Method of manufacturing diaphrams for dynamic microphones

Details Method of manufacturing diaphrams for dynamic microphones Method of manufacturing diaphrams for dynamic microphones

1993-07-08

1994-07-19

Woo, Jay H.

Plastic and nonmetallic article shaping or treating: processes

With printing or coating of workpiece

Coating or impregnating workpiece before molding or shaping...

156245, 156250, 1563075, 264153, 2642975, 264320, B32B 3106, B32B 3120

Patent

active

053306953

ABSTRACT:
A diaphragm for microphones having a laminate structure which imparts damping characteristics to the diaphragm is disclosed. The laminate comprises upper and lower resilient layers composed of a plastic film. The upper and lower layers constrain a center layer composed of an elastomeric material having a high dissipation of vibratory shear motion. Manufacturing techniques for making such diaphragms are disclosed.

REFERENCES:
patent: 3132713 (1964-05-01), Seeler
patent: 3834486 (1974-09-01), Tsuge et al.
patent: 4340557 (1982-07-01), Gross
patent: 4353243 (1982-10-01), Martin
patent: 4790972 (1988-12-01), Coffman
patent: 4812186 (1989-03-01), McConnell et al.
patent: 4904318 (1990-02-01), Goto et al.
patent: 4959189 (1990-09-01), Rohrbacher

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