(19)

(11)

EP 0 078 816 A1

(12)

(43) Date of publication: 18.05.1983 Bulletin 1983/20 (21) Application number: 82901359.0 (22) Date of filing: 11.05.1982

(51) International Patent Classification (IPC):  E03F 3/ 04( . ) F16L 55/ 179( . ) F16L 55/ 165( . ) (86) International application number: PCT/GB1982/000140 (87) International publication number: WO 1982/004086 (25.11.1982 Gazette 1982/28)

(84) Designated Contracting States: AT BE DE FR GB NL SE (30) Priority: 12.05.1981 GB 19810014529 (71) Applicant: HAXEY ENGINEERING LIMITED Doncaster, South YorkshireDN 9 2HH (GB)	(72) Inventor: RICE, Nigel Leonard Near Doncaster South Yorkshire (GB)