EP 2041995 A1 20090401 - MINIATURE ELECTRO-ACOUSTIC TRANSDUCER WITH INTEGRATED COUPLING COIL
Title (en)
MINIATURE ELECTRO-ACOUSTIC TRANSDUCER WITH INTEGRATED COUPLING COIL
Title (de)
ELEKTROAKUSTISCHER MINIATURWANDLER MIT INTEGRIERTER KOPPELSPULE
Title (fr)
TRANSDUCTEUR ÉLECTRO-ACOUSTIQUE MINIATURE DOTÉ D'UNE BOBINE DE COUPLAGE INTÉGRÉE
Publication
Application
Priority
- EP 2007056065 W 20070619
- US 81917406 P 20060707
Abstract (en)
[origin: WO2008003583A1] The present invention relates to a miniature electro-acoustic transducer assembly comprising a magnet circuit comprising a permanent magnet assembly arranged to generate a magnetic flux in an air gap, a voice coil positioned at least partly in t he air gap, the voice coil being operatively connected to a displaceable diaphragm, and a coupling coil formed by an electrically conducting path, the coupling coil being adapted to couple to a T-coil of an associated hearing aid by generating, in relation to the miniature electro-acoustic transducer, an external electro- magnetic field having a spatial extension overlapping said coil of the associated hearing aid, wherein diaphragm displacements are essentially unaffected by current flowing in the electrically conducting path forming the coupling coil.
IPC 8 full level
H04R 3/12 (2006.01); H04B 5/00 (2006.01); H04M 1/03 (2006.01); H04R 9/06 (2006.01)
CPC (source: EP KR)
H04B 5/00 (2013.01 - EP KR); H04B 5/266 (2024.01 - EP); H04M 1/03 (2013.01 - KR); H04R 3/12 (2013.01 - EP KR); H04R 9/06 (2013.01 - EP KR); H04R 25/554 (2013.01 - EP)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
WO 2008003583 A1 20080110; CN 101491112 A 20090722; EP 2041995 A1 20090401; KR 20090027749 A 20090317
DOCDB simple family (application)
EP 2007056065 W 20070619; CN 200780025788 A 20070619; EP 07730244 A 20070619; KR 20097001911 A 20090129