Composite low frequency transducer

Details Composite low frequency transducer Composite low frequency transducer

1977-12-15

1979-05-29

Budd, Mark O.

Electrical generator or motor structure

Non-dynamoelectric

Piezoelectric elements and devices

310337, 310312, H01L 4110

Patent

active

041568249

ABSTRACT:
A composite low frequency transducer that makes it possible to lower the ural frequency and use higher power levels than can be obtained with a ceramic transducer alone. The transducer includes metal and ceramic elements. The metal element consists of a cylindrical shell which is multiply slitted longitudinally and alternately from each end, the alternate slits extending substantially but not completely to the opposite end. The ceramic transducer element is cylindrical and is in contact with and centrally positioned within the slitted exterior shell. The resulting composite transducer operates at a frequency which is several octaves less than the natural lowest frequency of the ceramic transducer alone.

REFERENCES:
patent: 2812452 (1957-11-01), Harris
patent: 3111595 (1963-11-01), Junger
patent: 3281726 (1966-10-01), Schafft
patent: 3560771 (1971-02-01), Baker, Jr.
patent: 3718897 (1973-02-01), Abbott

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