(19)

(11)

EP 0 316 399 A1

(12)

(43) Date of publication: 24.05.1989 Bulletin 1989/21 (21) Application number: 88904683.0 (22) Date of filing: 15.04.1988

(51) International Patent Classification (IPC):  B66C 13/ 12( . ) (86) International application number: PCT/SE1988/000195 (87) International publication number: WO 1988/009304 (01.12.1988 Gazette 1988/26)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 19.05.1987 SE 19870002053 (71) Applicant: AB TICO S-801 33 Gävle (SE)	(72) Inventor: GUSTAFSSON, Paul S-801 33 Gävle (SE) (74) Representative: Bjerkén, Jarl Hakan  Bjerkéns Patentbyra KB P.O.Box 1274 S-801 37 Gävle S-801 37 Gävle (SE)