Method for making a diaphragm for an electro-acoustic transducer

Details Method for making a diaphragm for an electro-acoustic transducer Method for making a diaphragm for an electro-acoustic transducer

1984-11-29

1987-01-27

Anderson, Philip

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

181167, 264 44, 264129, 264136, 264137, 264317, 264DIG44, B32B 1906, C04B 3806, B28B 126, B28B 734

Patent

active

046392831

ABSTRACT:
A diaphragm for loudspeakers and the like comprises a diaphragm base component formed of ceramics of a three-dimensional network structure so as to be light in weight, high in bending stiffness, easy to make and high in sound velocity. The diaphragm base component is sealed by a sealing material so as to be made air-permeable. This diaphragm is made by impregnating combustible foamed plastics material with a ceramic slurry, baking the ceramic impregnated foamed plastics to burn off the foamed plastics material, and the diaphragm base component sealing with the sealing material.

REFERENCES:
patent: 3112184 (1963-11-01), Hollenbach
patent: 3574646 (1971-04-01), Wismer et al.
patent: 3616841 (1971-11-01), Walz
patent: 3939002 (1976-02-01), Washbourne
patent: 4332753 (1982-06-01), Crooke

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