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Emergency call device for vehicles

  • US 6,618,657 B1
  • Filed: 02/14/2002
  • Issued: 09/09/2003
  • Est. Priority Date: 04/16/1999
  • Status: Expired due to Fees
First Claim
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1. An emergency call device for a vehicle, the vehicle including a sensor, comprising:

  • a transmitter configured to transmit a first message when the sensor detects a critical driving situation prior to an accident by comparing a signal from the sensor to a threshold value, the sensor detecting at least a braking operation, the first message containing at least a geographical location of the vehicle, the transmitter further configured to transmit a second message after a conclusion of a preselected time span after the first message is transmitted, the second message one of declaring the first message to be invalid in the event that the sensor did not detect the accident within the preselected time span, and containing further information suitable for initiating emergency measures in a case of an actual detected accident.

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