(19)

(11)

EP 0 282 500 A1

(12)

(43) Date of publication: 21.09.1988 Bulletin 1988/38 (21) Application number: 87904631.0 (22) Date of filing: 09.06.1987

(51) International Patent Classification (IPC):  A01C 7/ 00( . ) (86) International application number: PCT/SE1987/000273 (87) International publication number: WO 1988/001831 (24.03.1988 Gazette 1988/07)

(84) Designated Contracting States: DE FR GB (30) Priority: 09.09.1986 SE 19860003764 (71) Applicant: NIELSEN, Evald S-544 00 Hjo (SE)	(72) Inventor: NIELSEN, Evald S-544 00 Hjo (SE) (74) Representative: Adéll, Bengt-Ingvar  Bellevuegatan 5 B S-554 46 Jönköping S-554 46 Jönköping (SE)