(19)

(11)

EP 0 726 996 A1

(12)

(43) Date of publication: 21.08.1996 Bulletin 1996/34 (21) Application number: 95900339.0 (22) Date of filing: 28.10.1994

(51) International Patent Classification (IPC):  E04G 11/ 04( . ) (86) International application number: PCT/SE1994/001016 (87) International publication number: WO 1995/012727 (11.05.1995 Gazette 1995/20)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI NL PT (30) Priority: 01.11.1993 SE A 9303576 (71) Applicant: H.G.TECH AB S-720 11 Västeras (SE)	(72) Inventor: LARSSON, Hans, Gunnar S-724 60 VästerAs (SE) (74) Representative: Lautmann, Kurt O.  KURT LAUTMANNS PATENTBYRA AB Box 245 691 25 Karlskoga 691 25 Karlskoga (SE)