Speaker

Details Speaker Speaker

2005-01-11

2005-01-11

Le, Huyen (Department: 2643)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S407000, C381S412000, C381S420000

Reexamination Certificate

active

06842529

ABSTRACT:
A loudspeaker includes a bobbin, a coil, a magnetic circuit having a magnetic gap, a first cylinder fixed to the outer surface of the bobbin, a second cylinder connected with the first cylinder, a diaphragm and a damper coupled to the outer circumferential surface of the second cylinder, an edge coupled to the diaphragm, a frame, and terminals. The outer circumference of a yoke constituting the magnetic circuit has a plurality of slits, while the first cylinder and the second cylinder are connected together by a plurality of radially-disposed joints. The loudspeaker has a flat profile yet is compatible with large amplitude and high output power, and capable of reproducing a wide range of sounds from a low tone to a high tone.

REFERENCES:
patent: 5081684 (1992-01-01), House
patent: 6088466 (2000-07-01), Proni
patent: 55-064500 (1980-05-01), None
patent: 2756037 (1998-03-01), None
patent: 2000-278791 (2000-10-01), None
patent: 9005435 (1990-05-01), None

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