(19)

(11)

EP 0 087 450 A1

(12)

(43) Date of publication: 07.09.1983 Bulletin 1983/36 (21) Application number: 82902685.0 (22) Date of filing: 10.09.1982

(51) International Patent Classification (IPC):  E02B 15/ 04( . ) E02B 15/ 06( . ) (86) International application number: PCT/GB1982/000268 (87) International publication number: WO 1983/000890 (17.03.1983 Gazette 1983/07)

(84) Designated Contracting States: AT BE CH DE FR GB LI NL SE (30) Priority: 11.09.1981 GB 19810027502 (71) Applicant: WEST, John Watt Banffshire (GB)	(72) Inventor: WEST, John Watt Banffshire (GB) (74) Representative: Cook, Anthony John, et al  D. YOUNG & CO. 21 New Fetter Lane London EC4A 1DA London EC4A 1DA (GB)