(19)

(11)

EP 0 494 133 A1

(12)

(43) Date of publication: 15.07.1992 Bulletin 1992/29 (21) Application number: 89910967.0 (22) Date of filing: 25.09.1989

(51) International Patent Classification (IPC):  A01D 34/ 42( . ) A01D 43/ 10( . ) A01D 34/ 535( . ) (86) International application number: PCT/SE1989/000513 (87) International publication number: WO 1991/003926 (04.04.1991 Gazette 1991/08)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (71) Applicant: SUNDBERG, Stig S-818 00 Valbo (SE)	(72) Inventor: SUNDBERG, Stig S-818 00 Valbo (SE) (74) Representative: Bjerkén, Jarl Hakan  Bjerkéns Patentbyra KB P.O.Box 1274 S-801 37 Gävle S-801 37 Gävle (SE)