(19)

(11)

EP 0 865 544 A1

(12)

(43) Date of publication: 23.09.1998 Bulletin 1998/39 (21) Application number: 96918923.0 (22) Date of filing: 20.06.1996

(51) International Patent Classification (IPC):  E03C 1/ 08( . ) F16L 55/ 027( . ) (86) International application number: PCT/NL1996/000254 (87) International publication number: WO 1997/020999 (12.06.1997 Gazette 1997/25)

(84) Designated Contracting States: AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 04.12.1995 NL 19951001810 (71) Applicant: Lieven, Theodorus Johannes Gerhardus 7534 EK Enschede (NL)	(72) Inventor: Lieven, Theodorus Johannes Gerhardus 7534 EK Enschede (NL) (74) Representative: Dokter, Hendrik Daniel, et al  Octrooibureau Dokter, P.O. Box 657 7300 AR Apeldoorn 7300 AR Apeldoorn (NL)