Multifunction speaker

Details Multifunction speaker Multifunction speaker

2005-03-15

2008-11-18

Ni, Suhan (Department: 2615)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S396000, C381S189000, C381S191000, C381S430000

Reexamination Certificate

active

07454031

ABSTRACT:
A multifunction speaker has a frame made of an insulation material and having a cylindrical portion, a pair of supporting springs secured to the frame and to a magnetic circuit for supporting the magnetic circuit. The magnetic circuit comprises a pole piece having a center pole and a flange on which an annular magnet is mounted. The flange of the pole piece has a pair of positioning projections projected from a periphery of the flange for positioning the magnet.

REFERENCES:
patent: 5956622 (1999-09-01), Lee
patent: 6529611 (2003-03-01), Kobayashi et al.
patent: 7224090 (2007-05-01), Oh et al.

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