Speaker diaphragm and speaker structure

Acoustics – Diaphragm – Critically defined material or coating

Reexamination Certificate

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Details

C181S167000, C381S426000, C381S428000

Reexamination Certificate

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11355438

ABSTRACT:
A speaker diaphragm includes a base material impregnated with a thermosetting resin composition. The base material includes a first surface material, a core material, and a second surface material in the stated order; the first surface material and the second surface material are each formed of a woven fabric or a non-woven fabric; and the core material is formed of a woven fabric or a non-woven fabric each including hollow fine particles.

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