Sonar transducer having inertial inductor

Details Sonar transducer having inertial inductor Sonar transducer having inertial inductor

1975-10-20

1977-07-12

Tudor, Harold

Communications: electrical

Selective

Interrogation response

310 82, 340 8R, H04B 1300

Patent

active

040357619

ABSTRACT:
A transducer assembly in which a transducer unit of a piezoelectric material which is rigidly held between a rear member and a front member, both of which are made to vibrate upon energizing the piezoelectric material. Inductive elements comprising copper conductors wound about iron cores and utilized in the tuning of the transducer assembly are rigidly connected to one or both of the members and may also be connected to the transducer unit itself to serve as a portion of the inertial mass which imparts a mechanical vibrational characteristic to the transducer assembly. In one embodiment of the invention, the rear member is provided with a void wherein there is nested an inductor having an inertia similar to that of the material removed from the rear member in forming the void.

REFERENCES:
patent: 2963681 (1960-12-01), Morgan
patent: 3185869 (1965-05-01), Shoor
patent: 3283590 (1966-11-01), Shang
patent: 3374663 (1968-03-01), Morris
patent: 3389276 (1968-06-01), Gradin et al.
patent: 3427481 (1969-02-01), Lenahan et al.
patent: 3460061 (1969-08-01), Massa
patent: 3716828 (1973-02-01), Massa
patent: 3769532 (1973-10-01), Tocquet
patent: 3794866 (1974-02-01), McElroy

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