(19)

(11)

EP 1 646 274 A1

(12)

(43) Date of publication: 19.04.2006 Bulletin 2006/16 (21) Application number: 04743418.8 (22) Date of filing: 15.07.2004

(51) International Patent Classification (IPC):  A01B 13/02(1968.09) A01B 49/02(1968.09) (86) International application number: PCT/GB2004/003078 (87) International publication number: WO 2005/006834 (27.01.2005 Gazette 2005/04)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR (30) Priority: 15.07.2003 GB 0316472 (71) Applicant: Grimme (UK) Limited Boston, Lincolnshire PE20 3PS (GB)	(72) Inventor: WHITE, Barry Vernon Boston, Lincolnshire PE21 9PH (GB) (74) Representative: Russell-Rayner, Albert Patrick  Business Centre West, Avenue One, Business Park Letchworth Garden City, Hertfordshire SG6 2HB Letchworth Garden City, Hertfordshire SG6 2HB (GB)