Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1990-08-13
1992-03-24
Eldred, J. W.
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
367162, 367165, 367159, 310337, H04R 1700
Patent
active
050994603
ABSTRACT:
The sonar transducer includes a metal core about which is situated a cylindrical piezoelectric ceramic ring element with paper interposed therebetween. In order to improve resistance to fracture resulting from mechanical shock, in one embodiment, the core is reduced in diameter, such that a potting compound can be situated between the paper and the ring. In a second embodiment, the ring element is divided into two individual, axially aligned cylindrical ring subelements with a gasket interposed therebetween.
REFERENCES:
patent: 3177382 (1965-04-01), Green
patent: 4156863 (1979-05-01), Madison et al.
Baldasarre Thomas
Delara Mario
Pagliarini, Jr. John
Poturnicki, Jr. Alfred
Traft James
Eldred J. W.
Seabeam Instruments, Inc.
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