US PATENT SUBCLASS 367 / 176
.~.~ Transducer with resonant or damping structure


Current as of: June, 1999
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367 /   HD   COMMUNICATIONS, ELECTRICAL: ACOUSTIC WAVE SYSTEMS AND DEVICES

140  DF  SIGNAL TRANSDUCERS {4}
141  DF  .~ Underwater type {15}
176.~.~ Transducer with resonant or damping structure


DEFINITION

Classification: 367/176

Transducer with resonant or damping structure:

(under subclass 141) Subject matter wherein the transducer element is combined with structure whose natural frequency of vibration is disclosed as being either the same as the operating frequency of the element or such as to absorb to

attenuate undesired wave energy emanating from or applied to the element.

SEE OR SEARCH THIS CLASS, SUBCLASS:

162, for similar subject matter wherein the transducer element is piezoelectric.