(19)

(11)

EP 0 756 654 A1

(12)

(43) Date of publication: 05.02.1997 Bulletin 1997/06 (21) Application number: 95915709.0 (22) Date of filing: 11.04.1995

(51) International Patent Classification (IPC):  E01C 19/ 40( . ) E04G 21/ 10( . ) E04F 21/ 24( . ) (86) International application number: PCT/BE1995/000034 (87) International publication number: WO 1995/028525 (26.10.1995 Gazette 1995/46)

(84) Designated Contracting States: AT BE CH DE ES FR GB IT LI NL (30) Priority: 19.04.1994 BE 19940000398 (71) Applicant: Casters, François 3660 Opglabbeek (BE)	(72) Inventor: Casters, François 3660 Opglabbeek (BE) (74) Representative: Donné, Eddy  Bureau M.F.J. Bockstael nv Arenbergstraat 13 2000 Antwerpen 2000 Antwerpen (BE)