(19)

(11)

EP 0 143 808 A1

(12)

(43) Date of publication: 12.06.1985 Bulletin 1985/24 (21) Application number: 84901765.0 (22) Date of filing: 27.04.1984

(51) International Patent Classification (IPC):  F16L 11/ 12( . ) (86) International application number: PCT/EP1984/000129 (87) International publication number: WO 1984/004574 (22.11.1984 Gazette 1984/27)

(84) Designated Contracting States: AT BE CH DE FR GB LI LU NL SE (30) Priority: 09.05.1983 DE 19830013720U (71) Applicant: ENITOR B.V. NL-9285 ZV Buitenpost (NL)	(72) Inventor: SCHOOTSTRA, Jan, Harm NL-9285 ZV Buitenpost (NL)