(19)
(11) EP 0 796 032 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
23.01.2002 Bulletin 2002/04

(43) Date of publication A2:
17.09.1997 Bulletin 1997/38

(21) Application number: 97200718.1

(22) Date of filing: 11.03.1997
(51) International Patent Classification (IPC)7: H04R 1/02
(84) Designated Contracting States:
AT BE DE DK FR GB GR IE IT NL PT SE

(30) Priority: 12.03.1996 ES 9600598

(71) Applicant: Lab. Radio, S.A.
46160 Lliria (Valencia) (ES)

(72) Inventor:
  • Rosa Baixauli,José
    46160 Lliria (Valencia) (ES)

(74) Representative: Ungria Lopez, Javier et al
Avda. Ramon y Cajal, 78
28043 Madrid
28043 Madrid (ES)

   


(54) Plastic grills for loudspeakers


(57) Of the type that incorporate a plurality of orifices (2 and 2'), and that furthermore include in their rear side a series of reinforcing ribs. It is characterized in that the reinforcing ribs are determined by a plurality of straight ribs (3) parallel and equidistant among them which are located at the space comprised between two lines of orifices, which are complemented and interlaced with some curved ribs (4) forming an "S" shape which run along a line of orifices, surrounding them alternatively.
The arrangement of the ribs prevents them to be seen from outside, while simultaneously improve the mechanical resistance to breakage and the fidelity of sound.






Search report