(19)

(11)

EP 1 259 773 A1

(12)

(43) Date of publication: 27.11.2002 Bulletin 2002/48 (21) Application number: 01907928.4 (22) Date of filing: 28.02.2001

(51) International Patent Classification (IPC)7: F28D 7/00 (86) International application number: PCT/GB0100/850 (87) International publication number: WO 0106/5193 (07.09.2001 Gazette 2001/36)

(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: 01.03.2000 GB 0004935 (71) Applicant: Weedon, Geoffrey Gerald Twickenham,Middlesex TW2 5NU (GB)	(72) Inventor: Weedon, Geoffrey Gerald Twickenham,Middlesex TW2 5NU (GB) (74) Representative: Butler, Lance et al Barker Brettell10-12 Priests Bridge London SW15 5JE London SW15 5JE (GB)