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Alarm clock

  • US 5,666,331 A
  • Filed: 09/20/1994
  • Issued: 09/09/1997
  • Est. Priority Date: 09/20/1994
  • Status: Expired due to Term
First Claim
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1. An alarm clock connectible to electrical A.C. power lines, the alarm clock comprising:

  • a housing;

    display means, mounted in the housing, for displaying time of day and preset alarm time information;

    clock means, mounted in the housing, for generating and supplying time of day information to the display means, and for generating an alarm signal when the time of day corresponds to a preset alarm time;

    means, mounted on the housing and input to the clock means, for setting time of day and alarm time information and for de-energizing the alarm signal;

    a first electrical outlet, mounted in the housing, for supplying electrical power to a first external electrically operated device electrically connectible to the first outlet;

    receiver means, mounted in the housing, for receiving and detecting power line carrier signals transmitted on the electrical A.C. power lines to the alarm clock from a to more device in response to the occurrence of an input stimuli detected by the remote device; and

    means, responsive to the clock means and the receiver means, for applying electrical power to the first outlet at one alternatingly on and off frequency in response to the generation of the alarm signal and at another distinct on and off sequence in response to the detection of the power line carrier signals by the receiver means.

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