Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1989-04-03
1990-11-20
Steinberger, Brian S.
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
367163, 310337, H04R 1700
Patent
active
049723901
ABSTRACT:
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.
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Marshall et al., Advances in Flextensional Transducer Design Oceans, 1979, pp. 1-6.
Pagliorini, J. A., Small Wideband, Low-Frequency, High-Power Sound Source Utilizing Flextensional Concept., Oceans '78, pp. 1-6.
Woollett, R. S., Theory of Piezoplastric Flexual Disk Transducer w/Appli. to Underwater Sound, USL Research Report #490, 12/60 p. 1-76.
General Instrument Corp.
Steinberger Brian S.
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