(19)

(11)

EP 1 144 807 A1

(12)

(43) Date of publication: 17.10.2001 Bulletin 2001/42 (21) Application number: 00968120.6 (22) Date of filing: 13.10.2000

(51) International Patent Classification (IPC)7: F01D 1/38, F02C 3/16 (86) International application number: PCT/GB0003/972 (87) International publication number: WO 0129/376 (26.04.2001 Gazette 2001/17)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL Designated Extension States: AL LT LV MK RO SI (30) Priority: 15.10.1999 GB 9924391 (71) Applicant: Duncan Research and Development Limited Totnes,Devon TQ9 7RZ (GB)	(72) Inventor: DUNCAN, David,Duncan Research & Development Ltd Harberton,Totnes, Devon TQ9 7RZ (GB) (74) Representative: Craske, Stephen Allan et al Craske & Co.Patent Law Chambers15 Queens Terrace ExeterSouth Devon EX4 4HJ ExeterSouth Devon EX4 4HJ (GB)