(19)

(11)

EP 0 424 401 A1

(12)

(43) Date of publication: 02.05.1991 Bulletin 1991/18 (21) Application number: 89905655.0 (22) Date of filing: 10.05.1989

(51) International Patent Classification (IPC):  E04D 1/ 18( . ) (86) International application number: PCT/EP1989/000513 (87) International publication number: WO 1990/000654 (25.01.1990 Gazette 1990/03)

(84) Designated Contracting States: AT BE CH DE FR IT LI NL SE (30) Priority: 15.07.1988 IT 19880061942 (71) Applicants: Scarpa, Tobia I-31040 Trevignano (Treviso) (IT) Bianchin Scarpa, Afra I-31040 Trevignano (Treviso) (IT)	(72) Inventors: Scarpa, Tobia I-31040 Trevignano (Treviso) (IT) Bianchin Scarpa, Afra I-31040 Trevignano (Treviso) (IT) (74) Representative: Piovesana, Paolo  Corso del Popolo, 70 I-30172 Venezia-Mestre I-30172 Venezia-Mestre (IT)