(19)

(11)

EP 0 964 615 A1

(12)

(43) Date of publication: 22.12.1999 Bulletin 1999/51 (21) Application number: 97945104.0 (22) Date of filing: 03.10.1997

(51) International Patent Classification (IPC):  A01K 1/ 00( . ) (86) International application number: PCT/NZ1997/000128 (87) International publication number: WO 1998/017101 (30.04.1998 Gazette 1998/17)

(84) Designated Contracting States: GB IE (30) Priority: 23.10.1996 NZ 19960299626 (71) Applicant: Leask Construction Services Limited Morrinsville 2251 (NZ)	(72) Inventor: LEASK, David, Samuel Morrinsville 2251 (NZ) (74) Representative: Jackson, David Spence  REDDIE & GROSE 16, Theobalds Road London, WC1X 8PL London, WC1X 8PL (GB)