1974-01-28
1976-01-27
Claffy, Kathleen H.
H04R 1902
Patent
active
039353974
ABSTRACT:
An electrostatic loudspeaker element including a diaphragm positioned between a pair of acoustically transparent wire grid electrode assemblies. In the preferred embodiment, each electrode assembly comprises a flat rectangular frame having a plurality of wire guiding slots on both sides. A wire whose diameter equals the depth of the slots is wound continuously around the frame in a helical pattern, and a dielectric spacer is adhesively attached to the frame across the slots to maintain the critical distance between the wire grid and the diaphragm. The frame is made of a material having a coefficient of thermal expansion equal to the wire.
REFERENCES:
patent: 2441564 (1948-05-01), Combs
patent: 2542733 (1951-02-01), Tritle et al.
patent: 2896025 (1959-07-01), Janszen
patent: 2982888 (1961-05-01), Whearley
patent: 3267968 (1966-08-01), Foll et al.
patent: 3432785 (1969-03-01), Solmos
"Polystyrene Applied to Radio Apparatus", R. L. Harvey et al., RCA Review, Oct. 1939, pp. 200-203.
Claffy Kathleen H.
Electronic Industries, Inc.
Stellar George G.
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