Diaphragm for speaker

Details Diaphragm for speaker Diaphragm for speaker

1981-06-24

1984-01-31

Bell, James J.

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428206, 428209, 428288, 428326, 428367, 428379, 428393, 428408, 428457, 428902, B32B 2714

Patent

active

044289960

ABSTRACT:
A diaphragm for a speaker formed of a mixture of carbon fiber, pulp and polyvinyl alcohol fiber as a binder with a thermosetting resin on the diaphragm base on which a metal film is provided in the interstices between fibers and on the entire fiber surface.

REFERENCES:
patent: 4112168 (1978-09-01), Schafft
patent: 4132828 (1979-01-01), Nakamura et al.
patent: 4169911 (1979-10-01), Yoshida et al.
patent: 4347104 (1982-08-01), Dressler

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