×

Child proximity monitor and alarm

  • US 5,939,988 A
  • Filed: 07/31/1998
  • Issued: 08/17/1999
  • Est. Priority Date: 07/31/1998
  • Status: Expired due to Fees
First Claim
Patent Images

1. A child proximity sensor and alarm system comprising:

  • a monitoring unit comprising;

    means for transmitting a monitoring signal;

    means for selectively altering a distance over which the monitoring signal is transmitted by the transmitting means;

    means for receiving a response signal;

    an alarm that is activated when the response signal receiving means does not receive the response signal; and

    means for emitting a deactivation signal; and

    an article adapted to be worn by a child, the article comprising;

    means for receiving the monitoring signal from the monitoring unit;

    means for transmitting the response signal to the monitoring unit, transmission of the response signal by the response signal transmitting means being dependent on whether the monitoring signal is detected by the monitoring signal receiving means;

    an alarm that sounds when the monitoring signal receiving means does not receive the monitoring signal;

    means for receiving the deactivation signal from the monitoring unit; and

    means for deactivating the alarm of the article when the deactivation signal receiving means receives the deactivation signal from the monitoring unit.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×