(19)

(11)

EP 0 466 797 A1

(12)

(43) Date of publication: 22.01.1992 Bulletin 1992/04 (21) Application number: 90906397.0 (22) Date of filing: 09.04.1990

(51) International Patent Classification (IPC):  E02F 3/ 36( . ) (86) International application number: PCT/SE1990/000243 (87) International publication number: WO 1990/012162 (18.10.1990 Gazette 1990/24)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 07.04.1989 SE 19890001244 (71) Applicant: INDEXATOR AB S-922 00 Vindeln (SE)	(72) Inventors: BERGSTRAND, Tomas S-920 14 Hällnäs (SE) JONSSON, Anders S-922 00 Vindeln (SE) JONSSON, Hans S-922 00 Vindeln (SE) (74) Representative: Onn, Thorsten, et al  AB STOCKHOLMS PATENTBYRA Box 23101 S-104 35 Stockholm S-104 35 Stockholm (SE)