Concave diaphragm for electro-acoustic transducer

Details Concave diaphragm for electro-acoustic transducer Concave diaphragm for electro-acoustic transducer

1976-01-08

1977-04-05

Stellar, George G.

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181171, 340391, H04R 722, H04R 1300

Patent

active

040163768

ABSTRACT:
An electro-acoustic transducer, adapted to constitute part of an alarm unit, includes a magnetic diaphragm adjacent the core of the transducer. The case for the transducer is so configured that it forces the diaphragm into a concave shape, whereby the diaphragm operates extremely efficiently and provides other advantages over a planar diaphragm.

REFERENCES:
patent: 496224 (1893-04-01), Holman
patent: 751501 (1904-02-01), Gundlach
patent: 1087127 (1914-02-01), Marr

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