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Wet diaper detector

  • US 5,266,928 A
  • Filed: 05/29/1992
  • Issued: 11/30/1993
  • Est. Priority Date: 05/29/1992
  • Status: Expired due to Term
First Claim
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1. An apparatus for use with a diaper to detect the occurrence of a wet condition in the diaper and produce an alarm signal in response to such detection, said apparatus comprising:

  • an elongated strip of substantially insulative material sized and configured to be secured within a diaper with a portion of said elongated strip located in a region of the diaper subject to wetness and with an end of said elongated strip protruding from the inside of the diaper;

    a pair of spaced electrical conductors on said elongated strip of material, said conductors extending along the length and terminating at said protruding end of said elongated strip;

    a detector and alarm assembly having a pair of conductive contacts, means for monitoring the electrical resistance between said pair of conductive contacts, and means for producing an alarm signal when the monitored electrical resistance falls below a pre-established value;

    said detector and alarm assembly being configured to be releasably coupled to the protruding end portion of said elongated strip with each of said conductive contacts of said assembly engaging and making electrical contact with a corresponding one of said spaced electrical conductors on said elongated strip;

    means for releasably fastening said apparatus to a diaper with which said apparatus is to be used; and

    said means for releasably fastening said apparatus to a diaper comprising an elongated flap on the protruding end of and extending transversely with respect to said elongated strip, said flap being sized and configured to fold over said detector and alarm assembly when said assembly is coupled to the protruding end of said strip, said flap being provided with adhesive means for securing said flap, when folded, to a diaper on either side of said detector and alarm assembly to capture said assembly securely between said flap and the diaper thereby hold the assembly firmly but releasably in place on the diaper;

    whereby the electrical resistance between the pair of spaced conductors is monitored and an alarm signal produced when wetness within the diaper bridges the spaced conductors on the elongated strip causing the resistance therebetween to fall below the pre-established value.

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