Piezoelectric electroacoustic transducers of the bi-laminar flex

Details Piezoelectric electroacoustic transducers of the bi-laminar flex Piezoelectric electroacoustic transducers of the bi-laminar flex

1978-09-15

1980-02-26

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310335, 179110A, H01L 4110

Patent

active

041907841

ABSTRACT:
An improved transducer utilizes an acoustic delay line to adjust the phase f the acoustic output from the out-of-phase portion of a free resonant flexural disc so that it is constructively added to the acoustic output generated from the remaining portion of the resonant flexural disc. The improved transducer combines an acoustic coupler with the housing structure of the transducer for the purpose of increasing the radiation resistance load on the vibratile disc to achieve increased acoustic output from the transducer.

REFERENCES:
patent: 2967957 (1961-01-01), Massa
patent: 3206558 (1965-09-01), Shoot
patent: 3253674 (1966-05-01), Desmares
patent: 3271596 (1966-09-01), Brinkerhoff
patent: 3331970 (1967-07-01), Dundon et al.
patent: 3708702 (1973-01-01), Brunnert et al.
patent: 3721840 (1973-03-01), Yamada
patent: 3860838 (1975-01-01), Kumon
patent: 3890513 (1975-06-01), Barleen

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