(19)

(11)

EP 0 624 217 A1

(12)

(43) Date of publication: 17.11.1994 Bulletin 1994/46 (21) Application number: 93902413.0 (22) Date of filing: 19.01.1993

(51) International Patent Classification (IPC):  E02D 7/ 10( . ) E02D 7/ 14( . ) (86) International application number: PCT/GB1993/000114 (87) International publication number: WO 1993/014271 (22.07.1993 Gazette 1993/18)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 21.01.1992 GB 19920001185 (71) Applicant: BSP INTERNATIONAL FOUNDATIONS LIMITED Great Blakenham, Suffolk IP6 OJD (GB)	(72) Inventor: HOLLOWAY, John William Paul Claydon, Ipswich, Suffolk IP6 0DX (GB) (74) Representative: Dummett, Thomas Ian Peter  Dummett Copp & Co. 25 The Square Martlesham Heath, Ipswich, Suffolk IP5 7SL Martlesham Heath, Ipswich, Suffolk IP5 7SL (GB)