(19)

(11)

EP 0 595 874 A1

(12)

(43) Date of publication: 11.05.1994 Bulletin 1994/19 (21) Application number: 92915350.0 (22) Date of filing: 13.07.1992

(51) International Patent Classification (IPC):  F16L 33/ 01( . ) F16L 33/ 34( . ) (86) International application number: PCT/GB1992/001271 (87) International publication number: WO 1993/002314 (04.02.1993 Gazette 1993/04)

(84) Designated Contracting States: DE ES FR IT (30) Priority: 24.07.1991 GB 19910015962 (71) Applicant: DUNLOP LIMITED London SW1P 2PL (GB)	(72) Inventor: WILLIAMS, John Stuart Grimsby DN32 0BT (GB) (74) Representative: Badger, John Raymond, et al  Dunlop Limited Group Patent Department P.O. Box 504 Erdington Birmingham B24 9QH Erdington Birmingham B24 9QH (GB)