(19)

(11)

EP 1 099 083 A1

(12)

(43) Date of publication: 16.05.2001 Bulletin 2001/20 (21) Application number: 99933097.0 (22) Date of filing: 22.07.1999

(51) International Patent Classification (IPC)7: F24H 1/00, F24H 3/04 (86) International application number: PCT/IE9900/075 (87) International publication number: WO 0005/540 (03.02.2000 Gazette 2000/05)

(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: 23.07.1998 IE 980616 (71) Applicant: OGLESBY & BUTLER,RESEARCH & DEVELOPMENT LIMITED Carlow (IE)	(72) Inventors: OGLESBY, Alfred, Peter Carlow (IE) OGLESBY, John, Paul Carlow (IE) (74) Representative: Gorman, Francis Fergus et al F. F. Gorman & Co.54, Merrion Square Dublin 2 Dublin 2 (IE)