Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Reexamination Certificate
2006-07-05
2009-06-16
Pihulic, Dan (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
Reexamination Certificate
active
07548489
ABSTRACT:
Each of a pair of electrically conductive spiral coils is ensconced in a disk-shaped matrix. The two coil-ensconced matrices are joined face-to-face so as to sandwich between them a thin, non-magnetic elastic layer. An electronic device is connected so that each coil and a corresponding capacitor form an LC circuit. Electrification of the two LC circuits results in the departing and returning, in oscillatory fashion, of the two coil-ensconced matrices. This resonant behavior is both electromagnetic and mechanical in nature. The intermittent electromagnetic repelling is related to the LC circuitry and the oppositely polar electrifications of the respective coils. The springy mechanical activity is based on a spring-mass model and involves the elasticity of the intermediate material and the entrainment of ambient fluid. Underwater acoustic projection performance can be predicted by inputting design parameters in an algorithm inter-relating voltage input, electromagnetic behavior, mechanical behavior, and acoustic energy field output.
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U.S. Appl. No. 11/481,231, filed Jul. 5, 2006, title “Resonant Acoustic Projector,” joint inventors Joseph A. Clark and Jane A. Young.
Clark Joseph A.
Young Jane A.
Kaiser Howard
Pihulic Dan
The United States of America as represented by the Secretary of
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