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Location signalling device for automatically placing a radio distress call

  • US 5,193,215 A
  • Filed: 01/25/1990
  • Issued: 03/09/1993
  • Est. Priority Date: 01/25/1990
  • Status: Expired due to Fees
First Claim
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1. A location signalling device for use in combination with a coordinate location data generating unit and a radio transmitter having a transmitter input, comprising:

  • a device input/output port for communicating with the coordinate location data generating unit and entering location data provided from the coordinate location data generating unit into the location signalling device;

    a memory for storing the entered coordinate location data;

    a timer/clock having periodic time setting means for setting predetermined periodic time intervals for entering coordinate location data;

    a device controller coupled to said device input/output port, said timer/clock, and said memory, including a microprocessor having programmed location data updating means for automatically communicating with the coordinate location at a generating unit to provide current coordinate location data at the predetermined periodic time intervals set by said timer/clock and storing current location data entries in said memory in order as to time of entry;

    a device output including an output terminal connected to the transmitter input of the radio transmitter for automatically retrieving a most current entry of the location data stored in memory and sending said most current location data to the input of the radio transmitter in response to a distress activation signal; and

    activation means for providing the activation signal to said device output means in response to an actuating action by a user when a distress call is to be sent.

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