(19)

(11)

EP 0 072 831 A1

(12)

(43) Date of publication: 02.03.1983 Bulletin 1983/09 (21) Application number: 82900576.0 (22) Date of filing: 23.02.1982

(51) International Patent Classification (IPC):  A01B 59/ 06( . ) B62D 49/ 02( . ) B60D 1/ 46( . ) (86) International application number: PCT/SE1982/000051 (87) International publication number: WO 1982/002814 (02.09.1982 Gazette 1982/21)

(84) Designated Contracting States: DE FR GB (30) Priority: 24.02.1981 SE 19810001194 (71) Applicant: LIDGREN, Jan-Henrik S-902 32 Umea (SE)	(72) Inventor: LIDGREN, Jan-Henrik S-902 32 Umea (SE)