Loudspeaker diaphragm made of a molded, sintered ceramic body

Details Loudspeaker diaphragm made of a molded, sintered ceramic body Loudspeaker diaphragm made of a molded, sintered ceramic body

1984-01-17

1985-11-05

Adams, Russell E.

Acoustics

Diaphragm

Critically defined material or coating

179181R, 501119, G10K 1300, H04R 700

Patent

active

045507970

ABSTRACT:
A loudspeaker diaphragm comprising a molded, sintered ceramic body is described. The body is made of ceramic crystalline particles whose maximum size is below 1/5 time a thickness of the body which is in the form of a dome or cone. The dome- or cone-shaped diaphragm may have a flange along an opening side thereof in order to prevent deformation as may occur during firing.

REFERENCES:
patent: 4221773 (1980-09-01), Tsukagoshi et al.
patent: 4401911 (1983-08-01), Ravinet et al.
patent: 4494032 (1985-01-01), Martin
"Strength-Gain Size-Porosity Relations in Alumina", Journal of the American Ceramic Society, vol. 48, No. 1, Jan. 21, 1965, pp. 1-7, by E. M. Passmore, R. M. Spriggs, and T. Vasilos.

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