(19)

(11)

EP 0 584 172 A1

(12)

(43) Date of publication: 02.03.1994 Bulletin 1994/09 (21) Application number: 92910401.0 (22) Date of filing: 18.05.1992

(51) International Patent Classification (IPC):  E03D 9/ 02( . ) E03D 9/ 03( . ) (86) International application number: PCT/GB1992/000896 (87) International publication number: WO 1992/020876 (26.11.1992 Gazette 1992/29)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IT LI LU MC NL SE (30) Priority: 17.05.1991 GB 19910010746 (71) Applicant: BROOKLINE DELTA LIMITED London E2 7HR (GB)	(72) Inventor: DAVIS, Raymond, Christopher London E2 7AL (GB) (74) Representative: Williams, John Francis  WILLIAMS, POWELL & ASSOCIATES 34 Tavistock Street London WC2E 7PB London WC2E 7PB (GB)