Ultrasonic transducer

Details Ultrasonic transducer Ultrasonic transducer

1987-01-28

1987-11-10

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310322, 310327, 367180, H01L 4108

Patent

active

047059818

ABSTRACT:
An ultrasonic transducer comprises a diaphragm formed by a metal plate provided with a bulged portion in its center and a piezoelectric element bonded to the inner surface of the bulged portion thereby to make the diaphragm vibrate in a bending mode. A node line is present outside the bulged portion in vibration of the diaphragm, and the diaphragm is sandwiched by first and second elastic members along the node line. The first and second elastic members are held between a case and a base fixed thereto so that the diaphragm is elastically retained through the first and second elastic members.

REFERENCES:
patent: 3206558 (1965-09-01), Shoot
patent: 3745384 (1973-07-01), Blanchard
patent: 3786202 (1974-01-01), Schafft
patent: 4176524 (1979-12-01), Kamiyama
patent: 4373119 (1983-02-01), Feder
patent: 4486742 (1984-12-01), Kudo et al.
patent: 4556814 (1985-12-01), Ito et al.
patent: 4641054 (1987-02-01), Takahata et al.

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