Diaphragm transducer

Details Diaphragm transducer Diaphragm transducer

2006-10-03

2006-10-03

Le, Huyen (Department: 2646)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S176000, C381S152000, C381S408000

Reexamination Certificate

active

07116796

ABSTRACT:
A new type of diaphragm transducer comprising magnets to provide magnetic field strength in a planar region and a planar diaphragm located in the said planar region. The diaphragm has a plurality of conductors on its planar surface for inducing electromagnetic forces acting on theses conductors in said planar region when current flows through said conductors. The magnets are arranged in magnetic interaction with a magnetically conducting material, preferably soft iron, to conduct magnetic field from said magnets to said planar region.

REFERENCES:
patent: 4354066 (1982-10-01), Necoechea
patent: 4491698 (1985-01-01), Larson et al.
patent: 5195143 (1993-03-01), Spiegel et al.
patent: 5297214 (1994-03-01), Bruney
patent: 5627903 (1997-05-01), Porrazzo et al.
patent: 0 587 910 (1994-03-01), None
patent: 2 137 047 (1984-09-01), None
patent: WO 98/20705 (1998-05-01), None

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