(19)

(11)

EP 0 968 337 A1

(12)

(43) Date of publication: 05.01.2000 Bulletin 2000/01 (21) Application number: 98909621.9 (22) Date of filing: 12.03.1998

(51) International Patent Classification (IPC)7: E03D 9/052 (86) International application number: PCT/GB9800/755 (87) International publication number: WO 9841/702 (24.09.1998 Gazette 1998/38)

(84) Designated Contracting States: DE FR IE (30) Priority: 14.03.1997 GB 9705328 (71) Applicant: Topen, John Swan Inchture, Perthshire PH14 9RN (GB)	(72) Inventor: Topen, John Swan Inchture, Perthshire PH14 9RN (GB) (74) Representative: Kerr, Sheila Agnes Fife et al Cruikshank & Fairweather,19 Royal Exchange Square Glasgow G1 3AE Glasgow G1 3AE (GB)