(19)

(11)

EP 0 215 786 A1

(12)

(43) Date of publication: 01.04.1987 Bulletin 1987/14 (21) Application number: 85902706.0 (22) Date of filing: 20.05.1985

(51) International Patent Classification (IPC):  E03C 1/ 262( . ) (86) International application number: PCT/SE1985/000209 (87) International publication number: WO 1985/005390 (05.12.1985 Gazette 1985/26)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 23.05.1984 SE 19840002773 (71) Applicant: ANDERSSON, Jan S-753 23 Uppsala (SE)	(72) Inventor: ANDERSSON, Jan S-753 23 Uppsala (SE)