(19)

(11)

EP 1 230 482 A1

(12)

(43) Date of publication: 14.08.2002 Bulletin 2002/33 (21) Application number: 00976154.5 (22) Date of filing: 17.11.2000

(51) International Patent Classification (IPC)7: F04B 23/02 (86) International application number: PCT/GB0004/366 (87) International publication number: WO 0136/821 (25.05.2001 Gazette 2001/21)

(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: 17.11.1999 GB 9927086 (71) Applicant: BELLE ENGINEERING (SHEEN) LIMITED Nr. Buxton,Derbyshire SK17 0EU (GB)	(72) Inventor: FLETCHER, Stephen John Near TewkesburyGloucestershire GL20 7JN (GB) (74) Representative: McNeight, David Leslie et al McNeight & LawrenceRegent HouseHeaton Lane StockportCheshire SK4 1BS StockportCheshire SK4 1BS (GB)