Acoustic transducer

Details Acoustic transducer Acoustic transducer

1992-09-28

1994-08-16

Lobo, Ian J.

Communications, electrical: acoustic wave systems and devices

Signal transducers

Underwater type

367162, 310334, H04R 128, H04R 1700

Patent

active

053392922

ABSTRACT:
A piezoelectric acoustic transducer for coupling acoustic energy to a gaseous atmosphere in a pulse-echo ranging system has a tubular housing closed at one end by a thin integral wall to which a radiating plate of a transducer assembly is coupled to radiate acoustic energy by means of a layer of acoustically transmissive matching material. The transducer assembly except for its radiating surfaces is wrapped in an acoustic decoupling material such as cork, and the side wall of the tubular housing, which has a mounting ring behind the transducer assembly, is also internally lined with such material, space around and behind the transducer assembly within the housing being filled with a slightly elastomeric potting compound. This arrangement decouples the mounting ring from the transducer assembly, thus stabilizing the ringing characteristics of the transducer.

REFERENCES:
patent: 3674945 (1972-07-01), Hands
patent: 3803545 (1974-04-01), Van Dyck et al.
patent: 4078160 (1978-03-01), Bost
patent: 4183007 (1980-01-01), Baird
patent: 4297607 (1981-10-01), Lynnworth et al.
patent: 5038067 (1991-08-01), Tabin
`Ultrasonic Transducers`, Milltronics, Sep. 1984.

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