EP 1558057 A1 20050727 - Loudspeaker with specific plastic element for sound emission
Title (en)
Loudspeaker with specific plastic element for sound emission
Title (de)
Lautsprecher mit einem spezifischen Kunststoffelement zur Schallabstrahlung
Title (fr)
Haut-parleur avec un élément spécifique en plastique à l'émission du son
Publication
Application
Priority
EP 04075285 A 20040123
Abstract (en)
The device according to the invention is constructed as a loudspeaker (1) for reproducing sound spectra in a very professional way, for which in an inventive way a plate-shaped element (2) of EPP (= Expanded Poly Propylene) with a certain density is applied rigidly on a base plate (4) together with a post (5) with the electric coil systems (6, 7), in which in a very economical way a loudspeaker of a high quality level can be made. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
H04R 7/045 (2013.01); H04R 2307/029 (2013.01)
Citation (search report)
- [X] US 3618442 A 19711109 - KAWAKAMI GENICHI
- [XY] US 6411723 B1 20020625 - LOCK CHRISTOPHER COLIN [NZ], et al
- [XY] EP 0969691 A1 20000105 - SONY CORP [JP]
- [XA] US 4190746 A 19800226 - HARWOOD HUGH D [GB], et al
- [YA] GB 2310160 A 19970820 - COLUMBUS PLASTICS LTD [GB], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 04075285 A 20040123