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Automated fail-safe sea rescue flotation system

  • US 6,439,941 B2
  • Filed: 04/05/2001
  • Issued: 08/27/2002
  • Est. Priority Date: 11/15/1999
  • Status: Expired due to Fees
First Claim
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1. A sea rescue apparatus, comprising:

  • a personal flotation device (PFD);

    a hydrostatic pressure sensor mounted on said PFD;

    a global positioning system (GPS) receiver mounted on said PFD;

    a radio transmitter mounted on said PFD; and

    a controller connected to said hydrostatic pressure sensor, said GPS receiver, and said radio transmitter;

    wherein said controller is programmed to transmit location data via said radio transmitter only when said controller detects a hydrostatic pressure signal having at least a selected magnitude for at least a selected duration.

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