(19)

(11)

EP 0 107 668 A1

(12)

(43) Date of publication: 09.05.1984 Bulletin 1984/19 (21) Application number: 83900450.0 (22) Date of filing: 20.01.1983

(51) International Patent Classification (IPC):  E04D 3/ 367( . ) (86) International application number: PCT/SE1983/000014 (87) International publication number: WO 1983/002474 (21.07.1983 Gazette 1983/17)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 20.01.1982 SE 19820000301 (71) Applicant: PETTERSSON, Per Ove S-183 50 Täby (SE)	(72) Inventor: PETTERSSON, Per Ove S-183 50 Täby (SE)