(19)

(11)

EP 0 409 820 A1

(12)

(43) Date of publication: 30.01.1991 Bulletin 1991/05 (21) Application number: 86904967.0 (22) Date of filing: 25.07.1986

(51) International Patent Classification (IPC):  B60C 11/ 16( . ) (86) International application number: PCT/SE1986/000343 (87) International publication number: WO 1987/000488 (29.01.1987 Gazette 1987/03)

(84) Designated Contracting States: AT DE FR GB (30) Priority: 25.07.1985 SE 19850003589 (71) Applicant: GULLBRANDSSON, Bo Olav S-412 59 Göteborg (SE)	(72) Inventor: GULLBRANDSSON, Bo Olav S-412 59 Göteborg (SE) (74) Representative: Westerlund, Christer, et al  L.A. Groth & Co Patentbyra AB, P.O. Box 6107 S-102 32 Stockholm S-102 32 Stockholm (SE)