Acoustic diaphragm, and method of fabricating acoustic...

Acoustics – Diaphragm – Mounting or suspension means

Reexamination Certificate

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C181S172000, C381S426000

Reexamination Certificate

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07980355

ABSTRACT:
There is provided an acoustic diaphragm used for a loudspeaker, having an injection-molded edge molded using a thermoplastic elastomer, in which the edge is formed using a workable polyolefinic elastomer, as a material, containing a soft segment having rubber particles of 1 μm to 10 μm in diameter uniformly dispersed therein, and a hard segment composed of an olefinic resin, and the edge is formed into a shape allowing the resin to be aligned as being not causative of anisotropy in the physical characteristics of the edge, as a result of thin-wall molding by the injection molding.

REFERENCES:
patent: 6390232 (2002-05-01), Kirschbaum
patent: 6543574 (2003-04-01), Mizone et al.
patent: 2005/0277735 (2005-12-01), Abraham et al.
patent: 7-131882 (1995-05-01), None
patent: 9-247793 (1997-09-01), None
patent: 2000-141416 (2000-05-01), None
patent: 2002159093 (2002-05-01), None
patent: 2003-78998 (2003-03-01), None
Japanese Office Action issued on Jan. 25, 2011 in corresponding Japanese Application No. 2005-337454.

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