(19)

(11)

EP 0 231 308 A1

(12)

(43) Date of publication: 12.08.1987 Bulletin 1987/33 (21) Application number: 86904828.0 (22) Date of filing: 10.07.1986

(51) International Patent Classification (IPC):  E03D 9/ 052( . ) (86) International application number: PCT/FI1986/000082 (87) International publication number: WO 1987/000879 (12.02.1987 Gazette 1987/04)

(84) Designated Contracting States: DE FR GB IT SE (30) Priority: 31.07.1985 FI 19850002960 (71) Applicant: OY GUY DESIGN AB SF-20780 Kaarina (FI)	(72) Inventor: LÖNNGREN, Guy-Christer SF-20780 Kaarina (FI)