(19)

(11)

EP 0 956 404 A1

(12)

(43) Date of publication: 17.11.1999 Bulletin 1999/46 (21) Application number: 97950517.0 (22) Date of filing: 24.12.1997

(51) International Patent Classification (IPC):  E04B 7/ 20( . ) E04B 7/ 22( . ) (86) International application number: PCT/NL1997/000722 (87) International publication number: WO 1998/028504 (02.07.1998 Gazette 1998/26)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 24.12.1996 NL 19961004895 (71) Applicant: De Horsten Beheer B.V. 7941 XW Meppel (NL)	(72) Inventor: BLOEMEN, Johan NL-7944 AV Meppel (NL) (74) Representative: 't Jong, Bastiaan Jacobus, et al  Arnold & Siedsma, Advocaten en Octrooigemachtigden, Sweelinckplein 1 2517 GK Den Haag 2517 GK Den Haag (NL)