Speaker

Details Speaker Speaker

2005-03-22

2009-08-04

Ni, Suhan (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S396000, C381S397000, C381S433000

Reexamination Certificate

active

07570779

ABSTRACT:
In a speaker having a magnet circuit causing vibrations of a diaphragm and attached to and supported on a frame, a plurality of projections is formed on a bottom portion of the frame supporting the magnetic circuit. The projections are in point contact with a rear-facing face of a flange of a yoke partially forming the magnetic circuit in order for the magnetic circuit to be supported on the speaker frame.

REFERENCES:
patent: 5243151 (1993-09-01), Prokisch
patent: 5295195 (1994-03-01), Mitobe et al.
patent: 5583945 (1996-12-01), Iijima et al.
patent: 6537234 (2003-03-01), Komatsu
patent: 2005/0276438 (2005-12-01), Kobayashi et al.
patent: 93 01 425 (1993-05-01), None
patent: 801 695 (1958-09-01), None
patent: 10-117472 (1998-05-01), None
patent: 2005-057640 (2005-03-01), None

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