Diaphragm for speaker, speaker using the diaphragm for...

Details Diaphragm for speaker, speaker using the diaphragm for... Diaphragm for speaker, speaker using the diaphragm for...

2011-08-23

2011-08-23

San Martin, Edgardo (Department: 2832)

Acoustics

Diaphragm

Critically defined material or coating

C181S170000, C381S426000, C381S428000

Reexamination Certificate

active

08002079

ABSTRACT:
A speaker diaphragm which includes a woven cloth which contains a thermosetting resin of thermo-cured state, and a paper board bonded and integrated with the woven cloth at the back surface. The woven cloth has its weave texture exposed on the front surface. The diaphragm has a high strength because it is made with a woven cloth; furthermore, its hardness is high because the thermosetting resin impregnated in woven cloth is in thermo-cured state. Thus the diaphragm helps implementing a speaker which demonstrates superior vibration characteristics in the high frequency sound region.

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International Search Report for PCT/JP2008/001851, Nov. 11, 2008.

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