Diaphragm type piezoelectric electroacoustic transducer

Details Diaphragm type piezoelectric electroacoustic transducer Diaphragm type piezoelectric electroacoustic transducer

1978-08-28

1980-10-14

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310324, 310335, 310346, H01L 4110

Patent

active

042283795

ABSTRACT:
An electroacoustic transducer especially for use in intrusion alarm systems and comprising a metal diaphragm having a thickness-poled piezoelectric ceramic disk bonded to the center thereof and having an electrode surface in contact with the metal diaphragm. An integral tab outwardly extends from the diaphragm to provide one electrical terminal, while the other electrical terminal is provided by a flexible electrical ribbon connection to the other electrode of the ceramic disk. An acoustically massive clamp ring attached to the periphery of the diaphragm defines the area of vibration. The vibrating assembly is mounted within a plastic housing having a chamber configured and dimensioned to improve the electroacoustic performance of the transducer structure. Various pattern directors can be employed with the transducer to achieve shaping of the pattern.

REFERENCES:
patent: 2967957 (1961-01-01), Massa
patent: 3058539 (1962-10-01), Adler
patent: 3253674 (1966-05-01), Desmares
patent: 3638052 (1972-01-01), Massa
patent: 3754435 (1973-08-01), Zeutschel
patent: 3761956 (1973-09-01), Takahashi et al.
patent: 3826333 (1974-07-01), Buckwalter
patent: 3849679 (1974-11-01), Massa
patent: 3860838 (1975-01-01), Kumon
patent: 3970879 (1976-07-01), Kumon
patent: 4033431 (1977-07-01), Ebejer
patent: 4063049 (1977-12-01), Pipitone

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