(19)

(11)

EP 0 932 730 A1

(12)

(43) Date of publication: 04.08.1999 Bulletin 1999/31 (21) Application number: 96941238.0 (22) Date of filing: 21.10.1996

(51) International Patent Classification (IPC):  E02F 9/ 22( . ) (86) International application number: PCT/SE1996/001346 (87) International publication number: WO 1998/017873 (30.04.1998 Gazette 1998/17)

(84) Designated Contracting States: AT DE DK ES FI FR GB IT SE (71) Applicant: AB ALÖ-MASKINER 901 37 Umea (SE)	(72) Inventor: LINDBERG, Arne S-905 91 Umea (SE) (74) Representative: Onn, Thorsten, et al  Stockholms Patentbyra P.O. Box 23101 104 35 Stockholm 104 35 Stockholm (SE)