Speaker

Details Speaker Speaker

2008-01-29

2008-01-29

Ni, Suhan (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S398000, C381S412000

Reexamination Certificate

active

07324658

ABSTRACT:
A speaker includes a diaphragm having a central aperture at which a bobbin with a voice coil wound therearound is mounted, and mounted at the outer periphery thereof on a frame with an edge therebetween, and a magnetic circuit section that has a magnetic gap in which the bobbin is placed, and that drives the diaphragm to vibrate in the frontward and rearward direction. The speaker can use a larger diaphragm by providing the frame with an edge-mounting portion on which the edge is mounted, and a portion formed in front of the edge-mounting portion.

REFERENCES:
patent: 3614335 (1971-10-01), Dymoke-Bradshaw et al.
patent: 5590211 (1996-12-01), Chang
patent: 62-141895 (1987-06-01), None
patent: 09 084188 (1997-03-01), None
patent: 62 141895 (1997-06-01), None
patent: 10 271587 (1998-10-01), None
patent: 10-271587 (1998-10-01), None
patent: 2000 175292 (2000-06-01), None

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