Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Patent
1986-10-16
1988-07-19
Kyle, Deborah L.
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
181286, 181288, 181290, 367 1, 367171, H04R 1700
Patent
active
047590009
ABSTRACT:
An acoustic energy absorbing baffle comprising a fluid containment means having an acoustic window means, a viscous fluid contained within said fluid containment, a porous material comprising strands of wire and being immersed within said viscous fluid means, a compliant mass means and means for holding said compliant mass means in close proximity of said porous material means such that the motion of said compliant mass means is imparted to said porous material. Incident acoustical energy is transmitted through the acoustic window and translated into energy absorbing motion of the porous material by acoustical excitation of the compliant mass means.
REFERENCES:
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patent: 4179627 (1979-12-01), Reitz
patent: 4353768 (1982-10-01), Goodman
patent: 4399526 (1983-08-01), Eynck
patent: 4439497 (1984-03-01), DiFoggio
patent: 4450544 (1984-05-01), Denaro et al.
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Kyle Deborah L.
Steinberger Brian
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