Speaker device, and method and device for producing the same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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May 31, 2005
Grant Date -
N/A
app pub date -
Oct 6, 2000
filing date -
Oct 6, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A liquefied paper material is used as raw materials. A paper frame member 1 supporting a vibrating plate is paper-skimmed and formed. On paper-skimming and forming, a central hole for use in voice coils, air-release hole 1a releasing air pressure in a rear of the vibrating plate to outside due to vibration of the vibrating plate. A loudspeaker system is manufactured using the paper frame member 1.
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