Speaker for vehicle

Details Speaker for vehicle Speaker for vehicle

2005-09-13

2005-09-13

Ni, Suhan (Department: 2643)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Mounting or support feature of housed loudspeaker

C381S124000, C381S395000

Reexamination Certificate

active

06944311

ABSTRACT:
A speaker for vehicle has a weight mounted on the backside of a magnetic circuit of a speaker unit. The weight includes a weighting part having a shape in which the thickness in an axial line of the speaker unit is made small and the diameter in a direction perpendicular to the axial line is extended. The outer diameter of the weighting part is made longer than that of the magnetic circuit. The weighting part has a peripheral edge extending forward in the axial direction to cover the outer periphery of the magnetic circuit at least partially. Where a frame of the speaker unit is provided with an opening, the weight is designed to have a shape and position so as not to face the opening.

REFERENCES:
patent: 977616 (1910-12-01), Gottschalk
patent: 1954966 (1934-04-01), Thuras
patent: 4230907 (1980-10-01), Hasselbach et al.
patent: 6724909 (2004-04-01), Tsumori et al.
patent: 6751330 (2004-06-01), Kowaki et al.
patent: 2002/0057821 (2002-05-01), Tsumori et al.
patent: 2000-013884 (2000-01-01), None
patent: A 2002-152884 (2002-05-01), None

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