Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2006-08-01
2006-08-01
Tran, Sinh (Department: 2615)
Metal working
Method of mechanical manufacture
Electrical device making
C381S162000
Reexamination Certificate
active
07082668
ABSTRACT:
A mechanical resonance frequency of a vibration section of an electro-acoustic transducer having a vibrating function is measured during an assembly process, and is compared with a predetermined mechanical resonance frequency. Based on a difference obtained by this comparison, a weight to be attached and a position for fixing a vibration section to a frame is determined. In accordance with this determination, the weight for resonance frequency adjustment is attached to the vibration section, or suspension and the frame which have been provisionally fixed are fixed again. Thus, the predetermined mechanical resonance frequency can be obtained steadily. As a result, an electro-acoustic transducer having a vibrating function with stabilized mechanical resonance frequency of the vibration section can be produced.
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patent: 7003130 (2006-02-01), Chung
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Ajiki Kenichi
Ando Kimihiro
Briney III Walter F
Tran Sinh
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