EP 1336321 B1 20091223 - ELECTRODYNAMIC BENDING MOMENT DRIVER
Title (en)
ELECTRODYNAMIC BENDING MOMENT DRIVER
Title (de)
ELEKTRODYNAMISCHER BIEGEMOMENTENTREIBER
Title (fr)
Dispositif d'excitation électrodynamique produisant des couples de flexion
Publication
Application
Priority
- DE 10058102 A 20001123
- EP 0111183 W 20010926
Abstract (en)
[origin: WO0243434A2] A bending moment driver, suitable for the boundary operation of planar diaphragm loudspeakers, comprises an oscillatory coil wound along the boundary edge surface of the resonator plate and a permanent magnet system arranged at a small separation from the boundary edge surface of the resonator plate. In an alternative embodiment the driver has a pole core with a fixed coil wound around the above and a permanent magnet let into the plate and fixed to the resonator plate for moment transmission, whereby the pole core is arranged around the edge of the resonator plate in a jaw-like manner. An opposing force pair parallel to the normal of the plate is thus generated, exerting a bending moment on the resonator plate by means of a lever arm corresponding to the length of the permanent magnet.
IPC 8 full level
H04R 7/04 (2006.01); H04R 9/06 (2006.01); H04R 11/02 (2006.01); H04R 17/00 (2006.01)
CPC (source: EP)
H04R 11/02 (2013.01); H04R 7/045 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
WO 0243434 A2 20020530; WO 0243434 A3 20030306; DE 10058102 A1 20020606; DE 10058102 C2 20030703; DE 50115276 D1 20100204; EP 1336321 A2 20030820; EP 1336321 B1 20091223
DOCDB simple family (application)
EP 0111183 W 20010926; DE 10058102 A 20001123; DE 50115276 T 20010926; EP 01983506 A 20010926