(19)
(11) EP 1 069 243 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
06.06.2001 Bulletin 2001/23

(43) Date of publication A2:
17.01.2001 Bulletin 2001/03

(21) Application number: 00115350.1

(22) Date of filing: 14.07.2000
(51) International Patent Classification (IPC)7: E01F 8/00
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
Designated Extension States:
AL LT LV MK RO SI

(30) Priority: 14.07.1999 IT BO990394
01.09.1999 IT BO990467
15.10.1999 IT BO990557

(71) Applicant: METALMECCANICA FRACASSO S.p.A.
30032 Fiesso d'Artico (IT)

(72) Inventor:
  • Cicinnati, Luigi
    35126 Padova (IT)

(74) Representative: Cerbaro, Elena, Dr. et al
STUDIO TORTA S.r.l., Via Viotti, 9
10121 Torino
10121 Torino (IT)

   


(54) Soundproofing panel for acoustic barriers


(57) A soundproofing panel (1) for acoustic barriers, which is defined exclusively by a sheet (2) preferably, though not exclusively, made of metal, and having, on one of the two lateral surfaces, a number of longitudinal sound-breaking fins (3) parallel to and facing one another, and each for breaking the front (F) of the incident sound wave; the longitudinal sound-breaking fins (3) having a T-shaped section, and being equally spaced along the whole lateral surface (2a) of the sheet (2) to define a number of open gaps (4) for preventing propagation of the incident sound wave; each gap (4) possibly housing an insert (9) of soundproofing and/or sound-absorbing material; and the back of each gap (4) possibly having drawings (11) with the concavity selectively facing inwards or outwards of the gap (4) to vary the total volume of each gap (4) on the soundproofing panel (1) as required.






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