Sealed Acoustical Element Using Conductive Epoxy.
Patent, Filed 28 May 92, patented 30 Mar 93,
DEPARTMENT OF THE NAVY WASHINGTON DC
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A radially-polarized piezoelectric cylindrical transducer is provided. The transducer has an electrically conductive end cap affixed with a conductive epoxy to one end of a piezoelectric body and a second cap affixed to the other end. The piezoelectric body comprises a layer of piezoelectric material located between an inner and an outer electrode. The outer electrode has an electrode gap which electrically insulates the end cap from the outer electrode. The unit is electrically conductive and permits the attachment of two electrical leads to its exterior, one to the first end cap and the other to the outer electrode of the piezoelectric body
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