(19)

(11)

EP 0 052 119 A1

(12)

(43) Date of publication: 26.05.1982 Bulletin 1982/21 (21) Application number: 81901287.0 (22) Date of filing: 22.05.1981

(51) International Patent Classification (IPC):  B66C 1/ 66( . ) (86) International application number: PCT/SE1981/000152 (87) International publication number: WO 1981/003323 (26.11.1981 Gazette 1981/28)

(84) Designated Contracting States: AT DE FR GB NL (30) Priority: 23.05.1980 SE 19800003888 (71) Applicant: AB BACKTEMANS PATENTER S-162 26 Vällingby (SE)	(72) Inventor: SIMONSEN, Wilfred S-186 00 Vallentuna (SE)