(19)

(11)

EP 0 922 204 A1

(12)

(43) Date of publication: 16.06.1999 Bulletin 1999/24 (21) Application number: 97934839.0 (22) Date of filing: 04.08.1997

(51) International Patent Classification (IPC):  G05D 11/ 00( . ) (86) International application number: PCT/SE1997/001321 (87) International publication number: WO 1998/007010 (19.02.1998 Gazette 1998/07)

(84) Designated Contracting States: DE DK ES FI FR GB IT SE (30) Priority: 07.08.1996 SE 19960002943 (71) Applicant: Joelsson, Sören 805 95 Gävle (SE)	(72) Inventor: Joelsson, Sören 805 95 Gävle (SE) (74) Representative: Bjerkén, Jarl Hakan, et al  Bjerkéns Patentbyra KB P.O.Box 1274 801 37 Gävle 801 37 Gävle (SE)