Speaker apparatus

Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Electromagnetic

Reexamination Certificate

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Details

C381S432000

Reexamination Certificate

active

11045990

ABSTRACT:
A speaker apparatus has a frame to which a convex paper is attached. A bobbin with a voice coil is attached to the paper cone. A magnetic circuit is formed inside the frame. A damper suspending the bobbin is composed of a corrugation portion, which is positioned orthogonal to the bobbin in an inactivity of the speaker apparatus. The damper also includes a first leg portion extending forward along a vibration direction of the bobbin from an inner periphery end of the corrugation portion, and a second leg portion extending backward along the vibration direction of the bobbin from an outer periphery end of the corrugation portion. The first and second leg portions have substantially the same length.

REFERENCES:
patent: 2002/0034315 (2002-03-01), Auerbach et al.
patent: 2002/0051558 (2002-05-01), Kuze et al.

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