(19)

(11)

EP 0 281 566 A1

(12)

(43) Date of publication: 14.09.1988 Bulletin 1988/37 (21) Application number: 87900342.0 (22) Date of filing: 30.12.1986

(51) International Patent Classification (IPC):  H04L 5/ 16( . ) H04L 27/ 10( . ) (86) International application number: PCT/SE1986/000591 (87) International publication number: WO 1987/004311 (16.07.1987 Gazette 1987/15)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI NL SE (30) Priority: 03.01.1986 SE 19860000030 (71) Applicant: ATLET AB S-435 01 Mölnlycke (SE)	(72) Inventor: BERNDTSSON, Sievert S-435 00 Mölnlycke (SE) (74) Representative: Berglund, Gustav Arthur, et al  AWAPATENT AB, Box 5117 S-200 71 Malmö S-200 71 Malmö (SE)