EP 1100287 A1 20010516 - Loudspeaker
Title (en)
Loudspeaker
Title (de)
Lautsprecher
Title (fr)
Haut-parleur
Publication
Application
Priority
EP 99402807 A 19991110
Abstract (en)
A rectangular, polymorphous or elliptical loudspeaker which is flat and has one or more flat diaphragms 14, 15 made of paper, double skinned fluted polypropylene copolymer, corrugated cardboard, layers of EVA (Ethlene-Vinylacetate), EPS (Polyform), PVC (Polyvinyl Chloride). The panel has a longitudinal bending strength greater than the transverse bending strength. The diaphragm is vibrated by a driver unit 16 which comprises a magnet 17 and voice coil 18. Magnet 17 can be mounted on the rear panel 15 and the voice coil 18 is mounted on the front diaphragm 14. An alternative is to mount magnet 17 on the rear diaphragm instead of panel. The diaphragm 14 is mounted at its edges to a frame 11 with the driver unit 16 mounted in the space enclosed by the frame and the panel 15. <IMAGE>
IPC 1-7
IPC 8 full level
H04R 7/06 (2006.01)
CPC (source: EP)
H04R 7/06 (2013.01); H04R 2307/029 (2013.01)
Citation (search report)
- [XAY] WO 9902012 A1 19990114 - NEW TRANSDUCERS LTD [GB], et al
- [YA] US 4190746 A 19800226 - HARWOOD HUGH D [GB], et al
- [Y] EP 0924960 A2 19990623 - NOKIA TECHNOLOGY GMBH [DE]
- [Y] US 5705108 A 19980106 - NONOGAKI AKIHIRO [JP]
- [Y] EP 0336448 A2 19891011 - MATSUSHITA ELECTRIC IND CO LTD [JP], et al
- [Y] DE 4213991 A1 19931104 - INGO KINTZEL PROTOTYPENBAU [DE]
- [Y] EP 0729289 B1 19980722 - TEIJIN LTD [JP], et al
- [Y] PATENT ABSTRACTS OF JAPAN vol. 5, no. 121 (E - 068) 5 August 1981 (1981-08-05)
- [Y] PATENT ABSTRACTS OF JAPAN vol. 1996, no. 4 30 April 1996 (1996-04-30)
- [Y] PATENT ABSTRACTS OF JAPAN vol. 6, no. 185 (E - 132) 21 September 1982 (1982-09-21)
Designated contracting state (EPC)
DE FR
DOCDB simple family (publication)
DOCDB simple family (application)
EP 99402807 A 19991110