(19)

(11)

EP 0 065 551 A1

(12)

(43) Date of publication: 01.12.1982 Bulletin 1982/48 (21) Application number: 81903238.0 (22) Date of filing: 30.11.1981

(51) International Patent Classification (IPC):  B60T 11/ 30( . ) F16D 65/ 14( . ) F16L 57/ 00( . ) F16D 65/ 00( . ) F16K 27/ 08( . ) (86) International application number: PCT/GB1981/000259 (87) International publication number: WO 1982/001856 (10.06.1982 Gazette 1982/15)

(84) Designated Contracting States: AT CH DE FR LI LU NL SE (30) Priority: 28.11.1980 GB 19800038253 (71) Applicant: Witt, John Edward West Byfleet Surrey (GB)	(72) Inventor: Witt, John Edward West Byfleet Surrey (GB) (74) Representative: Williams, John Francis  WILLIAMS, POWELL & ASSOCIATES 34 Tavistock Street London WC2E 7PB London WC2E 7PB (GB)