Water-activated emergency radio beacon

Details Water-activated emergency radio beacon Water-activated emergency radio beacon

1996-09-17

1998-01-20

Eisenzopf, Reinhard J.

Telecommunications

Transmitter

Mobile or portable

455128, 200 6105, 441 89, 340573, 340539, H04B 1034

Patent

active

057109893

ABSTRACT:
An emergency position indicating radio beacon, sized for mounting on a life vest or the like, that includes a water-activated switch that automatically activates the transmitter when the water-activated switch is mounted in water. The water-activated switching circuitry includes an insulated electrical paddle that separates the exposed electrical contacts a predetermined distance to insure that the device will not be inadvertently activated by moisture, but that it must be immersed in water for proper contact. The system also includes a memory circuit and power amplification.

REFERENCES:
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patent: 4408193 (1983-10-01), Millen et al.
patent: 4638291 (1987-01-01), Puscasu
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patent: 4714914 (1987-12-01), Boe
patent: 4843305 (1989-06-01), Akiloa
patent: 5008650 (1991-04-01), Hoiberg
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patent: 5059952 (1991-10-01), Wen
patent: 5130708 (1992-07-01), Boyden
patent: 5193215 (1993-03-01), Olmer
patent: 5274359 (1993-12-01), Adams
patent: 5311100 (1994-05-01), Brain
patent: 5326297 (1994-07-01), Loughlin

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