension States: AL LT LV MK RO SI (30) Priority: 13.11.1998 NL 1010546 (71) Applicant: Wesseling, Johannes Petrus 1723 WX Noord-Scharwoude (NL)	(72) Inventor: Wesseling, Johannes Petrus 1723 WX Noord-Scharwoude (NL) (74) Representative: Koomen, M.J.I.  Kennemerstraatweg 35-37 1814 GB Alkmaar 1814 GB Alkmaar (NL)