(19)

(11)

EP 1 114 281 A1

(12)

(43) Date of publication: 11.07.2001 Bulletin 2001/28 (21) Application number: 99946294.8 (22) Date of filing: 17.09.1999

(51) International Patent Classification (IPC)7: F24D 19/02 (86) International application number: PCT/GB9902/901 (87) International publication number: WO 0017/581 (30.03.2000 Gazette 2000/13)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 17.09.1998 GB 9820171 (71) Applicant: Davidson, Paul Macclesfield, Cheshire SK10 2UN (GB)	(72) Inventor: Davidson, Paul Macclesfield, Cheshire SK10 2UN (GB) (74) Representative: Harrison Goddard Foote  Tower House,Merrion Way Leeds LS2 8PA Leeds LS2 8PA (GB)