(19)

(11)

EP 0 845 063 A1

(12)

(43) Date of publication: 03.06.1998 Bulletin 1998/23 (21) Application number: 96928516.0 (22) Date of filing: 19.08.1996

(51) International Patent Classification (IPC):  E01D 22/ 00( . ) (86) International application number: PCT/GB1996/002026 (87) International publication number: WO 1997/007289 (27.02.1997 Gazette 1997/10)

(84) Designated Contracting States: AT BE DE DK ES FR GB IE IT NL (30) Priority: 18.08.1995 GB 19950016995 18.04.1996 GB 19960008069 (71) Applicants: Protec Industrial Ltd. Maidstone, Kent ME17 3EH (GB) SSP Consulting Civil & Structural Engineers Ltd. Queensborough, Isle of Sheppey ME11 5JF (GB)	(72) Inventor: BOUGHTON, Brian, SSP Consulting Queenborough, Isle of Sheppey ME11 5JF (GB) (74) Representative: BROOKES & MARTIN  High Holborn House 52/54 High Holborn London, WC1V 6SE London, WC1V 6SE (GB)