(19)

(11)

EP 1 444 405 A1

(12)

(43) Date of publication: 11.08.2004 Bulletin 2004/33 (21) Application number: 01982611.4 (22) Date of filing: 13.11.2001

(51) International Patent Classification (IPC)7: E02F 5/10, E02F 3/06, E02F 3/10, E02F 3/20, E02F 5/00 (86) International application number: PCT/GB2001/005007 (87) International publication number: WO 2003/044286 (30.05.2003 Gazette 2003/22)

(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 (71) Applicant: Mastenbroek Ltd. Boston,Lincolnshire PE21 7JG (GB)	(72) Inventors: KELLY, Keith, Richard Nottinghamshire (GB) GEELHOED, Jack Lincolnshire PE21 7JG (GB) (74) Representative: Laight, Martin Harvey  W.H. Beck, Greener & Co.7 Stone BuildingsLincoln's Inn London WC2A 3SZ London WC2A 3SZ (GB)