(19)

(11)

EP 0 362 199 A1

(12)

(43) Date of publication: 11.04.1990 Bulletin 1990/15 (21) Application number: 87906317.0 (22) Date of filing: 12.09.1987

(51) International Patent Classification (IPC):  E01C 19/ 10( . ) (86) International application number: PCT/IT1987/000081 (87) International publication number: WO 1988/008052 (20.10.1988 Gazette 1988/23)

(84) Designated Contracting States: BE CH DE FR GB LI NL SE (30) Priority: 16.04.1987 IT 19870003437 09.06.1987 IT 19870083384 03.07.1987 IT 19870060401 03.09.1987 IT 19870060428 (71) Applicant: MARINI S.P.A. I-48011 Alfonsine (IT)	(72) Inventors: CIPRIANI, Antonio I-40011 Alfonsine (IT) TORSELLO, Marino I-48100 Ravenna (IT) (74) Representative: D'Agostini, Giovanni, Dr.  D'AGOSTINI ORGANIZZAZIONE Via G. Giusti 17 I-33100 Udine I-33100 Udine (IT)