(19)

(11)

EP 0 980 484 A1

(12)

(43) Date of publication: 23.02.2000 Bulletin 2000/08 (21) Application number: 98921980.3 (22) Date of filing: 07.05.1998

(51) International Patent Classification (IPC)7: F16J 10/00 (86) International application number: PCT/SE9800/833 (87) International publication number: WO 9851/945 (19.11.1998 Gazette 1998/46)

(84) Designated Contracting States: BE DE ES FI FR GB IT NL (30) Priority: 09.05.1997 SE 9701733 (71) Applicant: Structo AB 688 29 Storfors (SE)	(72) Inventor: LARSSON, Göran S-688 29 Storfors (SE) (74) Representative: Johansson, Lars E.  Lars Johansson Patentbyra ABP.O. Box 68 801 02 Gävle 801 02 Gävle (SE)