EP 1458215 A2 20040915 - Surroundless piston-driven vibrating speaker
Title (en)
Surroundless piston-driven vibrating speaker
Title (de)
Randringloser Kolbenlautsprecher
Title (fr)
Haut-parleur à vibration de piston sans anneau de suspension
Publication
Application
Priority
CN 03223604 U 20030217
Abstract (en)
Disclosed is a surroundless piston-driven vibrating speaker, the main structure of which is composed of an improved vibrating system, a supporting system and an external magnet system. The forementioned vibrating system comprises a voice cone, a voice coil and a central damper. The forementioned supporting system comprises a shell frame 1 with air holes, a floating locating damper6, a sound absorption cotton material 8, a damper fixing ring and a dust preventing cover 13. The forementioned external magnet system comprises a ferrite core, an upper plate and a T-yoke.
IPC 1-7
IPC 8 full level
CPC (source: EP)
H04R 7/20 (2013.01); H04R 9/02 (2013.01); H04R 1/20 (2013.01); H04R 2201/34 (2013.01); H04R 2400/11 (2013.01)
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
Designated extension state (EPC)
AL LT LV MK
DOCDB simple family (publication)
EP 1458215 A2 20040915; EP 1458215 A3 20080312; CN 2607708 Y 20040324
DOCDB simple family (application)
EP 04003091 A 20040212; CN 03223604 U 20030217