Ultrasonic transducer

Details Ultrasonic transducer Ultrasonic transducer

1994-09-29

1995-07-18

Eldred, J. Woodrow

Communications, electrical: acoustic wave systems and devices

Signal transducers

367157, 367163, 367174, 310322, 310334, 310800, H04R 1700

Patent

active

054348307

ABSTRACT:
Ultrasonic piezoelectric transducer comprising a piezoelectric material having a profile whereby the transducer transmits and/or receives ultrasonic vibrations in a dilational (quasilongitudinal) mode. The profile is curved and includes a point of inflection. Possesses a vibrational peak in the frequency range 10 KHz-200 KHz. Construction is performed via profiling and tensioning the piezoelectric material.

REFERENCES:
patent: 3115588 (1963-12-01), Hueter
patent: 3816774 (1974-06-01), Ohnuki et al.
patent: 4028566 (1977-06-01), Franssen et al.
patent: 4056742 (1977-11-01), Tibbetts
patent: 4284921 (1981-08-01), Lemonon et al.
patent: 4578613 (1986-03-01), Posthuma de Boer et al.
Electronic Components, p. 3, Abstract No. 84-238076/39 DE 3309-234-A, Ultrasonic transducer--with receiver layer and stack of radiator foils made of piezoelectric polymer, Siemens AG, 15.03.83-DE-309234.

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