(19)

(11)

EP 0 111 533 A1

(12)

(43) Date of publication: 27.06.1984 Bulletin 1984/26 (21) Application number: 83901959.0 (22) Date of filing: 13.06.1983

(51) International Patent Classification (IPC):  E02F 3/ 345( . ) E02F 3/ 96( . ) E02F 3/ 36( . ) (86) International application number: PCT/SE1983/000243 (87) International publication number: WO 1984/000043 (05.01.1984 Gazette 1984/01)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 16.06.1982 SE 19820003734 (71) Applicant: TRYGGSTAD, Jan-Ake S-870 33 Docksta (SE)	(72) Inventor: TRYGGSTAD, Jan-Ake S-870 33 Docksta (SE)