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The underwater sound projector includes a hollow-cylindrical metal housing having a recess with an opening. A non-ceramic flexural disc is supported over the opening. Within the recess is a stack of piezoelectric ring elements. A metal drive head transfers force axially from the stack to an annular

The underwater sound projector includes a hollow-cylindrical metal housing having a recess with an opening. A non-ceramic flexural disc is supported over the opening. Within the recess is a stack of piezoelectric ring elements. A metal drive head transfers force axially from the stack to an annular area on the disc spaced from the center thereof. Foil electrodes are interposed between the piezoelectric rings and situated at the ends of the stack. A stress bolt clamp connects the drive head to the housing with the stack situated therebetween.

대표청구항 ▼

An underwater sound transducer comprising a housing having a recess with an opening defined by the edge of the housing, non-ceramic flexural disc means situated over said opening and supported by said edge of said housing, piezoelectric means situated within said housing, drive means interposed betw

An underwater sound transducer comprising a housing having a recess with an opening defined by the edge of the housing, non-ceramic flexural disc means situated over said opening and supported by said edge of said housing, piezoelectric means situated within said housing, drive means interposed between and operably connecting said piezoelectric means and said disc means, said drive means comprising a substantially cylindrical drive ring and an annular drive element, said annular drive element being interposed between said drive ring and said flexural disc.