(19)

(11)

EP 0 894 166 A1

(12)

(43) Date of publication: 03.02.1999 Bulletin 1999/05 (21) Application number: 97919554.0 (22) Date of filing: 25.04.1997

(51) International Patent Classification (IPC):  E01F 13/ 08( . ) (86) International application number: PCT/GB1997/001146 (87) International publication number: WO 1997/041307 (06.11.1997 Gazette 1997/47)

(84) Designated Contracting States: DE ES FR GB IT (30) Priority: 26.04.1996 GB 19960008692 (71) Applicant: Bowles, Alexander Gary Egerton, Bolton BL7 9TL (GB)	(72) Inventor: Bowles, Alexander Gary Egerton, Bolton BL7 9TL (GB) (74) Representative: Hughes, Brian Patrick  Brian Hughes & Co. Letterbox Cottage Friezley Lane Cranbrook, Kent TN17 2LL Cranbrook, Kent TN17 2LL (GB)