Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Reexamination Certificate
2006-12-12
2006-12-12
Pihulic, Dan (Department: 3662)
Communications, electrical: acoustic wave systems and devices
Signal transducers
Underwater type
C367S131000
Reexamination Certificate
active
07149150
ABSTRACT:
A plurality of sensing modules are deployed by positioning thereof in spaced relation to each other on a seafloor surface at a shallow depth to establish a targeted seawater zone within which certain conditions are detected, such as those produced by the presence of a sea vessel such as a submarine within the targeted zone. Data signals are generated within the deployed sensing modules in response to said detection of the submarine for radio frequency transmission above the seawater targeted zone from floating transmitters ejected from the sensing modules positioned on the seafloor surface after detection of the submarine.
REFERENCES:
patent: 5224074 (1993-06-01), Sullivan
patent: 6765487 (2004-07-01), Holmes et al.
Holmes John J.
O'Keefe Edward C.
Scarzello John F.
Wingo Robert A.
Pihulic Dan
Shuster Jacob
The United States of America as represented by the Secretary of
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