(19)

(11)

EP 0 120 869 A1

(12)

(43) Date of publication: 10.10.1984 Bulletin 1984/41 (21) Application number: 83901441.0 (22) Date of filing: 06.05.1983

(51) International Patent Classification (IPC):  E04D 15/ 04( . ) (86) International application number: PCT/SE1983/000188 (87) International publication number: WO 1983/004065 (24.11.1983 Gazette 1983/27)

(84) Designated Contracting States: AT BE DE FR GB LU NL SE (30) Priority: 06.05.1982 SE 19820002852 (71) Applicant: MASKINGRUPPEN 82 AB S-183 50 Täby (SE)	(72) Inventor: PETTERSSON, Per Ove S-183 50 Täby (SE) (74) Representative: Nyberg, Bengt  Sture V Moberg AB Kungstensgatan 48 S-113 59 Stockholm S-113 59 Stockholm (SE)