(19)

(11)

EP 0 675 991 A1

(12)

(43) Date of publication: 11.10.1995 Bulletin 1995/41 (21) Application number: 94903191.0 (22) Date of filing: 29.11.1993

(51) International Patent Classification (IPC):  E01C 11/ 14( . ) E04F 15/ 14( . ) (86) International application number: PCT/SE1993/001026 (87) International publication number: WO 1994/013906 (23.06.1994 Gazette 1994/14)

(84) Designated Contracting States: AT BE CH DE DK FR GB IE IT LI LU MC NL SE (30) Priority: 17.12.1992 SE 19920003802 (71) Applicant: JÖNSSON, Sven-Gunnar S-231 96 Trelleborg (SE)	(72) Inventor: JÖNSSON, Sven-Gunnar S-231 96 Trelleborg (SE) (74) Representative: Bjerre, Nils B.J., et al  AWAPATENT AB, P.O. Box 5117 S-200 71 Malmö S-200 71 Malmö (SE)