Electroacoustic transducer

Details Electroacoustic transducer Electroacoustic transducer

2006-06-13

2006-06-13

Ni, Suhan (Department: 2646)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S152000, C381S414000, C381S431000

Reexamination Certificate

active

07062063

ABSTRACT:
An electroacoustic transducer includes a magnetic circuit of a magnetically conductive material with a pair of opposed surfaces defining a gap therebetween. The magnetic circuit includes a magnet inducing a magnetic field in the gap, the magnet having a surface constituting one of the opposed surfaces. The magnetic circuit further includes a diaphragm and a coil having electrically conducting paths secured to the diaphragm. The coil has portions of its paths situated in the gap.

REFERENCES:
patent: 1934184 (1933-11-01), Gerlach et al.
patent: 4544805 (1985-10-01), Sawafuji
patent: 6285773 (2001-09-01), Carme et al.
patent: 2 766 650 (1999-01-01), None
patent: 56-137797 (1981-10-01), None
patent: 9-139997 (1997-05-01), None
patent: 11-205897 (1999-07-01), None
EPO Search Report dated Jan. 15, 2002.

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