Diaphragm material for acoustical transducer

Details Diaphragm material for acoustical transducer Diaphragm material for acoustical transducer

1984-05-03

1985-11-12

Fuller, Benjamin R.

Acoustics

Diaphragm

Critically defined material or coating

181170, 428408, 428902, H04R 702

Patent

active

045522430

ABSTRACT:
An improved diaphragm material for use with an acoustical transducer, such as a moving-coil electrodynamic loudspeaker and a loud speaker containing such diaphragm, which diaphragm comprises a formed, self-supporting, woven carbon fiber cloth material optionally having a thin air sealing plastic coating thereon, the diaphragm having a sonic velocity of about 5.times.10.sup.3 or greater and an internal loss of about 0.02 or more.

REFERENCES:
patent: 3930130 (1975-12-01), Boszor
patent: 4190746 (1980-02-01), Harwood et al.
patent: 4410768 (1983-10-01), Nakamura et al.
patent: 4428996 (1984-01-01), Miyoshi et al.

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