(19)

(11)

EP 0 680 534 A1

(12)

(43) Date of publication: 08.11.1995 Bulletin 1995/45 (21) Application number: 93903205.0 (22) Date of filing: 20.01.1993

(51) International Patent Classification (IPC):  E01F 15/ 04( . ) (86) International application number: PCT/EP1993/000120 (87) International publication number: WO 1994/017246 (04.08.1994 Gazette 1994/18)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB GR IE IT LI LU MC NL PT SE (71) Applicant: Seminara, Michele I-23022 Chiavenna (IT)	(72) Inventor: Seminara, Michele I-23022 Chiavenna (IT) (74) Representative: Baggiolini, Raimondo Patent Attorneys, et al  Fiammenghi-Fiammenghi Via San Gottardo 15 CH-6900 Lugano CH-6900 Lugano (CH)