Compact speaker for portable phone

Details Compact speaker for portable phone Compact speaker for portable phone

2005-05-17

2005-05-17

Kuntz, Curtis (Department: 2643)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S398000, C381S189000, C381S412000, C381S420000, C381S151000

Reexamination Certificate

active

06895099

ABSTRACT:
A speaker for a portable phone capable of being assembled without bonding by adhesives is disclosed. The speaker has a protector having a plurality of sound holes, and having an annular tension extension formed at a periphery thereof and extended upwardly and outwardly; a frame having a stepped portion and a cylindrical wall extended upwardly from the periphery of the stepped portion and having locking means; a diaphragm seated on the stepped portion of the frame and intended to generate sound; a voice coil attached to a lower surface of the diaphragm and adapted to vibrate; a top plate disposed in the voice coil; and a magnet fixedly disposed between the top plate and the frame and adapted to generate a predetermined magnetic field.

REFERENCES:
patent: 4284857 (1981-08-01), Slavin
patent: 6400825 (2002-06-01), Miyamoto
patent: 6513623 (2003-02-01), Sugiyama
patent: 6618487 (2003-09-01), Azima

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