(19)

(11)

EP 1 000 201 A1

(12)

(43) Date of publication: 17.05.2000 Bulletin 2000/20 (21) Application number: 98937636.3 (22) Date of filing: 31.07.1998

(51) International Patent Classification (IPC)7: E02D 29/14 (86) International application number: PCT/GB9802/312 (87) International publication number: WO 9906/640 (11.02.1999 Gazette 1999/06)

(84) Designated Contracting States: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE (30) Priority: 31.07.1997 GB 9716243 (71) Applicant: Stanton plc Stanton-by-DaleIlkestonDerbyshire DE7 4QU (GB)	(72) Inventors: SCOTT, Andrew WollatonNottingham NG8 2RF (GB) BROWN, Christopher DuffieldDerby DE56 4HA (GB) FINES, Peter BenniworthLincoln LN3 6JR (GB) (74) Representative: Powell, Timothy John  Eric Potter Clarkson,Park View House,58 The Ropewalk Nottingham NG1 5DD Nottingham NG1 5DD (GB)