(19)

(11)

EP 1 011 304 A2

(12)

(88) Date of publication A3: 07.01.1999 (43) Date of publication: 28.06.2000 Bulletin 2000/26 (21) Application number: 98914168.4 (22) Date of filing: 23.03.1998

(51) International Patent Classification (IPC)7: A01C 5/06 (86) International application number: PCT/NZ9800/043 (87) International publication number: WO 9842/175 (01.10.1998 Gazette 1998/39)

(84) Designated Contracting States: DE FR GB IT (30) Priority: 25.03.1997 NZ 29949997 (71) Applicant: VIBRA BLADE (NEW ZEALAND) LIMITED Palmerston North (NZ)	(72) Inventor: TANNER, Errol, Robert Bainesse,Palmerston North (NZ) (74) Representative: Waldren, Robin Michael et al MARKS & CLERK,57-60 Lincoln's Inn Fields London WC2A 3LS London WC2A 3LS (GB)