(19)

(11)

EP 0 876 092 A1

(12)

(43) Date of publication: 11.11.1998 Bulletin 1998/46 (21) Application number: 97900838.0 (22) Date of filing: 14.01.1997

(51) International Patent Classification (IPC):  A01G 23/ 091( . ) (86) International application number: PCT/SE1997/000028 (87) International publication number: WO 1997/025855 (24.07.1997 Gazette 1997/32)

(84) Designated Contracting States: FI SE (30) Priority: 16.01.1996 SE 19960000136 (71) Applicant: SANDVIK AKTIEBOLAG 811 81 Sandviken (SE)	(72) Inventor: LÖFGREN, Per-Olaf S-820 11 Vallsta (SE) (74) Representative: Taquist, Lennart  Sandvik AB Patents & Licences Fack 811 81 Sandviken 1 811 81 Sandviken 1 (SE)