Emergency underwater notification device

Details Emergency underwater notification device Emergency underwater notification device

2006-11-21

2009-11-03

Wong, Albert K (Department: 2612)

Communications: electrical

Underwater

C340S425100, C340S531000, C367S131000, C367S141000

Reexamination Certificate

active

07612686

ABSTRACT:
The emergency underwater notification device disclosed, one of which would be carried by each diver on a team of divers at a dive site, comprises (a) an activator; (b) one or more primary signal emitters, each of which emits a primary notification signal upon activation of the activator, the primary signal emitter comprising one or more of the following: a light source, a hydrophone, a siren, a speaker, or an acoustic transducer; (c) one or more secondary signal emitters, each of the secondary signal emitters emitting a secondary communication signal upon activation of the activator; (d) a receiver capable of receiving communication signals; (e) one or more tertiary signal emitters, each of the tertiary signal emitters to emit a tertiary communication signal upon receipt by the receiver of either a secondary communication signal or a tertiary communication signal from another notification device; and (f) one or more quaternary signal emitters, each of the quaternary signal emitters to emit a quaternary notification signal upon receipt by the receiver of either a secondary communication signal or a tertiary communication signal from another notification device, the quaternary signal emitter comprising one or more of the following: a light source, a hydrophone, a siren, a speaker, or an acoustic transducer.

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patent: 7488294 (2009-02-01), Torch
patent: 2002/0176323 (2002-11-01), Magine et al.

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