(19)

(11)

EP 0 272 270 A1

(12)

(43) Date of publication: 29.06.1988 Bulletin 1988/26 (21) Application number: 86906362.0 (22) Date of filing: 13.10.1986

(51) International Patent Classification (IPC):  E01C 23/ 088( . ) (86) International application number: PCT/GB1986/000617 (87) International publication number: WO 1987/002398 (23.04.1987 Gazette 1987/09)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 16.10.1985 GB 19850025428 (71) Applicant: RAPITEX (HIGHWAYS) LIMITED Herefordshire HR6 ODH (GB)	(72) Inventor: LOUSADA, Anthony Greatwood Farm Wiltshire (GB) (74) Representative: Dunlop, Brian Kenneth Charles  c/o Wynne-Jones, Lainé & James 22 Rodney Road Cheltenham Gloucestershire GL50 1JJ Cheltenham Gloucestershire GL50 1JJ (GB)