Acoustics – Diaphragm – Critically defined material or coating
Patent
1973-12-20
1976-02-03
Tomsky, Stephen J.
Acoustics
Diaphragm
Critically defined material or coating
162141, G10K 1300, H04R 700
Patent
active
039359247
ABSTRACT:
A vibratory plate of pulp and chopped carbon fibers mixed uniformly in the paper. The pulp is thoroughly beaten to a degree not higher than 300 cc. of Canadian standard freeness.
REFERENCES:
patent: 1759387 (1930-05-01), Bateholts
patent: 3406126 (1968-10-01), Litant
patent: 3717218 (1973-02-01), Shiga et al.
patent: 3730830 (1973-05-01), Driscoll
Fujisawa Kenji
Ikuta Michinobu
Mitani Naoyuki
Nagao Shozo
Tomsky Stephen J.
Toray Industries Inc.
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