Electroacoustic transducer

Details Electroacoustic transducer Electroacoustic transducer

1994-04-29

1995-11-14

Jordan, Charles T.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

3403911, 3403884, 381193, G08B 300

Patent

active

054673232

ABSTRACT:
In an electroacoustic transducer, the opening portion of a casing body which contains therein a magnetic driving portion for converting an electric signal into a sound is closed by a casing cap to form a resonance space (resonance chamber) which resonates in response to an acoustic vibration generated by the magnetic driving portion, wherein a plurality of slender projections to be entered into said casing body are projected from the casing cap to position said casing cap relative to said casing body. As a result, it is possible to enlarge the capacity of the resonance chamber and improve the assembling accuracy.

REFERENCES:
patent: 4160132 (1979-07-01), Rae et al.
patent: 4163223 (1979-07-01), Sato et al.
patent: 4251807 (1981-02-01), Hofer et al.
patent: 5416751 (1995-05-01), Imahori et al.

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