Communications: electrical – Watercraft alarm or indicating systems
Reexamination Certificate
2009-02-20
2010-11-23
Mullen, Thomas J (Department: 2612)
Communications: electrical
Watercraft alarm or indicating systems
C367S151000
Reexamination Certificate
active
07839305
ABSTRACT:
An underwater vehicle, such as a submarine or a swimmer/diver, can be detected by seeding a volume of water with neutrally buoyant, acoustically reflective sensors. The sensors comprise a sonar reflective coating and an adhesive so that they stick to and mark said vehicle when said vehicle or swimmer/diver passes through said volume of water. A sonar detector scans the water to identify the presence of said vehicle or swimmer/diver by observing acoustic reflections from the sensors adhering to the vehicle or swimmer/diver.
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Mullen Thomas J
Nowotarski Mark S.
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