Reconstituted mica acoustic diaphragm

Details Reconstituted mica acoustic diaphragm Reconstituted mica acoustic diaphragm

1975-11-24

1977-05-31

Tomsky, Stephen J.

Acoustics

Diaphragm

Critically defined material or coating

G10K 1300, H04R 700

Patent

active

040263843

ABSTRACT:
An acoustic diaphragm composed essentially of a flat, cone-like or dome-like reconstituted mica paper of fine scaly mica flakes and an organic polymeric binder impregnated in the mica paper. The diaphragm has a density of 1.3 to 2.3 g/cm.sup.3 and a Young's modulus of 6 .times. 10.sup.10 to 3 .times. 10.sup.12 dyne/cm.sup.2.

REFERENCES:
patent: 1192833 (1916-07-01), Steurer
patent: 2760879 (1956-08-01), McDaniel, Jr. et al.
patent: 3226286 (1965-12-01), Scheuer
patent: 3880972 (1975-04-01), Towne et al.
patent: 3930130 (1975-12-01), Boszor

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