Ultrasonic transmitting and receiving devices using dielectric t

Details Ultrasonic transmitting and receiving devices using dielectric t Ultrasonic transmitting and receiving devices using dielectric t

1974-10-15

1977-07-05

Tudor, Harold

Communications: electrical

Selective

Addressing

73 675H, 179111E, 307 88ET, 340511, 340 5MP, H04R 1904

Patent

active

040343324

ABSTRACT:
The device for transmitting or receiving ultrasonic waves or pulses to and from well-defined adjustable directions or distances includes a capacitive transducer consisting of a layer of dielectric material tightly packed between two electrodes, one at least of which is formed of an appropriate array of elongated strips of circular or rectilinear shape.

REFERENCES:
patent: 1759811 (1930-05-01), Edelman
patent: 3373251 (1968-03-01), Seeler
patent: 3445824 (1969-05-01), Fulenwider
patent: 3543248 (1970-11-01), Oliver
patent: 3604251 (1971-09-01), Dixon
patent: 3678452 (1972-07-01), Silverman
patent: 3719922 (1973-03-01), Lopes, Jr. et al.
patent: 3736436 (1971-11-01), Crites
patent: 3736552 (1973-05-01), Sessler et al.
patent: 3771116 (1973-11-01), Farrah

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