Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1993-01-07
1994-11-08
Eldred, J. Woodrow
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
367159, 367174, 310337, H04R 1700
Patent
active
053633466
ABSTRACT:
A flextensional transducer includes a stack of driving elements disposed ng a linear axis to convert a driving power into vibrational energy. End pieces, disposed at each end of the stack, have outwardly facing arcuate surfaces. A flexural shell, formed into a loop, is disposed to circumscribe the stack and the end pieces to present an elliptical cross-section with the major axis thereof being generally coincident with the stack's linear axis. The shell is reactively coupled to the end pieces at the outwardly facing arcuate surfaces. A pliant assembly is positioned between each end piece and the flexural shell for maintaining conformal engagement between portions of the end pieces and the flexural shell. The pliant assembly is designer such that its stiffness may be adjusted.
REFERENCES:
patent: 4845687 (1989-01-01), Bromfield
patent: 4964106 (1990-10-01), Bromfield
Eldred J. Woodrow
Fendelman Harvey
Keough Thomas Glenn
The United States of America as represented by the Secretary of
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