(19)

(11)

EP 0 585 294 A1

(12)

(43) Date of publication: 09.03.1994 Bulletin 1994/10 (21) Application number: 92910369.0 (22) Date of filing: 13.05.1992

(51) International Patent Classification (IPC):  E01F 9/ 011( . ) E04H 12/ 08( . ) (86) International application number: PCT/SE1992/000313 (87) International publication number: WO 1992/020888 (26.11.1992 Gazette 1992/29)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI NL (30) Priority: 14.05.1991 SE 19910001452 (71) Applicant: AB SKELLEFTEA BYGGPLANERING S-931 51 Skelleftea (SE)	(72) Inventor: LINDGREN, Karl-Ingvar S-931 51 Skellefte (SE) (74) Representative: Onn, Thorsten, et al  AB STOCKHOLMS PATENTBYRA Box 23101 S-104 35 Stockholm S-104 35 Stockholm (SE)